RU2293820C2 - Method and device for leak elimination in cutoff-and-starting unit of water intake tap - Google Patents

Abstract

FIELD: sanitary maintenance facilities for water supply systems in residential and other buildings.

SUBSTANCE: device is arranged in water intake tap body having smooth inner cylindrical section, threaded seating socket to secure valve with cutoff-and-starting slide and sealing pack. Tap body also has annular collar enclosing water inlet orifice and water discharge channel. Inner cylindrical section, threaded seating socket and annular collar are coaxial with each other. Device is made as metal-cutting tool comprising spindle with metal-cutting head adapted to cut faulty metal layer from annular collar end. Metal-cutting head diameter exceeds that of annular collar. Spindle consists of cylindrical section provided with cavity and tail to be connected with driving means. The spindle is installed in the body, may slide in axial direction and perform reversible rotation. Metal-cutting head is secured inside spindle cavity so that flat end surface of metal-cutting head is transversal to cylindrical spindle section. Outer cylindrical surface and spindle cavity are coaxial to smooth inner cylindrical section, threaded seating socket and annular collar of tap body. Cylindrical spindle section is made as cup with cylindrical or conical surface of the cavity. Spindle is installed in tap body in spaced-apart relation between cylindrical spindle section, smooth inner cylindrical section and threaded seating socket of tap body so that space not exceeding 0.1 mm is created in-between. Method of leak elimination with the use of above device is also disclosed.

EFFECT: extended range of sanitary maintenance facilities, simplified structure and increased usage convenience.

9 cl, 9 dwg

Description

The invention relates to plumbing highly effective repair and maintenance equipment in the water supply systems of residential and other buildings.

Loss of tightness in the start-up nodes of water taps and water supply valves in water supply systems presents an acute problem with such, in particular, consequences, such as:

- there are (nationwide) colossal mismanagement of water, causing great economic damage, especially to regions with a shortage of water resources;

- inconvenience, moral suffering, additional expenses for residents of high-rise buildings in cases where, for example, in one of the apartments it is necessary to replace the sealing gaskets of shut-off valves, and the valves installed inside the apartment do not provide complete shut-off of the water supply through the water supply (especially hot water) , at the same time you have to seek the help of special services and resort to shutting off the water supply throughout the common house riser-water supply system, which entails shutting off the water supply to all other residents, live on other floors, and such events are almost emergency (unexpected), and for many residents it is: interrupted scheduled activities, deterioration of linen when washing with dirty water coming after the repair.

The present inventions are dedicated to solving this problem. Many well-known inventions are aimed at solving the above problem by improving water taps and their individual components, however, their service life (durability) is limited by the physicochemical properties of the alloys (bronzes, brass) of which they are made, manufacturing technology and operating conditions; Among such well-known inventions, I note the following:

- Autosvid. USSR 484353, Water taps with automatic locking, F 16 K 1/00, publ. 09/15/75, Bull. 34 [1];

- Autosvid. USSR 996782, Fine adjustment valve, F 16 K 1/00, publ. 02/15/83, Bull. 6 [2];

- Autosvid. USSR 1733792, Water-saving tap "economy", F 16 K 1/00, E 03 C 1/04, publ. 05/15/92, Bull. 18 [3].

Technical solutions are known from the prior art (a method for eliminating a leak in a start-up assembly of a water-folding tap and a device for its implementation), which include removing the valve from the threaded seat of the valve body, replacing the sealing gasket in the shut-off valve, and installing a metal-cutting tool that is precisely oriented relative to the contact surface of the ring end face collar, one-time complete removal-cutting by milling an annular collar encircling the water inlet until a flat surface is obtained in the partition wall in contact with the sealing gasket of the shutoff valve oriented perpendicular to the axis of the cylindrical body of the water taps, modernization (replacement) of the shutoff valve of the valve, subsequent fastening of the valve and pressing the sealing gasket of another, new, modernized shutoff valve to the end of the annular flange surrounding the water inlet (see Chuprakov Yu.I. Repair and modernization of water folding fittings. M .: Stroyizdat, 1990, p. 53-56, 66-85) [4].

A significant drawback of these well-known technical solutions [4] is that in this case one-off cutting of not only defective metal layers is performed, but also of the healthy, high-quality remaining part of the annular collar, and this entails thinning, a decrease in the thickness of the partition wall of the body of the intake valve, resulting in to reduce the service life of existing, operated water taps for many years or even damage them due to the possible milling of the thin partition wall through (p. 74).

In addition, the modernization (design change) of the gate valves of the valves in existing, operated water taps necessarily entails the complication, appreciation, increase in the duration of the repair, as well as the inability to quickly eliminate the leak due to the lack of necessary technical means for this.

The prototypes, that is, the closest analogues to the described inventions in terms of essential features, are the well-known "Method of eliminating a leaking tap and device for its implementation" described in the application for inventions No. 2003126430/03 (RF patent No. 2265108, published November 27, 2005, Bull. No. 33) [5], the essence of which is as follows.

A method for eliminating leaking water tap leakage includes removing the valve from the threaded seat of the valve body, replacing the gasket in the start-up valve, installing a metal-cutting tool that is precisely oriented relative to the contact surface of the end of the annular collar, then securing the valve, pressing the sealing gasket of the shut-off valve to the end of the annular collar, water inlet, and before subsequent fastening of the valve produce a short fixing the guide pipe in the mounting threaded socket of the crane body, then install the specified tool precisely oriented relative to the contacting surfaces of the guide pipe inward, perform the indicated removal of defective metal layers so that the newly formed end surface of the annular collar in contact with the sealing gasket of the shut-off valve is oriented perpendicularly the inner cylindrical surface of the guide pipe, after which yayuschy nozzle is removed from the planting of the threaded socket of the valve body.

A device for eliminating leakage of a water taps includes a body of a water taps with a threaded seat for securing the valve, with an annular collar encircling the water inlet, with a water outlet when the landing threaded socket and the annular collar are aligned, a short-term fixed guide pipe installed inside with fixed axial and reverse rotation, a spindle consisting of a cylindrical part in contact with the inner cylindrical surface with a guide pipe, a metal cutting head to remove a defective metal layer from the end of the annular collar, the end part together with a movable axial displacement limiter of the spindle and shank fixed to it for connection to the drive devices, while the diameter of the metal cutting head is larger than the outer diameter of the annular collar, the end surface of the metal cutting the head is oriented perpendicular to the cylindrical part of the spindle, and the end part of the spindle is made in the form of a cylinder with together with a fixed spindle axial displacement limiter, which is a special nut having a through radial threaded hole with a locking screw installed in it, interacting with the cylinder thread, while the end flat surfaces of the special nut are perpendicular to the spindle axis.

The disadvantages of the known inventions [5] are: the presence of a guide pipe and the execution (during repair) of operations to secure the guide pipe in a threaded seat of a body of a taps or a water supply valve and the subsequent removal of said guide pipe from a threaded seat of a body of a taps or water pipe.

The most important task of the described inventions is to simplify the repair device, simplify the repair process, as well as expand the arsenal and range of highly efficient plumbing repair and maintenance equipment, allowing repair and maintenance services and the public to be able to choose the most suitable means to eliminate water leakage in the start-up nodes of any types of operating water taps and valves of water pipes of this class (without changing their designs) in each specific joint venture in specific circumstances, cases, including in view of their own production and technical capabilities.

The specified task (simplification of the device, the repair process, as well as the expansion of the arsenal and range of highly efficient plumbing repair and maintenance equipment to eliminate water leakage in the start-up nodes of any types of operated taps and water supply valves without changing their designs) is solved by the described inventions due to a new set of essential signs, namely due to the fact that:

A device for eliminating a leak in the start-up assembly of a water-lifting tap when eliminating a leak, placed in the body of a water-folding tap, made with an internal smooth-surface cylindrical part, with a threaded seat for securing a valve with a shut-off valve and a sealing gasket, with an annular water outlet with a ring bore and a ring shoulder with the alignment of the inner smooth surface cylindrical part, the mounting threaded socket and the annular flange, and represent it is a metal cutting tool in the form of a spindle with a metal cutting head to remove a defective metal layer from the end of the annular collar, the diameter of which is larger than the outer diameter of the annular collar, while the spindle consists of a cylindrical part with a cavity and a shank for attachment to the drive device and is installed in the housing with the possibility axial movement and reverse rotation, and the metal cutting head is fixed in the cavity of the cylindrical part of the spindle so that its end flat surface is oriented perpendicular to the cylindrical part of the spindle, the outer cylindrical surface and the spindle cavity being aligned with the inner smooth surface cylindrical part, the threaded seat and the annular shoulder of the crane body, the cylindrical part of the spindle being made in the form of a glass with a cylindrical or conical surface of the cavity, while the spindle is mounted in the crane body with a gap of not more than 0.1 mm between the cylindrical part of the spindle and the inner smooth surface cylindrical part and the fitting thread vyh nest of the crane body, while: the cavity of the glass, designed to secure the metal cutting head in it, is made in the form of a straight circular cylinder or a truncated straight circular cone;

- when performing the surface of the cavity of the glass cylindrical as a metal cutting head used abrasive grinding tool in the form of a straight circular cylinder;

- as a metal cutting head, a metal-cutting tool is used in the form of an end drill or an end mill;

- when performing the surface of the cylindrical glass cavity as a metal cutting head, a straight circular cylinder made of ceramics, cermets, bricks, cement or solid minerals is used;

- the metal cutting tool is equipped with a screw, the spindle is made with a through axial threaded hole, and the metal cutting head with a through axial bore, through which it is connected to the spindle with a screw screwed into the through axial threaded hole of the spindle;

- the metal cutting head is integral and into the through axial threaded hole made in the bottom-tail part of the spindle cup, a pusher is inserted for a short time with the possibility of transmitting the buoyant force to the metal cutting head in the process of removing it from the inner cavity of the spindle cup.

A method for eliminating a leak in the start-up assembly of the water-folding tap using any of the above devices, characterized in that it includes removing the valve from the threaded seat of the body of the water-folding tap, replacing the gasket in the shut-off valve, installing a metal-cutting tool in the water-folding tap, removing defective metal layers from the end of the annular flange with the formation of the end surface perpendicular to the inner smooth surface of the cylindrical part and fit the threaded housing of the tap body, subsequently remove the metal-cutting tool from the tap body, secure the valve in the fit threaded socket of the tap body and press the sealing gasket of the shut-off valve to the end of the annular collar encircling the water inlet, while removing the defective layers of the collar metal from the end by preliminary, rough removal of defective metal layers and subsequent fine, fine-tuning.

The essence of the group of inventions is disclosed in more detail from the following description using the drawings, which depict the following:

- figure 1: longitudinally axial section of the end part of the casing in the working position (complete with valve), when there is a leak of water due to loss of tightness;

- figure 2: longitudinally-axial section of the end part of the body of the taps in disassembled form, when the valve is removed from the mounting threaded socket;

- figure 3: longitudinally axial section of the spindle assembly to remove defective layers of metal from the end of the annular collar encircling the water inlet (option when the metal cutting head with a through axial hole is fixed with a screw in the inner cylindrical cavity of the glass having a length of approximately equal to half the length of the outer cylindrical surface of the glass);

- figure 4: the same as in figure 3 (option, when the length of the inner cylindrical cavity is approximately 0.85 of the length of the outer cylindrical surface of the glass);

- figure 5: version of the spindle when the cutting head is solid (without a through axial hole) when disassembling the spindle is removed from the inner cylindrical cavity of the glass using the ejector;

- in Fig.6: a longitudinal-axial section of the end part of the casing together with the spindle installed in Fig.3 (prepared to start removing defective metal layers from the end of the annular collar encircling the water inlet);

- in Fig.7: a longitudinal-axial section of the end part of the casing together with the spindle installed in Fig.3 (at the final stage of removing defective metal layers from the end of the annular collar encircling the water inlet);

- Fig. 8: longitudinally axial section of the end part of the body of the taps after removing defective metal layers from the end of the annular collar encircling the water inlet;

- figure 9: longitudinally axial section of the end part of the body of the crane after removing the defective layers of metal from the end of the annular collar surrounding the water inlet, together with a newly fixed valve with a replaced sealing gasket (water leak eliminated).

In the process of operating water taps, the most vulnerable parts, elements and assemblies that are most affected by corrosion, physical and mechanical stress are the primary wear.

In the casing 1 of the taps, the most wearing place is an annular collar 2, encircling the water inlet 3, on the side of the surfaces in contact with the sealing gasket 4 of the valve 5 shutoff valve, due to the fact that this place experiences complex loads, namely, corrosion for constant contact with moisture and the atmosphere; erosion takes place - destruction by dirty water jets after accidents, repairs, when water flows with rust from pipelines are an abrasive medium (pulp), impact of water hammer and cavitation, plus frequent mechanical abrasion from the sealing strip 4 when opening - closing the water inlet 3 with abrasive particles deposited on its surfaces; and in the valve 5, the most intensive wear is subject to the sealing gasket 4 (Fig. 1).

It should be emphasized that the wear of individual elements, parts and assemblies is not uniform, but dispersed over the most vulnerable areas due to the heterogeneity of alloys with defects such as slag inclusions, oxide films, gas shells and the presence of micro-shells on the surfaces , grooves due to manufacturing technology (casting, stamping, machining, and so on).

The prevention of water leakage due to the sealing gasket 4 is eliminated by replacing the latter with a new one and does not cause any problems (neither economic nor operational), since the cost of the gaskets is minimal, and the replacement process is simple and short-lived.

The maximum problems arise when water leaks due to wear of the annular collar 2, when defects form in the form of irregularities, cracks, grooves 6 through which water seeps and flows out through the outlet channel 7 on the end surface in contact with the sealing gasket 4, while negative relief defective prints on the surfaces of the sealing gasket are shifted relative to the positive relief defective spots on the surfaces of the annular collar with each subsequent openings - closed ia and therefore it is very often necessary to replace the gaskets and make great efforts to the handle 8 to provide the necessary increasing forces of pressing the sealing gasket to the end of the annular collar, which leads to accelerated wear of the power thread of the locking mechanism and the handle itself, as a result of which, ultimately, there is such a degree of wear that it is no longer possible to prevent water leakage by any means, even by installing a new valve 5 (Fig. 1).

To eliminate water leakage due to wear of the end face of the annular collar 2, the valve 5 is removed from the mounting threaded socket 9 of the body 1 of the water taps and the sealing gasket 4 in the start-up valve is replaced (replacement of the sealing gasket is mandatory, as the one that was in use has embossed prints of worn surfaces of the annular end flange and for further use is unsuitable) (figure 1, 2).

To remove the defective metal layers from the end face 10 of the annular collar 2, a prefabricated special metal-cutting tool is used, which is a spindle 11, consisting of a cylindrical part made in the form of a glass 12 with a shank 13 for connecting to the drive devices, a metal-cutting head 14 for removing the defective metal layer from the end 10 of the annular flange 2 (Fig.2-5).

The outer cylindrical surface 15 of the glass 12 is precisely oriented relative to the contacting cylindrical surfaces of the valve body, namely, relative to the surface 16 of the inner smooth surface of the cylindrical part and relative to the surface 17 of the mounting threaded socket 9, while to ensure the specified exact orientation, it is necessary that the gaps between said contacting surfaces 15 , 16 and 17 amounted to a value of not more than 0.1 mm (figure 2, 3).

The internal cavity 18 of the glass 12 (figure 5), designed to fix the metal cutting head 14 in it, it is advisable to perform in the form of a direct circular cylinder or a straight circular cone when they are aligned with the outer cylindrical surface 15 (as an example in the drawings of figures 3-7 the inner cavity 18 is made in the form of a straight round cylinder), while the length L of the inner cavity 18 is set taking into account the length of the fixed head 14.

The metal cutting head 14 is fixed inside the glass 12, namely in its inner cavity 18 so that its end flat surface 19 is oriented perpendicular to the outer cylindrical surface 15 of the glass 12, while the outer cylindrical surface 15 and the inner cylindrical or conical surface of the cavity 18 of the glass 12 are coaxial smooth surface of the cylindrical part, the mounting threaded socket 9 and the annular flange 2 of the housing of the crane 1, and the outer diameter d _{1 of the} metal cutting head 14 is larger than the outer diameter d ₂ annular flange 2 encircling the water inlet 3 (Fig.2-5).

In the drawings (Figs. 3-7), an embodiment of the use of an abrasive tool in the form of a circular circular straight cylinder is shown as a metal cutting head 14, however, it should be borne in mind that other numerous metal cutting tools such as end countersinks, end mills can be used as a metal cutting head.

As the cutting head 14, circular straight cylinders of ceramics, cermets, bricks, solid minerals, cement are applicable.

The spindle 11 may have various layout designs, in particular when all its elements: a glass 12 with a shank 13, a metal cutting head 14 are made in the form of separate easily assembled and easily detachable parts or modules, for example, using threaded connections (Fig.3-7 )

In the drawings (Figs. 3, 4, 6, 7), an example of a spindle 11 is shown as an example when the metal cutting head 14 has a through axial hole through which it is connected to the glass 12 with a screw 20 screwed into the through axial threaded hole 21, made in the bottom of the tail of the glass 12.

In the drawing (FIG. 5), an example of a spindle 11 is shown as an example, when the metal cutting head 14 is integral (without a through axial hole) and a pusher 22 with a transmission possibility is introduced briefly into the through axial threaded hole 21 made in the bottom-tail part of the glass 12, ( impact) of the buoyant force on the metal-cutting head 14 in the process of removing it from the inner cavity 18 of the glass 12, which ensures the ease and speed of disassembly of the spindle 11 in cases, for example, operational production Twa repair or replacement metal cutting head 14.

To remove a defective layer of metal of thickness S from the end face 10 of the annular collar 2 encircling the water inlet 3 (Fig. 2), the spindle 11 (Fig. 3) is introduced into the body of the water taps 1 until the end surface 19 of the metal cutting head 14 contacts the end face 10 of the annular bead 2 (Fig.6).

The process of removing a defective layer of metal of thickness S is carried out by communicating rotation to the spindle 11 while simultaneously pressing the metal cutting head 14 against the end face 10 of the annular collar 2, and it is advisable to carry out the process in several passes, periodically removing the spindle 11 from the body 1 of the water taps for quality control and evaluation visual inspection.

The removal of a defective metal layer of thickness S from the end face 10 of the annular collar 2 can be performed by preliminary, rough removal of the metal layer, for example, using coarse-grained emery grinding heads and subsequent fine finishing of fine-grained emery sanding heads.

It should be borne in mind that the wall thickness of the annular collar 2 from the side of the end face 10 can be only 1-2 mm, and therefore it is necessary to exert minimal efforts to compress the spindle 11 during the removal - removal of defective metal layers.

As drive devices attached to the shank 13 of the spindle 11 are suitable, for example, drills with electric and mechanical drives, wrenches, rotations, clamping chucks (in Fig.6, 7 the connection of the drive devices to the shank 13 is not shown).

After removing the defective metal layer of thickness S (Fig. 7), the spindle 11 is removed from the body 1 of the taps, as a result of which a new end surface 23 is formed in the annular flange 2, oriented perpendicular to the inner cylindrical surfaces of the housing 1, namely, the surface 16 of the inner smooth surface cylindrical parts and surfaces 17 of the mounting threaded socket 9 (Fig. 8).

Then the casing 1 of the taps is cleaned of small chips, for example, by rinsing with water, and the valve 5 is again fixed in the mounting threaded socket 9 of the repaired casing 1 of the taps, press the sealing gasket 4 to the end of the annular collar 2 and resume the water supply through the pipeline, then there is a water-folding valve in its normal working condition, while the water flow is eliminated due to the tight, reliable fit of the contacting end surfaces of the sealing ring adki 4 and annular shoulder 2 (Fig.9).

It must be emphasized here that a tight, reliable fit to each other of the end contacting surfaces of the annular collar 2 and the sealing gasket 4 with the minimum required pressing forces (after removing the defective metal layer from the end of the annular collar) is ensured, achieved automatically due to the structural and technical parameters described above inventions.

The author conducted a practical test of the effectiveness of the described inventions, while using the following designs of water taps, tools and fixtures:

1. Water taps as part of bath and kitchen faucets (products of Motovilikhinsky Plumbing Plant, Perm), having the following parameters:

1.1. Type of mounting threaded socket for securing valves: M 18 × 1;

1.2. The outer diameters d _{2 of the} annular flange 2 encircling the water inlet are: minimum - 12 mm, maximum - 14 mm;

1.3. The wall thickness of the annular flanges 2 is 1-2.5 mm;

2. The gaps between the outer cylindrical surface 15 of the glass 12 and the inner surfaces 16, 17 of the housing 1 of the taps in contact with each other were approximately 0.05 mm;

3. As a metal cutting head 14, cylindrical emery grinding heads with external diameters d ₁ = 15 mm were used to remove defective metal layers from the ends of the annular beads;

4. As a drive device for the spindle 11 was used a drill with a mechanical drive, a chuck;

5. Condition of water taps (there was a water leak even with new sealing rubber gaskets and reinforced clamping by valve handles).

After removal of the defective metal layers from the ends of the annular collars 2, the water flow stops even with normal, moderate clamping by the valve handles, and the thickness of the removed defective metal layers is about 0.3 mm, which can significantly increase the service life of water taps without resorting to improving their design .

The removal of defective layers of metal from the ends of the annular beads was carried out at the places of their operation (that is, without disconnecting the water taps from the water pipes), and resorting only to stopping the water supply by using the shut-off valves available in each apartment.

The described inventions provide prompt (instant) highly effective elimination of water leakage, a significant increase in the service life of water taps, significant savings in water resources and money, are simple in design and convenient for practical use.

It is advisable to remove defective metal layers from the ends of the annular collars (layer thickness of the order of 0.05-0.1 mm) for preventive purposes (without waiting for a water leak), moreover, even when installing new water taps, as this is automatically eliminated possible hidden manufacturing defects.

Since the water supply valves and the described water taps have a fundamentally identical structural design, the data of the invention are also applicable to the repair of water supply valves.

Claims (9)

1. Device for eliminating a leak in the start-up assembly of a water-folding tap, when eliminating a leak, it is placed in the body of a water-folding tap made with an internal smooth-surface cylindrical part, with a threaded seat for securing a valve with a shut-off valve and a sealing gasket, with an annular collar and a ring collar with water outlet with the alignment of the inner smooth surface of the cylindrical part, the threaded seat and the annular collar, I represent it is a metal cutting tool in the form of a spindle with a metal cutting head to remove a defective metal layer from the end of the annular collar, the diameter of which is larger than the outer diameter of the annular collar, while the spindle consists of a cylindrical part with a cavity and a shank for attachment to the drive device and is installed in the housing with the possibility axial movement and reverse rotation, and the metal cutting head is fixed in the cavity of the cylindrical part of the spindle so that its end flat surface is oriented perpendicular to the cylindrical part of the spindle, the outer cylindrical surface and the spindle cavity being aligned with the inner smooth surface cylindrical part, the threaded seat and the annular shoulder of the crane body, characterized in that the cylindrical part of the spindle is made in the form of a glass with a cylindrical or conical surface of the cavity, the spindle being mounted in the crane body with a gap of not more than 0.1 mm between the cylindrical part of the spindle and the inner smooth surface cylindrical part and with a threaded socket on the crane body. 2. The device according to claim 1, characterized in that the cavity of the glass, designed to secure the metal cutting head in it, is made in the form of a straight circular cylinder or a truncated straight circular cone. 3. The device according to claim 1, characterized in that when performing the surface of the cavity of the glass cylindrical as a metal cutting head used abrasive grinding tool in the form of a straight circular cylinder. 4. The device according to claim 1, characterized in that a metal cutting tool in the form of a face drill or an end mill is used as a metal cutting head. 5. The device according to claim 1, characterized in that when performing the surface of the cavity of the glass cylindrical as a metal cutting head, a straight circular cylinder made of ceramic, cermet, brick, cement or solid minerals is used. 6. The device according to claim 1, characterized in that the metal cutting tool is equipped with a screw, the spindle is made with a through axial threaded hole, and the metal cutting head is made with a through axial bore, through which it is connected to the spindle with a screw screwed into the through axial threaded hole spindle. 7. The device according to claim 1, characterized in that the metal cutting head is integral and into the through axial threaded hole made in the bottom-tail part of the spindle cup, a pusher is inserted for a short time with the possibility of transmitting the buoyant force to the metal cutting head in the process of removing it from the inner cavity of the spindle cup. 8. A method for eliminating a leak in the start-up assembly of the water-folding tap using the device according to any one of claims 1 to 7, characterized in that it includes removing the valve from the threaded seat of the body of the water-folding tap, replacing the sealing gasket in the shut-off valve, installing a metal-cutting tool in the housing tap, removal of defective metal layers from the end of the annular collar with the formation of the end surface perpendicular to the inner smooth surface of the cylindrical part and zling threaded socket of the valve body, then removing the cutting tool from the housing at the tap, a valve in the bearing securing the threaded socket at the tap body and pressing the gasket puskozapornogo valve to the end face of the annular bead encircling the water inlet opening. 9. The method according to claim 8, characterized in that the removal of defective metal layers from the end face of the annular flange is performed by preliminary, rough removal of the defective metal layers and subsequent fine finishing.

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