WO2018087070A1

WO2018087070A1 - Drain fitting

Info

Publication number: WO2018087070A1
Application number: PCT/EP2017/078428
Authority: WO
Inventors: Alfred Mahler
Original assignee: Geberit International Ag
Priority date: 2016-11-09
Filing date: 2017-11-07
Publication date: 2018-05-17
Also published as: AU2017357537B2; DK3538716T3; PL3538716T3; EP3538716A1; EP3538716B1; ES2856214T3; AU2017357537A1; CN109923267B; CN109923267A

Abstract

The invention relates to a drain fitting (1) for a flush tank, comprising a valve body (2) having a sealing element (4), which interacts with a valve seat (3), and having a float (5), wherein the valve body (2) together with the sealing element (4) for the valve seat (3) can be moved along a center axis (M) from an idle position into a flushing position and from the flushing position into the idle position, and comprising a float chamber (6) having an opening (28), through which the valve body (2) extends, wherein the float (5) can be moved within the float chamber (6) along the center axis (M) and hydraulically interacts with the float chamber (6). The float chamber (6) comprises at least one control passage (7), through which, as soon as a flushing water level (S) surrounding the drain fitting (1) is lowered to the height of the control passage (7), air can enter the float chamber (6) from regions (8) outside of the float chamber (6) in such a way that pressure can be equalized between the float chamber (6) and the regions (8) outside of the float chamber (6), wherein the float (5) can be moved from the flushing position into the idle position upon equalization of pressure. The float chamber (6) has a base section (9), which extends completely around the center axis (M), and a snorkel section (10), which adjoins the base section (9). Viewed transversely to the center axis (M), the cross-section of the snorkel section (10) is preferably smaller than the cross-section of the base section (9), wherein a column section (11) of the float (5) extends into the snorkel section (10).

Description

TITLE

SCHEDULE SET

TECHNICAL AREA

The present invention relates to a waste fitting according to the preamble of claim 1.

STATE OF THE ART

Drain fittings for triggering flushes from a cistern are known from the prior art. In particular, drain fittings have become known for selectively triggering a full flush or partial flush.

For example, EP 0 722 020 shows such a flushing device. For the partial flush a weight body is arranged, which can optionally be switched on the valve body.

From DE 10 2007 001 718 a further waste fitting has become known, which has a the float chamber adjoining extension portion. This waste fitting is disadvantageous because, due to the hydrostatic and hydrodynamic conditions, the valve body reaches a high speed during the movement from the scavenging position into the closed position, which leads to very loud noises when the closure body impinges on the valve seat.

SUMMARY OF THE INVENTION Based on this prior art, it is an object of the invention to provide a sequence which overcomes the disadvantages of the prior art. In particular, it is a preferred object to provide a waste set, which closes quieter. Accordingly, the subject matter of claim 1 is achieved by a pop-up assembly for a cistern comprising a valve body having a valve seat cooperating with a seal member and a float, the valve body having the seal member from the valve seat along a central axis from a rest position to a scavenge position and from the scavenge is movable to the rest position, and a float chamber having an opening through which the valve body extends through and movably supported therein, wherein the float is movable within the float chamber along the central axis and hydraulically cooperates with the float chamber. The float chamber includes at least one control passage through which, as soon as a flushing water level surrounding the drain assembly has dropped to the height of the control passage, air from areas outside the float chamber may enter the float chamber such that the pressure ratios between the float chamber and the areas outside the float chamber can be compensated are, wherein the float is movable in balancing the pressure conditions of the scavenge in the rest position. The float chamber has a base portion extending completely around the central axis and a snorkelling portion adjoining the base portion. The cross section of the snorkel section seen transversely to the central axis is smaller than the cross section of the base section. The float has a lower portion from which a pillar portion extends away, with the float having the pillar portion extending into the snorkel portion. The lower portion extends and substantially moves into the base portion. By extending the float into the snorkel section, there is the advantage that, with the increased volume of the float, the proportion of water which presses the float in the float chamber can be reduced, as a result of which the noise formation during the closing process can be reduced. Furthermore, the volume of the float chamber can be increased by arranging the snorkel section with a smaller cross-section than the base section, without adversely affecting the size of the drain fitting or its function. This has the advantage that, due to the increased volume, a simplified optimization of the Closing process is enabled.

Below the column section, the float, as mentioned, a lower portion, wherein the lower portion is substantially cylindrical, in particular circular cylindrical, is formed and in the filling position, the base portion of the float chamber preferably fills or substantially fills.

The column section is preferably designed as a float. Particularly preferably, the column section, as well as the lower section, is substantially formed as a cavity filled with air.

By the term "extending in" it is meant that the column section extends into the snorkel section both in the scavenge position and in the rest position. The term "snorkel section" is understood to mean a section which supplements the base section in the installed position upwards.

Preferably, the float or the cavity is formed closed at the top. This means that no air can escape from the float at the top. In this case, the lower section and the column section are particularly preferably formed closed at the top. That is, the lower portion and also the column portion are formed without an opening through which air could escape upward. So it is a float, the upper side is completely closed. This gives the advantage that the swimmer always buoys when it is surrounded by water. Also eliminates an active control of the float with respect to the float functionality.

In other words, the float has an upwardly closed cavity. The upwardly closed cavity is formed by the pillar portion and the lower portion. Preferably, the cavity of the float seen from below with a circumferential side wall which extends around the lower portion, with a transversely or angled inclined thereto transition wall which limits the lower portion upwards, with a circumferential side wall, the the transition wall adjoins the top and the column section laterally limited, and with an end wall, which closes the column section upwards limited. The end wall extends transversely or angled inclined to the circumferential side wall. In this context, "upward" refers to installation in a direction from the valve seat seen upwards, ie away from the valve seat.

In a preferred variant, the lower portion is open at the bottom. When the cistern fills up the air remains due to the upwardly closed design of the lower portion and the column section in the lower portion and in the column section. Through the air, the buoyancy force is provided. More preferably, the lower portion is open at all times downwardly and substantially limited by said side wall of the lower portion. That is, there is no opening, which must be controlled in any way to provide the function of the float.

In a second variant, the lower portion may also be formed closed.

Preferably, the valve body further comprises an overflow pipe, wherein the float with the pillar trim and the lower portion extend outwardly around the overflow pipe, in particular such that the overflow pipe extends centrally through the float so that the pillar portion and the lower portion each have the cross section have a cylinder ring. The float is preferably formed by the said end wall, which limits the column section at the top limited to the overflow pipe.

Particularly preferably, the overflow tube projects beyond the top of the column section and protrudes downwards out of the lower section. Moreover, the seal can be attached to the overflow pipe.

Preferably, the float with the column section and the lower section has no moving parts, which would be actively controlled for the float function. Preferably, the snorkel portion of the float chamber extends substantially concentric with the base portion. The snorkel section and the base section are preferably arranged concentrically one above the other. The extent of the snorkel section seen transversely to the central axis is preferably smaller than the extent of the base section.

In the present context, "concentric" is understood to mean that the snorkel section and the base section extend around a common central axis, the two sections being designed to encircle around the central axis.

Preferably, the pillar portion of the float extends substantially concentric with the lower portion. The column section and the lower section are preferably concentric one above the other. The extension of the column section viewed transversely to the central axis is preferably smaller than the extension of the lower section.

In the present context, "concentric" is understood to mean that the column section and the lower section extend around a common central axis, the two sections being designed to encircle around the central axis.

The outer shape of the float with the lower portion and the pillar portion and the inner shape of the float chamber with the base portion and the snorkel portion are such that the float is movable in the float chamber. The two forms are substantially matching each other, optionally with play each other, formed.

Preferably, as seen in the direction of the central axis, the snorkel section lies within the maximum diameter of the base section. The diameter of the snorkel section is thus smaller than that of the base section. The same can be said for the diameter ratio between the lower portion and the pillar portion.

Preferably, the snorkel portion and the base portion extend completely around the central axis and preferably have substantially constant diameter each. The snorkel section and the base section are therefore designed essentially as cylinders, in particular with a circular base area. The diameter of the snorkel section is smaller than that of the base section.

Preferably, the column portion and the lower portion extend completely around the central axis and preferably have substantially constant diameters, respectively. The column section and the lower section are therefore essentially designed as cylinders, in particular with a circular base area. The diameter of the column section is smaller than that of the lower section.

Preferably, the transition between the snorkel section and the base section is conical. Through this transition, the diameter reduction from the base section to the snorkel section is achieved.

Preferably, the height of the base portion in the direction of the central axis is substantially smaller than the height of the snorkel portion, wherein the height of the base portion is preferably between 5% and 20% of the height of the entire float chamber. As a result, a compact design of the waste set can be achieved.

Preferably, the height of the lower portion seen in the direction of the central axis is substantially smaller than the height of the column portion, wherein the height of the lower portion is preferably between 5% and 20% of the height of the entire float. The height of the entire float consists of the height of the lower section and the height of the column section.

Preferably, float chamber, so the snorkel section and the base portion, apart from the at least one control passage, to the end wall laterally formed with a side wall completely closed. At the bottom, the float chamber is open. In the end wall, the bearing opening is preferably present, in which the valve body movably mounted is.

Preferably, above the float chamber, a water reservoir is present, which opens into the float chamber with a passage, which can flow into the float chamber through the passage of water, which is located in the water tank. The water reservoir is filled during the filling of the cistern and is designed such that it can empty when emptying the cistern only on the passage. The water reservoir can also be referred to as a reservoir.

Preferably, the lower portion of the float in the scavenge is substantially completely in the float chamber. This means that the lower section is moved substantially completely into the float chamber when the flush is triggered. Particularly preferably, the sealing element of the valve body lies in the flushing position substantially completely in the float chamber. As a result, the sealing element is protected by passing water.

Preferably, the cross-section of the column section, seen in cross section transversely to the central axis, fills the cross-section of the snorkel section substantially completely or at least 55%, in particular at least 75%. That is, the column section extends in cross section transversely to the central axis substantially completely or almost completely over a major part of the cross section of the snorkel section. Preferably, the column section fills the volume of the snorkel section substantially completely, or at least 55%, or at least 90%, when the float is in the rinse position. In this context, "essentially completely" means that the column section and the snorkel section are positioned relative to one another in such a way that there is always a residual amount of water between the column section and the snorkel section. when the float moves from the spill position to the rest position, it can be kept small. Particularly preferably, play is present between the outer sides of the column section and the insides of the snorkel section.

Preferably, the control passage for the initiation of a first purge is formed with a first purge quantity. Furthermore, the drain fitting comprises a control unit for controlling a second flushing quantity. Upon reaching a water level intended for the second flushing quantity, the control unit provides a closing force on the valve body with a closing weight, wherein the closing force can be switched by the control unit onto the valve body via a switching element.

When the control unit is raised, the switching element preferably automatically engages with the valve body in a latching connection.

Preferably, the height position of the closing weight is adjustable over an adjustment range. This means that the closing weight can be moved over the setting range. At a higher level, less water is removed during the flushing process than at a lower level.

Preferably, the first purge is a full rate purge and the second purge is a partial purge. This means that when the closing weight is activated, a partial flush is triggered and when the control passage through the water level is reached, a full flush is triggered.

Alternatively, the first purge is a partial purge and the second purge is a full-flush. This means that when the closing weight is activated, a full flush is triggered and when the control passes through the water level, a partial flush is triggered.

Preferably, a plurality of control passages are arranged at different altitudes, wherein the drain fitting further comprises at least one closure element with which one of the control passages is releasable and the other of the control passages are closable. The closure element is preferably a slide, which is movably mounted on the outside of the drain fitting.

Preferably, at least one of the control passages is arranged in the snorkel section, wherein, if present, the other of the control passages are arranged in the snorkel section and / or in the base section.

Preferably, the adjustment range of the closing weight extends in height at least to below the uppermost control passage. Thereby, a superposition of the heights between the control unit and the control passage can be achieved, which increases the flexibility of the setting of the water extraction.

Preferably, the control unit is arranged outside the snorkel section and can move up and down next to the snorkel section.

Preferably, the snorkel scraper comprises an opening for venting upon filling the float chamber.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. La / lb is a perspective view of an embodiment of an inventive waste set;

FIG. 2 shows a sectional view through the waste fitting according to FIG. 1 in the rest position; FIG. Fig. 3 is a further sectional view through the waste set according to Figure 1 in

Spüllage;

Fig. 4 is a schematic representation of the inventive drain set in

Rest position; 5 is a schematic representation of the inventive Ablaufgamitur in a Vollmengenspülung. and

Fig. 6 is a schematic representation of the inventive waste set in a partial flush.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the figures, a waste set 1 is shown for a cistern. The drain fitting 1 comprises a valve body 2 with a sealing element 4, which cooperates with a valve seat, and a float 5. The valve body 2 is connected to the sealing element 4 from the valve seat 3 along a central axis M from a rest position to a scavenge and from the scavenge in the Resting position movable. In the rinse water can flow through the gap between the valve seat 3 and sealing element 4. Furthermore, the drain fitting 1 comprises a float chamber 6. The float chamber 6 has an opening 28 through which the valve body 2 extends. The valve body 2 is movably mounted in the opening 28. The float 5 is substantially within the float chamber 6 along the central axis M movable and works with the float chamber 6 together hydraulically.

The float chamber 6 is, apart from the at least one control passage 7, formed up to an end wall 19 with a side wall 34 laterally completely closed. The control passages 7 penetrate the side wall 34. The side wall 34 bounds the base section 9 and the snorkel section 10 outwards. The opening 28 is located in the end wall 19. Towards the bottom, the float chamber 6 is open.

The float chamber 6 comprises at least one control passage 7, through which, as soon as a flushing water level S surrounding the drain set 1 has sunk at the level of the control passage 7, air can enter areas 8 outside the float chamber 6 in the float chamber 6, such that the pressure conditions between Float chamber 6 and 8 areas outside the float chamber 6 are compensated. In this compensation, the float is 5 or the valve body 2 from the scavenging position into the rest position movable.

The float 5 extends into the snorkelling section 10 with a column section 11. As a result, the relevant volumes for the buoyancy and lowering are optimally utilized and the movement of the valve body 2 can be optimized. Below the column section 11, the float preferably has a lower section 29, which is movable up and down in the base section 9. The float 5 is formed completely closed at the top. This means that the air can flow into the float via the lower section 29, but can not escape upwards.

The inner shape of the float chamber 6 will be explained in more detail with reference to Figures 2 and 3. The float chamber 6 comprises a cylindrical, in particular circular-cylindrical, base section 9 extending completely around the central axis M and a snorkel section 10 adjoining the base section 9. The snorkel section 10 adjoins the base section 9. In the installed position, the base portion 9 is below the snorkel portion 10 and the snorkel portion 10 above the base portion 9. It can also be said that the snorkel portion 10 extends the float chamber 6 from the base portion 9 upwards. Towards the top, the snorkel section 10 is delimited by the end wall 19.

The cross section of the Sclinorchelabschnittes 10 seen transversely to the central axis M is smaller than the cross section of the base portion 9. The volume of the snorkel section 10 is preferably greater than that of the base portion. 9

The snorkel section 10 extends substantially concentrically with the base section 9. That is, the two cylinders or circular cylinders extend around the common center axis M. The snorkel section 10 has a constant diameter over its entire height H10. Likewise, the base portion 9 also has a same diameter over its entire height H9. The diameter in this context is the inner diameter. The inner diameter of the base portion 9 is greater than the inner diameter of the Sclinorchelabschnittes 10th In the embodiment shown, the transition 30 between the base portion 9 and the snorkel portion 10 is conical. That is, in the region of the transition 30, the diameter of the float chamber decreases from the larger diameter of the base section 9 to the smaller diameter of the snorkel section 10.

The outer shape of the float 5 will be explained in more detail with reference to Figures 2 and 3. The outer shape of the float 5 is fitting or substantially similar to the inner shape of the float chamber 6 is formed. That is, the inner shape is the same shape or shape similar to the outer shape. As mentioned herein, it is advantageous if there is clearance between the inner mold and the outer mold.

The lower portion 29 of the float 5 has a cylindrical, in particular circular cylindrical, outer shape. The column section 1 1 of the float 5 has a cylindrical, in particular circular cylindrical, outer shape. The outer diameter of the cylindrical outer mold in the region of the column section 11 and in the region of the lower section 29 is preferably constant.

In the middle, an overflow pipe 33 extends through the float 5. That is, the column section 11 and also the lower portion 29 have on the inside the cross section of a cylinder ring.

The transition from the lower portion 29 to the column section 11 is formed here as a diameter jump. As shown by the figures, an upwardly closed transition wall is arranged in the region of the diameter jump. The transition wall bears the reference numeral 35.

The column section 11 extends substantially concentrically to the lower section 29. That is, the two cylinders or circular cylinder extend around the common center axis M. Upwards, the column section 1 1 is closed in the region of its upper end 18 with an end wall 36. The end wall 36 extends from the side wall 37 of the column section 11 to the side wall 38 of the overflow pipe 33. The end wall 36 is closed at the top, ie without an opening educated. The column portion 1 1 and the lower portion 29 have a constant diameter, wherein the diameter of the column portion 1 1 is smaller than the diameter of the lower portion 29. The diameter is in this context, the outer diameter.

The outer diameter of the lower portion 29 preferably corresponds substantially to the outer diameter of the sealing element. 4

Both the lower portion 29 and the pillar portion 11 are each formed in the embodiments shown as a cavity, so that they experience buoyancy in the water. The cavity is designed to be closed at the top, so that no air can escape from the float 5 or from the lower portion 29 and the column portion 11 at the top. The provided by the two sections cavity can be filled with air. The cavity is closed in the embodiments shown upwards and formed open at the bottom. It can also be designed as a closed cavity.

In the embodiments shown, the cavity of the float 5 seen from below with a circumferential side wall 37 which extends around the lower portion 29 around, with a transversely extending transition wall 35 which defines the lower portion 29 upwards, with a circumferential side wall 38, which adjoins the transition wall 35 at the top and the column portion laterally limited, and with the end wall 36, which closes the column section 1 1 at the top, limited. Towards the bottom, ie in the region of the lower portion 29, the float 5 is open.

From the sectional views of Figures 2 and 3 it is shown that the column section 1 1 seen in cross section transverse to the central axis M, the cross section of the snorkel section 10 substantially fills. The degree of filling is preferably at least 70% when the Säulenabsclinitt 1 1 is with the float 5 in the flushing position. However, the column section 1 1 can also fill the snorkel section 10 at least 80% or substantially completely. On the basis of Figures 4 to 6, individual partial features of the inventive Expiry set 1 will now be explained in more detail.

In the figure 4, the float 5 is in the rest position. The sealing element 4 rests on the valve seat 3. Upon initiation of a first flush, the float 5 is raised via an actuating portion 22. Due to the interaction between the float 5 and the float chamber 6, the float 5 remains in its flushing position. The float 5 remains in its flushing position until the flushing water level S is lowered to the level shown in FIG. 5. Upon reaching this level, air can enter through the control passage 7 in the float chamber 6 and the hydraulic balance between the float 5 and the float chamber 6 is disturbed, causing the float 5 is lowered in the direction of valve seat 3 from the scavenge to the rest position. FIG. 6 shows a second flush. Here, the float 5 is raised with an operating section 23, which here is part of a control unit 12. It comes to an engagement between the switching member 14 and the closing weight 13. The closing weight 13 has here the shape of a filling with water cup. As soon as the flushing water level has lowered to the level shown in FIG. 6, the weight of the water in the closing weight 13 becomes effective and a force is applied to the float 5 via the switching element 14. Due to this force, the float 5 is then moved from its scavenging position in the direction of the valve seat 3 into its rest position. The column section 1 1 is, as shown in the figures, designed such that when the valve body 2 is in the flushing position, its upper end 18 and its end wall 36 spaced from the end wall 19 of the snorkel section 10 is located. Because of this distance then there is a certain amount of residual water in the float chamber 6. The distance may not be too large, otherwise increase the closing noise.

Preferably, between the outer sides 20 of the column section 11 and the inner sides 21 of the snorkel section 10 a certain amount of play exists. This game is on the one hand advantageous in the relative movement between column section 11 and snorkel section 10. On the other hand, it is ensured that there is always a certain amount of residual water in this area. The formation of the snorkel section 10 and the column section 11 with the reduced diameter relative to the base section 9 or the lower section 29 has the advantage that parts of the control unit 12, in particular the closing weight 13, can extend downwards next to the snorkel section 10. That is, parts of the control unit 12 can move up and down next to the snorkel section 10.

The snorkel section 10, viewed in the direction of the central axis M, has a height H10. The height H10 is greater than the height H9 of the base portion 9. In this way, the movement path of the control unit 12 can be further increased. The height H9 of the base portion 9 is substantially smaller than the height H10 of the snorkel portion. Preferably, the height H9 of the base portion 9 is between 5% and 20% of the height H of the entire float chamber 5.

Similar height ratios are provided on the float 5 between the height H29 of the lower portion 29 and the height Hl 1 of the column portion 1 1.

As explained above, the control passage 7 for triggering a first purge is formed with a first purge amount. The control unit 12 is designed for the control of a second flushing quantity. The first purge amount is preferably a full-amount purge amount, and the second purge amount is preferably a partial-purge amount.

In the embodiment shown, a plurality of control passages 7 are arranged. The control passages 7 are at different heights. A first control passage 7 lies in the region of the upper end of the snorkel section 10. Further control passages 7 are arranged in the snorkel section 10. That is to say the control passages 7 are distributed in their height above the snorkel section 10 in the embodiment shown. But it is also possible that additional Control passages are arranged in the base portion 9. Then the control passages 7 would be distributed in height over the base portion 9 and the snorkel portion 10. The waste fitting 1 further comprises at least one closure element 16, with each of which one of the control passages 7 is releasable and the other of the control passages 7 are closable. That is, an installer may define with the shutter member which of the control passages 7 should be the active control passage. The other control passages 7 are then closed accordingly.

At least one of the control passages 7 is thus arranged in the snorkel section 10. The other control passages 7 are arranged either in the snorkel section 10 or in the base section 9.

The closing weight 13 is adjustable via an adjustment range 15. That is, the closing weight 13 can be adjusted in height. As a result, the corresponding amount of flushing water can be defined. Preferably, the adjustment range 15 extends in height at least to below the uppermost control passage 7. This allows a superposition of Spülwassermengen be achieved.

In the illustrated embodiment, the control unit 12 further comprises a bearing rod 24, wherein the closing weight 13 is mounted on the bearing rod relative to the bearing rod 24 adjustable. The switching member 14 is driven via a correspondingly formed control surface 25, which is arranged here on the housing in the region of the water reservoir 31.

Below the float chamber 6, the drain fitting here comprises a connecting element 26, on which the valve seat 3 is arranged, wherein the connecting element 26 is connectable to a cistern. The connecting element 26 has a plurality of openings 27 through which the rinse water can then flow to the valve seat 3. Above the float chamber 6, an optional water reservoir 31 is present, which opens into the float chamber 6 with a passage 32. Through the passage 32, water which is located in the water reservoir 31 can flow into the float chamber 6.

LIST OF REFERENCE NUMBERS

Drain fitting 23 operating section

Valve body 24 bearing rod

Valve seat 25 control surface

Seal element 26 connecting element

Float 27 breakthroughs

Float chamber 28 opening

Control passage 29 lower section

Areas outside the 30 transition

Float chamber 31 Water tank

Base section 32 passage

Snorkel section 33 overflow pipe

Column section 34 side wall

Control unit 35 transition wall

Closing weight 36 end wall

Switching device 37 side wall

Adjustment range 38 side wall

Closure element M Center axis upper end S Rinse water level

End wall H heights

outside

inside

actuating section

Claims

1. drain set (1) for a cistern, comprising

a valve body (2) having a sealing element (4) cooperating with a valve seat (3) and a float (5), the valve body (2) having the sealing element (4) being spaced from the valve seat (3) along a central axis (M) of one Resting position in Spüllage and from the Spüllage in the rest position is movable, and

a float chamber (6) having an opening (28) through which the valve body (2) extends, the float (5) being movable within the float chamber (6) along the central axis (M) and communicating with the float chamber (6) works together hydraulically,

wherein the float chamber (6) comprises at least one control passage (7) through which, as soon as a flushing water level (S) surrounding the drain (1) has dropped to the level of the control passage (7), air from areas (8) outside the float chamber (6) into the float chamber (6) can occur, so that the pressure conditions between the float chamber (6) and the areas (8) outside the float chamber (6) are compensated, wherein the float (5) with the valve body (2) at Compensation of the pressure conditions from the scavenge to the rest position is movable,

wherein the float chamber (6) has a base portion (9) extending completely around the central axis (M) and a snorkelling portion (10) adjoining the base portion (9),

characterized,

that the cross section of the snorkel section (10), viewed transversely to the central axis (M), is smaller than the cross section of the base section (9), and

in that the float has a lower portion (29) from which a column section (1 1) extends, the float (5) with the column section (11) extending into the snorkel section (10).

2. drain fitting (1) according to claim 1, characterized in that the float (5), in particular the lower portion (29) and the column portion (1 1) are formed closed at the top; and / or that the lower portion (29) is formed open or closed at the bottom.

3. drain fitting according to one of the preceding claims, characterized in that the valve body (2) further comprises an overflow pipe (33), wherein the float (5) with the column section (1 1) and the lower portion (29) on the outside around the Extend overflow pipe (33), in particular such that the overflow pipe (33) extends centrally through the float (5), so that the column section (1 1) and the lower portion (29) have the cross section of a cylinder ring; and wherein the float (5) is preferably formed on the overflow pipe (33).

4. waste fitting according to claim 3, characterized in that the overflow tube projects beyond the top of the column section (11).

5. drain assembly (1) according to any one of the preceding claims, characterized in that the snorkel section (10) extends substantially concentric with the base portion (9) and / or that the column portion (1 1) substantially concentric with the lower portion (29 ).

6. Ablaufgamitur (1) according to any one of the preceding claims, characterized in that the snorkel portion (10) and the base portion (9) extend completely around the central axis (M) around and preferably each have substantially constant diameter;

and / or that the column section (11) and the lower section (29) extend completely around the central axis (M) and preferably have substantially constant diameters in each case.

7. drain assembly (1) according to any one of the preceding claims, characterized in that the transition (30) between the snorkel section (10) and base portion (9) is conical.

8. waste fitting (1) according to one of the preceding claims, characterized

that the height (H9) of the base portion (9) in the direction of the central axis (M) is substantially smaller than the height (H10) of the snorkel portion (10), wherein the height (H9) of the base portion (9) is preferably between 5% and 20% of the height (H) of the entire float chamber (6)

and / or that the height (H29) of the lower section (29) in the direction of the central axis (M) is substantially smaller than the height (Hl) of the column section (11), the height (H29) of the lower section (29 ) is preferably between 5% and 20% of the height (H) of the entire float (5).

9. drain fitting (1) according to any one of the preceding claims, characterized in that the float chamber (6), apart from the at least one control passage (7), to an end wall (19) is formed laterally completely closed.

10. waste fitting (1) according to any one of the preceding claims, characterized in that above the float chamber (6) a water reservoir (31) is present, which opens with a passage (32) in the float chamber (6), wherein through the passage ( 32) water, which is located in the water tank (31), can flow into the float chamber (6).

1 1. drain fitting (1) according to any one of the preceding claims, characterized in that the lower portion (29) of the float (5) in the scavenging position substantially completely in the float chamber (6) and / or that the sealing element (4) of the valve body in the flushing position is substantially completely in the float chamber (6).

12. drain fitting (1) according to one of the preceding claims, characterized

that the column section (11) in cross section transversely to the central axis (M), the cross section of the snorkel section (10) substantially completely or at least 55%, in particular at least 75% fills and / or the column section (11) fills the volume of the snorkel section (10) substantially completely or at least 55% or at least 90% when the float is in the flushing position.

13. Drain assembly (1) according to any one of the preceding claims, characterized in that the control passage (7) for the initiation of a first flushing with a first flushing amount is formed and that the drain assembly (1) further comprises a control unit (12) for the control a second flushing volume, wherein the control unit (12) provides a closing force (F) on the valve body (2) upon reaching a water level provided for the second flushing volume with a closing weight (13), the closing force (F) or the closing weight ( 13) via a scarf torgan (14) of the control unit (12) on the valve body (2) can be switched on.

14. drain fitting (1) according to claim 13, characterized in that the switching member (14) when lifting the control unit (12) automatically with the valve body (2) engages a latching connection and / or that the altitude of the closing weight (13) over an adjustment range (15) is adjustable.

15. Drain fitting (1) according to one of the preceding claims 13 to 14, characterized

that the first purge is a full flush and that the second purge is a partial purge; or

that the first rinse is a partial flush and that the second rinse is a full flush.

16. drain fitting (1) according to any one of the preceding claims, characterized in that a plurality of control passages (7) are arranged at different altitudes, wherein the drain fitting (1) further comprises at least one closure element (16), with which one of the control passages (7) releasable and the other of the control passages (7) are lockable,

wherein preferably at least one of the control passages (7) is arranged in the snorkel section (10), and wherein the optional others of the control passages (7) in the snorkel section (10) and / or in the base section (9) are arranged.

17. pop-up waste (1) according to claim 13 to 17, characterized in that the adjustment range (15) of the closing weight (13) in its height extends at least to below the uppermost control passage (7).