WO2018104413A1

WO2018104413A1 - Pressurised water valve

Info

Publication number: WO2018104413A1
Application number: PCT/EP2017/081757
Authority: WO
Inventors: Frantisek PANCURAK
Original assignee: Swiss Aqua Technologies Ag
Priority date: 2016-12-06
Filing date: 2017-12-06
Publication date: 2018-06-14
Also published as: CN110139964A; WO2018104411A2; EP3551808B1; US20190330831A1; EP3551808A1; WO2018104411A3

Abstract

The invention relates to a pressurised water valve (10) for a WC system, the pressurised water valve comprising: a valve housing (9) having an inlet port (20) and an outlet port (22) and, provided therebetween a valve seat (12) and a valve body (14), an actuating device by means of which the valve body (14) can be released from the valve seat (12), and a return device which moves the valve body (14) back onto the valve seat (12); and, in the travel direction of the valve body (14), a cover port (25) having a cover chamber (34), wherein the cover chamber (34) is fluidically connected to the inlet port (20) only by means of connecting grooves (36); a valve port (24) which extends in the same direction as the outlet port (22) and which is axially shorter than the outlet port (22), wherein the outlet port (22) and the valve port (24) radially enclose an annular cavity which forms a ventilation duct (82) which is fluidically connected, in the region of the cover port (25), to ventilation openings (80).

Description

Water pressure valve

The present invention relates to a pressure water valve (also called pressure purging valve) for a toilet system, in particular a toilet system with a pressurized water ^¬ flushing system, which is in flow communication with a toilet bowl and a Druckwasserspülsystem for a pressurized water flushing system with such a pressure water valve. The desire to use as little water in toilet facilities, has led to a toilet facilities, which have a selector, by means of which can be selected between different amounts of water for rinsing. Such a rinsing system is disclosed, for example, in WO 2010/030264 Al. On the other hand, the desire to save water in toilet flushing, too

Pressure water rinsing system out in which a higher water pressure during rinsing ensures that with a generally smaller amount of water an equally good or even better rinsing is achieved in comparison with conventional rinsing systems. A combination of one

Druckwasserspülsystem and a purging device with freedom of choice between two different amounts of water is known in EP 1 537 277 Bl.

For a better understanding of the basic principle, a toilet installation 2000 with a pressurized water flushing system 2002 is shown by way of example and purely schematically in FIG. A pressurized water tank 2004 of the Druckwasserspülsystems 2002 is connected via a connecting line 2020 with a pressure water valve 2010. For the flushing process, the pressure water valve 2010 is actuated, whereby a predefined volume of water is pressurized as Rinse water from the pressurized water tank 2004 through the open valve 2010 and a downstream of the valve adjoining drain line 2022 in a toilet bowl 2006 is passed. The predefined water volume has a predefined first pressure D 1 (indicated by the arrow D 1), which is greater than the water pressure D 2 (see arrow D 2) under an air atmosphere. such

Pressure water rinsing systems 2002 generally operate on the principle of a hydraulic accumulator. Through a siphon in 2012, a first part of the flushing water flows from the toilet bowl 2006 as wastewater into the sewer line 2008 and further into the sewer (not shown). In contrast, a part of the rinsing water that has flowed in later will remain in the siphon in 2012, whereby the sewer line 2008 will be closed off odor-tight against the WC basin in 2006. The pressurized water tank 2004 is refilled after flushing by nachfliesendes water from the local water supply system via the local water supply ^¬ line 2014 (also known as drinking water pipe 2014). Depending on the system can optionally be provided between the local water supply line 2014 and the pressurized water flushing system 2002 of the toilet system 2000, a valve 2018 or check valve, etc. For WC systems including pressurized water flushing systems for WC systems, the requirements of standard EN 1717 and similar standards in many countries outside Europe must be taken into account, at least in most European countries. From WO 2016/163959 A2 an example of a pressurized water flushing system is known which complies with the standard EN 1717 and which is provided with a pressurized water tank, a hydraulic accumulator separated therefrom and a corresponding pressure flushing valve. The pressure flush valve separates doing the pressure water tank from the drain line, which leads to the toilet bowl, and is opened for rinsing.

Druckwasserspülsysteme the type described above for toilet facilities have long been known and, accordingly, also pressure flush valves for such Druckwasserspülsysteme. As with any valve, there is also a valve seat and a valve body which can be placed therefor, as well as an actuating device by means of which the valve can be actuated and the valve body is detachable from the valve seat in the case of these pressure water valves. Valve seat and valve body are configured and arranged between a pressurized water tank 2004 and a connecting line 2020 and a drain line 2022 (see Fig. 1) that by pressing the Druckspülventils 2010 a defined volume of water for rinsing from the pressurized water tank 2004 of Druckwasserspülsystems 2000 in the WC basin 2006 is flowing. In general, the pressure water valve on a return device, which ensures that the valve body after a certain period of time again sealingly seated on the valve seat and the valve is therefore closed again after this certain period of time. Often, an adjustment element is present, by means of which the volume of water is adjustable, which flows in a flushing process in the toilet bowl.

As already mentioned above, in most countries there are standards such as DIN EN 1717, which contains provisions for keeping drinking water clean. Such regulations stipulate that wherever there is a flow connection between service water / waste water and drinking water pipes - or could occur in the event of an accident - the drinking water is prevented from becoming contaminated by backflow Industrial water / wastewater must be protected. Backflow / ingestion of the process water in the direction of the drinking water pipe can occur, for example, if there is a higher pressure in a device than in the drinking water line (= negative pressure in the drinking water line in relation to the pressure in the device) or if the pressure in the drinking water system sinks, because, for example, in a lower floor, a valve with a large flow is opened, for example, the purge of a urinalysis. Underpressure in the drinking water supply line and a corresponding RückfHessen / sucking in the service water may also occur due to a pipe break or when in a closed line section in a water supply system, a valve is opened at a lower point, as in repair work on a domestic water mains installations again occurs.

The present invention provides a pressure flushing valve for a toilet water system described above for a toilet facility, which reliably prevents backwashing of the process water into the drinking water pipe.

Optionally, this pressure flush valve is supplemented with a selection device, which allows the choice between different amounts of water for rinsing.

An inventive pressure water valve comprises a

Valve body with an inlet port and an outlet port; a valve seat and a valve body, which are arranged between the inlet nozzle and the outlet, that by actuation of the valve a defined volume of water for flushing through the outlet port into a toilet bowl is conductive; an actuator by means of which the valve is operable and the valve body is detachable from the valve seat; a back device that moves the valve body back onto the valve seat; and in the stroke direction of the valve body, a cover nozzle with a cover chamber arranged above the valve body, the cover chamber being fluidly connected to the inlet nozzle only by means of connecting grooves. The grooves allow the flow of pressurized water into the space above the valve body. Furthermore, a valve stub is provided which extends in the same direction as the outlet and which is axially shorter than the outlet, wherein outlet and valve stems radially enclose an annular cavity which forms a ventilation duct, wherein the ventilation duct in the region of the cap with ventilation openings is in flow communication. The one related to the vents

Ventilation duct provides at negative pressure in the Druckwasserbzw. Drinking water pipe that air is sucked in from the environment, so that no wastewater can be sucked in from the direction of the toilet bowl, so that the standard EN 1717 is met. The lid chamber is fluidically connected to the outlet port and / or the valve stub, wherein by means of the actuating device opening this connection and by means of at least a part of the rear part means a closure of this connection is possible. In the following, the terms outlet nozzle and outlet nozzle are used synonymously for each other. In a specific embodiment, an adjusting element, which is preferably designed as an adjusting screw, allows the adjustment of the water volume, which can be conducted for flushing into the toilet bowl.

In a further embodiment, the valve neck has a smaller diameter than the outlet nozzle and opens into the drainage nozzle, with valve nozzle and drainage nozzle preferably being arranged concentrically. This is an advantageous construction when the pressurized water tank of Druckwasserspülsystems for a toilet system is connected via a connecting line to the inlet port of the pressure water valve. In another embodiment of the pressure water valve, the valve stub has a larger diameter than the outlet stub and surrounds the drainage nozzle, wherein the outlet stub protrudes beyond the valve stub in the outflow direction and wherein the valve stub and outflow stubs are preferably arranged concentrically. This is an advantageous construction when the pressurized water tank of Druckwasserspülsystems for a toilet system is connected directly to the inlet port of the pressure water valve or even passes into this.

In an embodiment of the pressure water valve that is particularly easy to produce, the valve housing is formed in one piece and is in particular integrally formed with the inlet nozzle, the cap nozzle, the valve nozzle and the outlet nozzle, wherein the valve housing is designed in particular as a casting or injection molded part. In a special embodiment of the pressure water valve, the valve body is substantially hollow and its at least one cavity communicates fluidically with the lid chamber, wherein the at least one cavity has a central opening in the direction of the outlet nozzle, and wherein valve-like closing and opening by means of a valve stem the centric opening is possible. In a further development of this pressure water valve, the valve stem has a plunger head which closes off the central opening and from which a plunger protrudes, which has a smaller diameter than the plunger head, wherein the plunger and, with it, the plunger head can be tilted out of its rest position by means of the actuating device.

In a variant of the pressure water valve described in the above paragraph, the plunger is so from the plunger head that it protrudes through the central opening of the cavity in the direction of Abflussstutzens, the plunger is tilted by means of a stamp belonging to an actuator from its rest position and the valve housing a housing extension that receives the actuator.

In another variant of this pressure water valve, the plunger protrudes from the plunger head so that it projects into the lid chamber and can be actuated by means of a pressure lever, wherein the pressure lever belongs to an actuating device which can be operated from the side of the lid chamber above the valve body. In a further embodiment of the pressure water valve, the lid space communicates fluidically with at least one, preferably with two, but possibly also with more than two flooding chambers of an actuating device. In this case, each of the at least one flooding chambers on its opposite side of the lid space with a water outlet in flow communication, wherein the connection between the respective flooding chamber and the water outlet is provided with a trigger that can be operated from the outside and in the connection between the respective flooding chamber and extends into the water outlet and there allows a valve-like closure and opening of this fluidic connection, wherein opening this connection also allows a drainage of the water from the lid chamber. More than two flooding rooms can make sense if, for example, more than two different amounts of water are to be made available for rinsing. As a rule, however, two flooding chambers will be provided.

In a further development of the pressure water valve at least two flooding chambers are provided in which control bodies are linearly movable in a piston-like manner, wherein the stroke h, h2 of the control body is einstallebar by means of adjusting screws, and wherein the stroke h, h2 of the control body also determines the volume of water that from the lid chamber escapes through the corresponding flooding chamber, whereby the stroke H of the valve body during the flushing process and thus the gap S are defined over the valve seat and the amount of flushing water during the flushing process. Advantageously, a return part device, in particular a return spring, is provided in each of the at least one flooding chambers, which moves the corresponding regulating body back into its starting position after the pressurized water has flowed out of the flooding chamber. Furthermore, in this embodiment, each of the at least one flooding chambers on its inner wall grooves or the associated control body has grooves, the grooves after rinsing allow a backflow of water from the lid space in the corresponding flooding chamber.

It is very easy and time-saving for the assembly, when each of the at least one flooding chambers together with their trigger belongs to an actuator, and all actuators are combined together with the water outlet in an assembly. Another advantage in terms of cost and manufacturability can be achieved if the at least one flooding chamber, the water outlet and the flow connection between the two are integrally formed and in particular as a casting or injection molded part.

In a variant of the pressure water valve, the assembly with the at least one actuating element is connected by screw directly to a lid of the pressure water valve, which closes the lid chamber on one side, wherein the screw connection includes a connecting channel, the

Flow connection between the at least one flooding chamber and the lid chamber realized. In another variant of the pressure water valve that is the assembly with the at least one actuating element connected by means of connecting line with a cover of the pressure water valve, which closes the lid chamber on one side, wherein the connecting line includes a connecting channel, which

Fluid connection between the at least one flooding chamber and the lid chamber realized. The realization of the flooding spaces contained actuators makes it possible

Re-adapt pressurized water flush valve with simple movements so that it can also be flushed with different flushing water volumes. An advantage of this embodiment is further that this only a pressurized water tank is needed while conventional pressurized water systems that want to provide different rinsing water volumes available, usually need a corresponding number of pressurized water tank.

The summary of the actuators with their flooding chambers in a single assembly makes the construction compact and installable in a few simple steps. Existing pressure water valves, in particular of the type described here, can also be converted or retrofitted with such modules to a pressurized water flushing system which makes available different amounts of water for flushing.

Particularly advantageous, because it is safe and easy in the sense of EN 1717, it is when the water outlet for a drain of the water with the outlet spigot or the Ventilstutzten is fluidly connected. Pressurized water flushing systems for a toilet installation comprising at least one pressurized water tank connectable upstream to a local pressurized water or drinking water line and communicating downstream with a pressurized water valve, further comprising a WC downstream from the pressurized water valve and in fluid communication therewith. Include basin, which is connected downstream of a sewer line are particularly advantageous equipped with a pressure water valve, which is designed according to the descriptions given above. As already mentioned, due to the compactness of the pressure water valve and its simple installation, it is also possible to retrofit existing pressurized water flushing systems for toilet installations. For this purpose, it is possible the pressurized water tank via a connecting line to the inlet port of

Pressure water valve to connect. The pressure water tank can thus be arranged at some distance to the pressure water valve. But it is also possible that the pressurized water tank of Druckwasserspülsystems is directly connected to the inlet port of the pressure water valve or passes into these.

Further embodiments and further developments of the invention are also described in the dependent claims. The pressure flushing valve according to the invention will be described below with reference to FIGS

Embodiments described in more detail. Like elements in the figures are identified by the same reference numerals. The purely schematic representations in the figures are not to scale. The explanations are given by way of example only and have no limiting effect. The figures show purely schematically: Fig.l a toilet system with a Druckwasserspülsystem according to the prior art;

2 shows a first embodiment of the inventive

Pressure flush valve from above;

3, the pressure flushing valve of FIG. 2 in closed

State in a section along the section line III-III in Figure 2, which further extends along a longitudinal axis of a valve body of the Druckspülventils.

4 shows the pressure flushing valve from FIG. 2 along the

Section line IV-IV in Figure 2 and also in a section along the longitudinal axis of the valve body.

FIG. 5 shows the pressure flushing valve from FIG. 2 or FIG. 3 along the section line V-V in FIG. 3 with a view from below of the valve body and an actuating device for the pressure flushing valve;

6 shows the pressure flushing valve from FIG. 2 or FIG. 3 along the section line VI - VI in FIG a perspective view obliquely from above on the trimmed actuator; the pressure flushing valve of Figure 2 and Figure 3 in the same sectional view as in Figure 3 but in the open state with water flow. 4 in the same sectional view as in Figure 4 but in the open state with water flow. the pressure flushing valve of FIG. 8 in the open state at negative pressure in the

Water supply line; in sectional view with section through

Valve body a variant actuating device; perspective obliquely from above a second embodiment of the inventive pressure flush valve with the possibility between two different amounts of water (here ^ and full rinsing water) to choose; 11 in section along the sectional plane XII-XII in Figure 11 and along a longitudinal axis of a valve body of the pressure flush valve and in the closed state.

Fig.13 the pressure flush valve of Fig. 11 in the same

Sectional view as in Fig. 12, but with the on the left in Figure 11 shown actuating unit for the smaller amount of water (here the ^ Spülwassermenge) is actuated and the valve is opened accordingly wide;

FIG. 14 shows the pressure-flushing valve from FIG. 11 in a section along the sectional plane XIV-XIV in FIG. 11 in the closed state;

Fig.15 the pressure flush valve of Fig. 11 in the same

Sectional view as in Figure 14, but with the full amount of water actuating unit shown on the right rear side of Figure 11 is actuated and the valve is correspondingly wide open. the pressure flushing valve of FIG. 11 with closed valve in

Section along the sectional plane XII-XII in Fig. 11

16 shows the pressure flushing valve of FIG. 11 in the same

Sectional view as in Figure 14, but with the small amount of water actuation unit (here rinse water quantity) shown left in the back of Figure 11 actuated and the valve is correspondingly wide open; and

Fig.17 in perspective from the outside a variant of

Pressure flushing valve of FIG. 11.

FIGS. 2 to 6 show a first embodiment of a pressure water valve 10 according to the invention in a closed position State shown. In the following, the structure of the pressure flush valve 10 will be described with reference to these figures.

As can be seen from the figures, the pressure water valve 10 has a valve housing 9, which comprises an inlet connection 20 with an axis 2, a housing extension 7 and approximately perpendicular to the inlet connection 20 a cover connection 25. In the area of the cover stub 25 9 ventilation openings 80 are provided in the valve housing. In addition, the housing 9 in extension of the cap connector 25 and the cap nozzle 25 with respect to the axis 2 opposite a drain port 22, with dachshound 25 and drain ports 22 are concentric in this example - but this does not necessarily have to be - and define a valve longitudinal axis 1. The valve housing 9 is preferably integrally formed as shown in this example.

The inlet port 20 is provided for the connection of a connecting line 2020 (see Figure 1) to a pressurized water tank 2004 (Figure 1). The outlet connection 22, is intended to be connected to the drainage pipe 2022 (FIG. 1) for the WC basin 2006. The axis 2 of the inlet nozzle 20 is in the example shown here approximately perpendicular to the valve longitudinal axis 1 and meets this in a cavity of the valve housing 9, which separates the inlet nozzle 20, the cap nozzle 25 and the outlet nozzle 22 from each other or in which they meet , And, in which - in the assembled state - essential parts of a valve body 14 are arranged. The housing extension 7 is in this example with respect to the valve longitudinal axis 1 of the inlet nozzle opposite but arranged axially offset in the direction of the discharge nozzle 22. But it could also be arranged instead of 180 ° to the inlet nozzle at an angle between 45 ° and 315 °. It has a housing opening 15 and serves to receive an actuating device 16. In the example shown here, the actuating device 16 is provided with a push button 18 'designed as a trigger 18, which merges into a stamp 19. The punch 19 is guided by the housing opening 15 from the outside into the interior of the housing 9 and stored in the housing extension 7 in a bearing element 17. In the bearing member 17, a return spring 27 is arranged, which after actuation of the trigger 18 - so in this case after pressing the push button 18 ', - provides for a return of the trigger 18 / push button 18' and its associated punch 19 in the starting position , By means of a closure element 29, the housing opening 15 is closed from the outside, wherein the closure element 29 has a passage opening through which the trigger 18 / push button 18 'is guided to the outside. Inwardly against the water-conducting elements of the valve 10, the actuator 16 and the housing opening 15 is sealed by a sealing membrane 26. After assembly, the closure member 29 together with the bearing member 17 ensures that all components 18/18 ', 19, 26, 27 of the actuator 16 are fixed in the pressure purging valve 10 at their respective place and with their intended movement options.

The lid nozzle 25 is provided with an internal thread, so that a valve cover 8 can be screwed. Of the Valve cover 8 has an upper cover part 30, from the outer edge perpendicularly protrudes a cover cylinder 32 with external thread, so that the valve cover 8 by means of the cover cylinder 32 in the cover stub 25 of the valve housing 9 can be screwed. The upper cover part 30 of the valve cover 8 encloses, together with the cover cylinder 32, a cover chamber 34 which is open on the side opposite the upper cover part 30. On the inside of the lid cylinder 32 connecting grooves 36 are provided. When the valve is fully assembled, the lid chamber 34 is in fluid communication with the water-carrying inlet nozzle 20 only via these grooves 36 and can only be filled with water via these grooves 36.

It would also be conceivable, of course, that the cover cylinder 32 with internal thread and the cover piece 25 of the valve housing 9 has an external thread - that is, conversely to the example shown - and thus screwed onto the cover socket 25 (instead of screwed) would be. Accordingly, the lid would be provided with ventilation openings and the inside of the lid nozzle would form together with the top cover the lid chamber. Accordingly, grooves would be provided on the inside of the cap neck to hold the cap chamber in fluid communication with the water-carrying inlet port.

In the embodiment shown here, an opening is provided centrally in the upper lid part 30, which merges into a receiving cylinder 38 with internal thread (FIGS. 3 and 4), the receiving cylinder 38 projecting in the same direction from the upper lid part 30 as the lid cylinder 32 Receiving cylinder 38 is a screw 28 'screwed in the example shown here as Adjusting element 28 for adjusting the flushing volume of the valve 10 is used. Instead of an adjusting screw 28 ', other embodiments are also conceivable here, such as, for example, an adjusting pin which can be fixed by means of clips and the like more.

When the valve 10 is opened, the adjusting screw 28 'screwed into the cover 8 cooperates with a valve body 14 of the pressure water valve 10 and limits a stroke H (see FIGS. 7 and 8) of the valve body 14. A lid spring 56, which in this example is a spiral spring is formed, is attached to the protruding from the lid top 30 receiving cylinder 38 and extends between the inside of the lid top 30 and the valve body 14. Depending on how far the adjusting screw 28 'is screwed into the receiving cylinder 38 of the lid 8, the stroke H is shorter or longer, and thus a gap S, which is released between the valve body 14 and valve seat 12 is larger or smaller and correspondingly the flushing water volume, which can flow through the valve 10 is larger or smaller (see below).

The housing 9 has, as a further element, a valve stub 24 which is arranged concentrically with the outlet stub 22 and inside it. The concentric axes of outlet spigot 22 and valve spigot 24 coincide in this example concentrically with the valve longitudinal axis 1. This concentric design offers advantages in the production; in other variants, the axes of abflussstut zen and valve stub but offset from each other, which works just as well. Between the valve stub 24 and outlet nozzle 22 is an annular cavity which forms a ventilation channel 82. This ventilation channel 82 extends axially from the end of the valve stub 24 into the cap socket 25 and is in flow communication with the ventilation openings 80. The ventilation channel 82 surrounds the cavity which separates the cap stub 25 from the outlet stub 22 and in which the valve body 14 or 14 at least substantial parts of the valve body 14 are arranged. Excluded are only those areas surrounding the cavity in which on the one hand, the inlet nozzle 20 is connected to the cavity and on the other hand, the hollow housing extension 7 extends with its opening 15 to the valve stub 24. The opening 15 creates a connection from the interior of the valve stub 24 through the hollow housing extension 7 to the outside.

As already mentioned, the ventilation channel 82 extends from the free end of the valve stub 24 to the cap stub 25 and merges into the ventilation openings 80 in the area of the cap stub 25. The screwed into the cover pipe 25 cover cylinder 32 of the valve cover 8 is surrounded in this example of the ventilation duct 80 and the ventilation openings 82 in the cover pipe. As already mentioned above, it would be conceivable for a screw-on valve cover 8, screwed in instead of being screwed in, that the valve cover has 8 ventilation openings and the ventilation channel is in fluid communication therewith.

Where drain port 22 and valve port 24 meet the above-mentioned cavity (the cavity of the valve housing 9, which receives the valve body 14 and in the inlet port 22, drain port 22 and cap connector 25 meet), drain port 22 and valve stub 24 are radially connected to each other in such a fluid-tight manner that the cavity forms only a fluidic connection between inlet port 20 and valve stub 24, but not a direct fluid connection between inlet port 20 and Outflow 22 exists. This means that all water which is to flow from the inlet connection 20 into the outlet connection 22 and further into the outlet connection 2020 and into the toilet basin 2006 must flow through the said cavity and the valve connection 24 into the outlet connection 22. There is no direct way from the inlet nozzle 20 into the outlet 22 for the water.

In the embodiment of the pressure flushing valve 10 shown here, in the region of the free end of the valve stub 24, which projects into the outlet stub 22, a flow control mechanism 70 with a holder 72, with the aid of which a control element 74 can be placed in the ventilation channel 82, can be placed in the ventilation channel 82 is. The holder 72 is formed in this example in the form of an insertable into the ventilation channel 82 and there fixable grid 72 '. In this example, a membrane 74 'is fixed in or on the grid 72' as a control element 74, the membrane 74 'allowing air to pass through from the ventilation openings 80 and the ventilation channel 82 into the outlet connection 22 (see arrows 3000, 3001, 3002, 3003) in Figs. 3, 4, 7 to 9), but water from the direction of the outlet spigot 22 does not pass in the direction of the ventilation openings 80 into the ventilation channel 82 (see arrows 1003, 1004 in Figs. 7 and 8). Instead of the membrane 74 'is also a corresponding sealing mechanism conceivable, which would of course be fixed with a correspondingly adapted to the mechanism holder in the ventilation channel 82. The valve stub 24 has on its side facing the cap nozzle 25 a valve seat 12 for a multi-component valve body 14. Valve seat 12 and valve body 14 are matched in cross section and in their diameter. In the simplest form, the cross section is circular, but also polygonal shapes are conceivable. In the example shown here, the valve body 14 is substantially cylindrical and, as stated, composed of several components. The valve seat 12 is also cylindrical and optionally has a sealing element 12 ', as indicated in the figures.

The valve body 14 has a lower valve part 40 and an upper valve part 60, both of which are hollow and, in this particular example, of wood-cylindrical design. In the assembled state and when the valve is closed, a first end portion of the lower valve member 40 is in the valve stub 24, while an opposite second end portion of the lower valve member 40 protrudes toward the cap nozzle 25 from the valve stub 24 and the valve seat 12. The outer diameter of the lower end region of the lower valve part 40 is selected such that it can be placed axially movably in the valve stub 24 (if necessary, even if the valve stub 24 / valve seat 12 has a sealing element 12 '). The length of the first end portion of the lower valve member 40 is selected according to a predetermined maximum linear stroke H in the direction of the valve longitudinal axis 1 so that it is in the valve stub 24 with maximum stroke H linear in the axial direction 1 is movable without being moved out of the valve stub 24 out.

In its first end region, the lower valve part 40 has a cylinder bottom 42 with a central opening 44, wherein a sealing ring 43 rests on the inside of the cylinder bottom and around the central opening. The opposite, second end portion of the lower valve member 40 has an internal thread and an external thread. In the internal thread a hollow cylindrical cap 52 is screwed with cap lid 53. The cap 52 with cap lid 53 and the cylinder bottom 42 of the lower valve member 40 at most together with a part of the inner wall of the hollow cylindrical lower valve member 40 form a valve chamber 50th

On the external thread of the second end portion of the lower valve member 40 of the likewise substantially hollow cylindrical and open at its two axial ends, upper valve member 60 is screwed. The wooden cylinder of the upper valve member 60 together with the cap lid 53 of the screwed lower valve member 40 has an upwardly open cavity 35, wherein the valve cap 52 and / or at least the cap lid 53 openings (not shown), so that the valve chamber 50 via these openings fluidly connected to the cavity 35 of the screwed, upper valve member 60.

In the valve chamber 50, a valve stem 46 is mounted with its plate-shaped plunger head 47. A plunger 48 of the valve stem 46 is perpendicular from the plate-like plunger head 47 and with its opposite the plate-like plunger head 47 smaller diameter the central opening 44 in the cylinder bottom 42 out of the valve chamber 50 to the outside. In this embodiment, therefore, the plunger 48 of the valve stem 46 projects concentrically with the valve longitudinal axis 1 out of the valve chamber 50 in the direction of the outlet nozzle 22 into the valve stub 24 in the assembled state, but this does not necessarily have to be the case; Even with an axially displaced ram works the here presented pressure water valve. The plate-like plunger head 47 is centrally provided on the side opposite the plunger 48 with a cylindrical, axially extending projection which serves as an inner guide for a valve disposed in the valve 50 coil spring 54. A provided between plunger 48 and projection and radially beyond the axial projection protruding sealing edge of the plunger head 47 is on the one hand similar to a sealing plate sealingly on the sealing ring 43 and thus indirectly on the cylinder base 42. On the other hand, the sealing edge of the plunger head 47 serves as a bearing for the arranged in the valve chamber 50 and by the cylindrical, axial projection of the plunger head 47 inside guided coil spring 54. On the opposite side of the plunger head 47 of the valve chamber 50, the coil spring 54 is screwed to the cap lid 53 of Cap 52 counterposed.

The upper valve member 60 is screwed onto the lower valve member 40 so as to partially axially surround the lower valve member 40 with its first end portion. In this first end region of the upper valve part 60, which surrounds the lower valve part 40, a first radially outwardly projecting flange is provided for receiving a first annular sealing element 62. This first sealing element 62 is provided to cooperate with the valve seat 12 of the valve stub 24. The lower, first flange forms a lower valve edge 68 together with the lower, first sealing element 62.

In the axially opposite second end portion of the upper valve member 60 also radially outwardly projecting second flanges are provided which serve to receive a second annular sealing element 64. The upper, second flanges together with the upper, second sealing element 64 form an upper valve edge 66.

The axial length of the upper valve member 60 is selected so that the upper valve member 60 in the assembled state, when the valve core 14 is seated on the valve seat 12, extends with its second upper end portion into the lid chamber 34. The outer diameter of the radially outwardly projecting second flanges and the second sealing element 64 are selected so that they seal the lid chamber 34 against the water-carrying inlet nozzle 20 and the valve is closed only via the connecting grooves 36 on the inside of the lid cylinder 32 water from the inlet port 20 in the lid chamber 34 can flow. Since the hollow cylindrical upper valve member 60 is open at the top and axially from below the lower valve member 40 is screwed, the second end portion of the wood cylindrical, upper valve member 60 which engages in the lid chamber 34 expands the volume of the lid chamber 34 by the volume of its cavity 35th and the volume of the fluidically connected to the cavity 35 valve chamber 50th Before a rinsing process is the pressurized water with the high pressure Dl, as it prevails in the pressurized water tank 2004 and the inlet port 20 and possibly if necessary or present in a connecting line 2020, on the valve body 14 of the valve seat 12 is sealingly seated. The lid space 34 is filled with pressurized water of the same pressure Dl, since the lid space 34 is fluidly connected via the connecting grooves 36 with the inlet port 20. About the lid chamber 34 and the cavity 35 and the valve chamber 50 (hereinafter only briefly summarized under the term cover chamber 34) of the valve body 14 with pressurized water of the pressure Dl filled. The under pressure Dl standing water in the inlet nozzle 20 presses on the lower valve edge 68 and equally on an upper valve edge 66 of the valve body 14. Against bottom prevents the valve seat 12 movement of the valve body 14 down and up in the direction of the valve cover 8 prevents the under the same pressure Dl standing water in the lid chamber 34, a movement of the valve body upwards, so that the valve body 14 can escape the pressure of the 1 standing in the inlet port 22 water in any direction. The valve 10 is therefore closed and valve stub 24 and outlet stub 22 are empty, that is anhydrous. In them, only air (arrows 3003) under atmospheric pressure, which has flowed in through the ventilation channel 82 and the ventilation openings 80 (arrows 3000, 3002), and if present (as in the embodiment shown in the figures) via the control mechanism 70 with his Control element 74.

For opening the pressure water valve 10, the trigger 18 is actuated; in this case, the push button 18 ' pressed. As a result, with the push button 18 'connected punch 19 is pressed against the plunger 48 of the valve stem 46 and this is capped together with its resting on the sealing ring 43 plunger head 47 from its rest position. (An example of such a tilting of the valve stem 46, but with a slightly different trigger mechanism, is shown purely schematically in Fig. 10.) By tilting a gap between the plunger head 47 and sealing ring 43 is formed and a flow connection between the valve chamber 50 and the central opening 44 in the cylinder bottom 42 of the valve chamber 50 made. Via this flow connection, the water under pressure 1 flows from the valve chamber 50, from the cavity 35 and the lid space 34 into the valve stub 24 and further into the outlet stub 22. Only when the return spring 27 in the actuator 16, the trigger 18 / push button 18 'together with the punch 19 returns to the starting position, and the valve stem 46 returns to its original position. By the coil spring 54, the plunger head 47 is again pressed sealingly securely on the sealing ring 43 and closes the central opening 44 in the cylinder base 42 and thus the valve chamber 50 and the communicating with her in fluid communication cavity 35 and the lid chamber 34th

Because the water under pressure D1 flows out of the lid chamber 34 and the adjacent spaces 35, 50, the pressure in the lid chamber 34 decreases. The valve body 14 can now follow the pressure Dl of the water (arrow 1000) in the inlet nozzle 20 Dodge above, since the pressure Dl on the upper edge of the valve 66 from a certain time no back pressure Dl in the lid chamber 34 learns more (see Figures 7 and 8). In As a result, the water in the inlet nozzle 20 pushes the valve body 14 upwards into the lid chamber 34. The inwardly directed water (arrow 1000) from the inlet nozzle 20, which is fed via the pressurized water container 2004, causes the valve body 14 to move from its valve seat 12 in the direction of Lid chamber 34 moves until the cap lid 53 comes with the adjusting screw 28 'into abutment, whereby the maximum stroke H of the valve body 14 is fixed and thus the size of the released flow gap S above the valve seat 12. About this gap S flows in the inlet port 20th nachdrückende pressurized water (1000) in the valve stub 24 (arrow 1002) and further through the drain port 22 (arrow 1003) in the drain line 2022 and the toilet tank 2006. The water flows until the pressurized water tank 2004 is empty, the pressure of the nachfliessenden Water decreases with time.

If, as in the example shown here, a control mechanism 70 is provided in the ventilation channel 82, then the control mechanism 70 prevents with its control element 74 that during the first powerful outflow of water (arrows 1000, 1002, 1003) through the valve stub 24 into the outlet connection 22nd Water flows into the ventilation channel 80 and possibly injected out of the ventilation openings 82.

If the pressurized water tank 2004 is empty and thus flows for a certain time (namely until the pressurized water tank is filled with water) no more water into the inlet port or only water with a lower pressure, the lid spring 56 presses the valve body 14 securely sealed in his starting position back on the valve seat 12 and interrupts the flow connection between inlet port 20 and drain port 22. The pressurized water tank 2004 of pressurized water flushing fills again with water, as well as the inlet port 20 and a possibly existing connection line 2020. Fill via the grooves 36 on the inside of the cap connector 32 also the lid chamber 34 and the adjacent rooms 35, 50 again with water. The water continues to flow until the water is again under the pressure Dl and presses from the outside or from the inlet pipe 20 ago with the pressure Dl on the valve body 14 and from the inside of the lid chamber 34 and the adjacent spaces 35, 50th Thus, there is again a pressure equilibrium with the pressure D 1 between the side of the inlet nozzle 20 and the side of the lid chamber 34, so that the valve body 14 is again reliably held on the valve seat 12.

In the event that, for example, by a pipe break or another accident in the water supply line 2014 (Fig. 1) negative pressure prevails, it must be prevented that via the pressurized water tank 2004 and the pressure water valve 2010, 10 dirty water is sucked into the water supply line 2014. This is accomplished (see Figure 9) in the pressure water valve 10 presented here, that, even if the valve body 14 is no longer sealingly seated on the valve seat 12 by the negative pressure, air through the ventilation openings 80 (arrows 3000), the ventilation channel 82 (arrows 3002), the outlet nozzle 22 (arrow 3004), the valve stub 24 (arrow 3006) and further via the inlet port 20 (arrow 3008) in the direction of pressurized water tank 2004 and water supply line 2014 is sucked. The air in the outlet 22 and in the outlet Valve stems 24 thus form something like a flow cushion made of air (arrows 3004, 3006), which is above the outflow line 2022 and prevents dirty water from being sucked out of the toilet bowl 2006.

As already mentioned above, FIG. 10 schematically shows an alternative possibility of how the valve stem 46 can be tilted out of its rest position. For this purpose, only a small section of the alternative pressure water valve 10 'with the valve chamber 50 and the inlet pipe 20 is shown in FIG. The pressurized water valve 10 'outlined here functions the same as the above-described pressure water valve 10, except for a stamping punch (FIGS. 2 to 8), but with a pressure lever 92 acting via a joint 90, which operates in FIG engages this example on the lid chamber 34 and is connected to the valve stem 46 in the valve chamber 50 of the valve body 14. The lever 92 may optionally again undergo a deflection 94 as indicated here. For a well-defined, guided movement of the valve stem 46, the joint 90 is mounted on the one hand in a joint carriage 96 and on the other hand in a slot 88 extending along a ram longitudinal axis 49 in the tappet 48 of the valve stem 46.

If pressure is exerted on the lever 92 from above (double arrow c) the articulated slide 96 moves to the right (double arrow a) and with a corresponding movement of the articulation 90 in the slot 88 (double arrow b) the valve stem 46 is tilted out of its rest position. The plunger head 47 in the valve chamber 50 also tilts and gives at least a portion of the central opening 44 in Cylinder bottom 42 of the valve chamber 50 free. The valve body 14 dissolves in the sequence of the valve seat 12 and the pressurized water flushing begins. If the pressure on the lever 92 (double arrow c), the slide carriage 96 moves back to the left (double arrow a) and the valve stem tilts back to its original position (double arrow b), in which the plunger head 47, the central opening 44 in the cylinder bottom 42nd the valve chamber 50 closes again. If the pressurized water has drained off and flows only under lower pressure water or no more water, a spring (not shown here) pushes the valve body 14 back onto the valve seat 12 and water flows into the inlet connection 20 and via grooves (not shown here) ) in the lid space 34 and the valve chamber 50 after.

A further embodiment of the pressure water valve 200 is explained below with reference to FIGS. 11 to 16, in which the flushing with two different amounts of water is possible.

The further embodiment of the pressure water valve 200 is constructed in its basic principle the same as described with reference to Figures 2 to 9 pressure water valve 10. That is, this valve 200 has a valve body 14 on a valve seat 12 and a valve body 14 disposed above the lid space 34, the between two rinsing via Verbindungsnuten (not shown here) is filled with pressurized water. The lid space 34 is in turn closed above the valve body 14 with a valve cover 8, which is screwed into or screwed into a cover stub 25 of the valve housing 9. The cover stub 25 or cover 8 is in turn with Ventilation openings 80 provided with a

Ventilation channel 82 are in communication, as has already been shown for the pressure water valve 10 in Figures 2 to 9. Since the construction and function have already been explained and illustrated in detail with reference to FIGS. 2 to 9, a detailed illustration and identification with reference numerals has been omitted for the embodiment of the pressurized water valve 200 shown here in FIGS. 11 to 16 for the purpose of clarity and comprehensibility.

The further embodiment of the pressure water valve 200 differs from the pressure water valve 10 of Figures 2 to 9 in that the valve body 14 is compact and therefore not hollow, and that two actuators 210, 250 are provided, which open a choice between two different Spülwassermengen. In the example shown here, the two actuating elements 210, 250 are combined in an assembly 205.

Each actuating element 210, 250 has a flooding chamber 220, 260, which is fluidically connected via a connecting channel 292 to the lid chamber 34 of the pressure flushing valve 200. The flooding chambers 220, 260 are fluidically connected to a water outlet 290 on their side opposite the connection channel 292. Each actuating element 210, 250 also has a trigger 211, 251, which can be operated from the outside and extends into the connection between the respective flooding chamber 220, 260 and the water outlet 290, where it allows a valve-like closing and opening of this fluidic connection. The water outlet 290 is connected to a sewer, as indicated for example in Fig. 1 by the reference numeral 2008. This connection can be realized via a separate outflow line (not shown). The water outlet 290 may be connected to drain the water from the flooding chambers 220, 260 but also, for example, with the drain port 22 or the valve stub 24 of the pressure flush valve 200.

The flooding chambers 220, 260 each have, in the example shown here, a control body 222, 262 which is linearly movable in the respective flooding chamber 220, 260, similar to a piston. Each flooding chamber 220, 260 is provided on its inner wall with grooves (not shown) analogous to the lid chamber 34 of the pressure water valve. It is also conceivable, however, that instead of the inner walls of the flooding chambers 220, 260, the control bodies 222, 262 are provided with grooves. Between two rinsing operations, the associated flooding chamber 220, 260 is filled with pressurized water via the said grooves, which flows in via the lid chamber 34 and the connecting channel 292. In each flooding chamber 220, 260, an adjusting screw 212, 252 is screwed, which limits the stroke h, h2 of the control body 222, 262 in the flooding chamber 220, 260, which finally defines the passage gap S in Druckspülventil 200 and thus the rinse water volume of the pressure water valve 200 is.

Between two flushes, the triggers 211, 251 keep the water outlet 290 closed. The lid chamber 34, the connecting channel 292 and the flooding chambers 220, 260 are filled with pressurized water, which is under a pressure Dl (see description of the embodiment of the FIGS. 2 to 9) is greater than the water pressure D2 under atmospheric influence. If, for example, the trigger 251 is actuated, as shown by way of example in FIGS. 13 and 16, the water flows out of the flooding chamber 260 via the water outlet 290. The pressure in the flooding chamber 260 on the side of the adjusting screw 252 decreases and falls to atmospheric pressure D2. The pressure water in the connecting line and the lid chamber 34 under pressure Dl pushes and shifts the control body 262 until it comes with the adjusting screw 252 into abutment. As a result, the pressure in the lid chamber 34 decreases and the valve body 14 is raised by the pressure of the pressurized water in the inlet nozzle 20. About the forming gap S above the valve seat 12, the rinse water flows under pressure Dl from a connected to the inlet port 20 pressurized water tank in the Abflussut zen 22 and further into the toilet bowl.

In the example shown here in FIGS. 11 to 17, unlike the example shown in FIGS. 2 to 9, the valve stub 24 has a larger diameter than the outlet stub. The valve stub 24 surrounds the outlet nozzle 22, wherein the outlet nozzle 22 projects beyond the valve stub 24 in the outflow direction and wherein valve stub 24 and outlet stub 22 are preferably arranged concentrically. This version of valve stub and outlet has been chosen because in this example the pressurized water tank 2004 passes directly into the inlet port 20.

Reset devices in this case as

Rückstellfedernausgebildet - which are not shown here for a better overview - ensure that the Regulating body 262 and the valve body 14 are returned to their original position. Over the connecting grooves in the region of the cover chamber 34 and the grooves in the flooding chamber 260 or in the control body 262, the cover chamber 34, connecting channel 292 and flooding chamber 260 are filled with water again after the flushing operation until the water there is under the same pressure D1 as in the inlet connection 20 or the pressurized water tank 2004.

In general, the actuators 210, 250 with the capacity of their flooding chambers 220, 260 are formed or the adjustment screws 212, 252 screwed so that depending on which trigger 211, 251 is actuated different amounts of water is provided for rinsing , In the example shown here (see in particular FIGS. 14 to 16), when the trigger 211 is actuated, a full flush, e.g. with 3 liters, because the stroke h of the control body 222 in the flooding chamber 220 is greater than the stroke h2 of the control body 262 in the flooding chamber 260, so that the valve body 14 when pressing the trigger 211 performs a full stroke of a to c (Fig 15, large volume of rinse water). In contrast, the stroke of the valve body 14 when pressing the other trigger 251 extends only from a to b (FIG. 16), the passage gap S above the valve seat 12 is correspondingly smaller and it can only be about half the amount of water, ie about 1.5 Be purged liters.

In Figs. 11 to 16 is the alternative embodiment of the pressure water valve 200 with the two

Actuators 210, 250 for different Rinse water quantities shown in a compact design. The two actuating elements 210, 250 are combined in a compact assembly 205 and connected directly to the valve cover 8 of the valve. With a corresponding embodiment of the valve cover 8, the assembly 205 so to speak instead of the adjusting screw 28 'by means of screw connection with the valve cover 8 connectable, wherein the screw connection includes the connecting channel 292. As with the further embodiment of the

Pressure water valve 300 shown in Figure 17, but it is also possible to place the compact assembly 205 with the two actuators 210, 250 for different Spülwassermengen away from the valve housing 9. For this purpose, only the connecting channel 292 between the lid chamber 34 of the valve and the flooding chambers 220, 260 of the actuating elements 210, 250 and a line 298 from the water outlet 290 to Abflusstut zen 22 must be provided in the appropriate length.

It is clear to the person skilled in the art that, and in what manner, the described embodiments or the details described with reference to the exemplary embodiments may usefully be combined within the scope of the patent claims. Due to lack of space, however, it is not possible to represent and / or describe all possible and meaningful combinations in detail.

Claims

Pressure water valve (10, 10 200, 300) for a toilet installation (2000) comprising:

A valve housing (9) with an inlet port (20) and an outlet port (22)

• a valve seat (12) and a valve body (12) arranged between the inlet nozzle (20) and outlet (22), that by actuating the valve, a defined volume of water for flushing through the outlet port (22) in a toilet bowl conductive is

• An actuating device, by means of which the valve actuated and the valve body (12) from the valve seat (14) is releasable;

• a back device which moves the valve body (14) back onto the valve seat (12);

An adjusting element, by means of which the water volume can be adjusted, which can be conducted for flushing into the toilet bowl,

characterized in that

• In the stroke direction of the valve body (14) a cover pipe (25) is provided with a cover chamber (34), wherein the cover chamber (34) is only fluidly connected by means of connecting grooves (36) with the inlet nozzle

• a valve stub (24) is provided which extends in the same direction as the outlet port (22) and which is axially shorter than the outlet port (22), wherein

• Outlet (22) and valve stub (24) radially enclose an annular cavity, the forms a ventilation channel (82), wherein the ventilation channel (82) in the region of the flat neck

(25) with ventilation openings (80) in

Flow connection is;

• The lid chamber (34) is fluidically connected to the outlet nozzle (22) and / or the valve stub

(24) connected, by means of

Actuator opening this

Connection and by means of at least a portion of the back part means a closure of this connection is possible.

Pressure water valve (10, 10 200, 300) according to claim 1,

characterized in that

the valve stub (24) has a smaller diameter than the outlet stub (22) and opens into the outlet nozzle (22), valve stub (24) and outlet nozzle (22) being preferably arranged concentrically.

Pressure water valve (10, 10 200, 300) according to claim 1,

characterized in that

the valve stub (24) has a larger diameter than the outlet nozzle (22) and the outlet nozzle (22) surrounds, wherein the outlet nozzle (22) projects beyond the valve stub (24) in the outflow direction and wherein the valve stub (24) and outlet nozzle (22) preferably are arranged concentrically.

4. pressure water valve (10, 10 ^λ , 200, 300) according to any one of the preceding claims,

characterized in that

the valve housing (9) is integrally formed and in particular with the inlet port (20), the cap nozzle (25), the valve stub (24) and the discharge nozzle (22) is integrally formed, wherein the valve housing (9) in particular as a casting or injection molded part is.

5. pressure water valve (10, 10 200, 300) according to one of the preceding claims,

characterized in that

the valve body (14) is substantially hollow and its at least one cavity (35, 50) is in fluid communication with the lid chamber (34), wherein the at least one cavity (35, 50) has a central opening (44) in the direction of Abflussstutzens (22), wherein by means of an operable via an actuator valve stem (46) valve-like closing and opening of the central opening (44) is possible.

6. pressure water valve (10, 10 200, 300) according to claim 5,

characterized in that

the tappet (46) has a tappet head (47) closing off the central opening (44) and from which projects a ram (48) having a smaller diameter than the tappet head (47), the tappet (48) and with it the Plunger head (47) can be tilted out of its rest position by means of an actuating device.

Pressure water valve (10, 10 200, 300) according to claim 6,

characterized in that

the plunger (48) protrudes from the plunger head (47) so that it protrudes out of the cavity (50) in the direction of the outlet nozzle (22) through the central opening (44), the plunger (47) being connected to an actuating device (16 ) belonging stamp (19) from its rest position can be tilted and the valve housing (9) has a housing extension (7) which receives the actuating device (16).

Pressure water valve (10, 10 200, 300) according to claim 6,

characterized in that

the plunger (48) protrudes from the plunger head (47) so as to protrude into the cover chamber (34) and to be actuable by means of a pressure lever (92), the pressure lever (92) forming part of an actuating device extending from the side of the cover chamber (34) over the valve body (14) is operable forth.

Pressure water valve (10, 10 200, 300) according to one of the preceding claims,

characterized in that

an adjusting element (28) is provided, by means of which the volume of water is adjustable, the Rinsing in the toilet bowl is conductive, the

Adjusting element (28) is preferably an adjusting screw, which of the the valve body

(14) opposite side into the lid chamber (34) protrudes.

10. pressure water valve (10, 10 200, 300) according to any one of the preceding claims,

characterized in that

the lid space (34) with at least one, preferably with two, possibly also with more than two flooding chambers (220, 260) of an actuating device fluidically in

Connection is, wherein each of the at least one flooding chambers (220, 260) on its the lid space

(34) opposite side with a

Water outlet (290) is in flow communication, wherein the connection between the respective flooding chamber (220, 260) and the water outlet (290) with a trigger (211, 251) is operable from the outside and in the connection between the respective flooding chamber (220, 260) and the water outlet (290) extends there and allows a valve-like closing and opening of this fluidic connection, wherein the opening of this compound also allows a flow of water from the lid chamber (34).

11. pressure water valve (10, 10 200, 300) according to one of claims 1 to 4,

characterized in that

the lid space (34) with at least one, preferably with two, possibly also with more as two flooding chambers (220, 260) of an actuating device fluidically in

Connection is made, wherein the valve body (14) is compact and wherein each of the at least one flooding chambers (220, 260) on its the lid space

(34) opposite side with a

Water outlet (290) is in fluid communication with the connection between the respective flooding chamber (220, 260) and the water outlet

(290) with a trigger (211, 251) is provided, which is operable from the outside and in the connection between the respective flooding chamber (220, 260) and the water outlet (290) extends and there allows valve-like closing and opening of this fluidic connection The opening of this connection also allows the water to flow out of the lid chamber (34).

Pressure water valve (10, 10 200, 300) according to claim 10 or 11,

characterized in that

at least two flooding chambers (220, 260) are provided, in which control bodies (222, 262) are linearly movable piston-like, wherein the stroke (hl, h2) of the control body (222, 262) by means of adjusting screws (212, 252) is einstallbar, and wherein the stroke (hl, h2) of the control bodies (222, 262) determines the volume of water escaping from the lid chamber (34) via the corresponding flooding chamber, whereby the stroke H of the valve body (14) during the flushing process and thus the gap S above the valve seat (12) and the amount of flushing water are defined during the flushing process. Pressure water valve (10, 10 ^λ , 200, 300) according to claim 12,

characterized in that

in each of the at least one flooding chambers (220, 260) a return part device, in particular a return spring is provided, which after draining the pressurized water from the flooding chamber

(220, 260) moves the corresponding control body (222, 262) back to its starting position,

and that each of the at least one flooding chambers

(220, 260) has grooves on its inner wall or the associated control body (222, 262) has grooves, the grooves after the rinsing operation allowing a subsequent flow of water from the lid space (34) into the flooding chamber (220, 260).

Pressure water valve (10, 10 200, 300) according to one of claims 11 to 13,

characterized in that

each of the at least one flooding chambers (220, 260) together with its trigger (211, 251) belongs to an actuating element (210, 250), and all actuating elements (210, 250) together with the water outlet (290) in an assembly (205) are summarized, wherein in particular the at least one flooding chamber (220, 260), the water outlet (290) and the flow connection between the two are integrally formed and in particular as a casting or injection molded part.

Pressure water valve (10, 10 200, 300) according to claim 14, characterized in that

the assembly (205) with the at least one actuating element (210, 250) by means of

Screw connection is directly connected to a cover 8 of the pressure water valve (10, 10 200, 300), which closes the lid chamber (34) on one side, wherein the screw connection includes a connecting channel (92) of the

Fluid communication between the at least one flooding chamber (220, 260) and the lid chamber (34).

16. pressure water valve (10, 10 200, 300) according to claim 14,

characterized in that

Connecting line (294) is connected to a cover 8 of the pressure water valve (10, 10 200, 300) which closes the lid chamber (34) on one side, wherein the connecting line (294) includes a connecting channel (292) which the flow connection between the at least a flooding chamber (220, 260) and the lid chamber (34).

17. pressure water valve (10, 10 200, 300) according to any one of claims 10 to 16,

characterized in that

the water outlet (290) is fluidically connected to the drain port (22) or the valve port (24) for drainage of the water. Pressure water flushing system (2002) for a toilet installation (2000) comprising:

At least one pressurized water tank (2004) which can be connected upstream to a local pressurized water or drinking water line (2014) and is in downstream communication with a pressurized water valve (2010, 10, 10 200, 300),

And a WC tank (2006) arranged downstream of the pressure water valve (2010, 10, 10 200, 300) and connectable with the latter, which can be connected downstream to a sewer pipe (2008);

characterized in that

• the pressure water valve (2010, 10, 10 200, 300) is designed according to one of the preceding claims.

Pressure water flushing system (2002) according to claim 18,

characterized in that

the pressure water tank (2004) is directly connected to the inlet port (20) of the pressure water valve (2010, 10, 10 200, 300) or merges into it.

Pressure water flushing system (2002) according to claim 18,

characterized in that

the pressure water tank (2004) by means of a connecting line (2020) to the inlet port (20) of the pressure water valve (2010, 10, 10 200, 300) is connected.