Filling float-valve

FIELD: machine building.

SUBSTANCE: present invention pertains to hydro-automation, particularly to hydraulic inlet valves with dosed supply of liquid into a filling tank, and is meant for use in systems for filling different types of reservoir with water. The filling float-valve has housing with an inlet, an outlet opening and a seat inside the housing in form of a nozzle, a gate opposite the seat, in form of an elastic membrane with thickening in the area where it is in contact with the seat. The axially moveable coupling of the gate is on an arm support. The arm support is fixed against the housing using a cap nut and is kinematically linked to the float through a lever and a tie-rod. The float is fitted with provision for vertical displacement. The perimeter of the membrane is pressed into the housing by the arm support with a cap nut, forming a cavity in the housing on the side of the seat. The cavity is linked to the outlet opening and, through the nozzle, to the inlet. There is a cavity on the arm support above the membrane. This cavity is linked to the cavity in the housing through at least one opening on the membrane. The coupling rod is pressed against the arm support using stocking type sealing rings. Inside the cavity in the housing, on the side of the seat, an encircling seat is fitted, forming an annular gap, as well as a throttle insertion which is in form of a cup. A bypass hole is made at the bottom of the latter. The perimeter of the membrane is pressed between the bottom of the cup and the arm support. An outlet opening is made in the side wall of the cup. On the inner wall of the cup and the outer side surface of the seat there are radial ribs with formation by the latter in the annular gap, a labyrinth in the cross-section of the throttling channel.

EFFECT: increased reliability and easier operation of a filling float-valve.

4 dwg

 

The invention relates to hydro, in particular to a hydraulic inlet valve for the metered supply of fluid in the fill capacity, and can be used in systems filling with water of various kinds of containers.

Known filling float valve, comprising a housing with a vertical suction inlet, outlet and a conical seat inside the housing, opposite the saddle locking element made in the form of an elastic membrane with a thickness in the zone of interaction with a saddle movable in the axial direction of the shaft of the locking element is placed in the bracket, which is fixed relative to the housing by means of nut and kinematically connected by means of a lever with a float located with the possibility of vertical travel in the glass, the latter is mounted for adjustment of the vertical location relative to the hull, and the bottom of the nozzle hole, which is equipped with a float valve to the internal cavity of the message Cup fill capacity when the discharge from the last fluid (see application of the Netherlands 7009447, CL F16K 31/26, 29.12.1970).

This filling valve is used to maintain a fixed level of liquid in the filled container. However, this valve does not allow you to adjust the position of the Pople who wka, that narrows the filling valve.

Closest to the invention to the technical essence and the achieved result is filling float valve, comprising a housing with a vertical suction inlet, outlet and seat inside the housing, opposite the saddle locking element made in the form of an elastic membrane with a thickness in the zone of interaction with a saddle movable in the axial direction of the shaft of the locking element is placed in the bracket, which is fixed relative to the housing by means of nut and kinematically connected by means of a lever and rod with a float located with the possibility of vertical travel, and the membrane around the perimeter clamped in the housing by a bracket with locking nut with education in the housing with side saddle cavity communicated with the outlet and across the saddle with a vertical inlet pipe (see patent RU No. 2248489, CL F16K 31/24, 20.03.2005).

This filling float valve allows you to adjust and maintain the desired level of liquid in the filled container. However, sealed membrane relatively large area requires a float is big enough to create the necessary efforts to overlap the outlet nozzle. In addition, d is nom valve there are no options to reduce the noise level when filling containers with liquid, most often water.

The objective of the invention is the reduction of effort required to overlap the output section of the nozzle when filling containers with liquid and the reduction of noise at work filling float valve.

The technical result consists in increasing the reliability and comfort of the filling float valve.

This problem is solved and the technical result is achieved due to the fact that filling the float valve includes a housing with a suction inlet, outlet and is designed as a nozzle seat inside the housing, opposite the saddle locking element made in the form of an elastic membrane with a thickness in the zone of interaction with a saddle movable in the axial direction of the shaft of the locking element is placed in the bracket, which is fixed relative to the housing by means of nut and kinematically connected by means of a lever and rod with a float located with the possibility of vertical travel, and the membrane around the perimeter clamped in the housing by a bracket with locking nut with education in the housing side saddle cavity communicated with the outlet and across the saddle to the inlet side, the bracket over the membrane is made chamber which is communicated through is made in the membrane, at the very the least, one hole with a cavity in the housing, the stem is sealed with respect to the bracket using the cuff stocking type and is made in the body cavity from the side of the saddle is installed covering the saddle with the formation of the annular gap and is made in the form of glass throttling insert in the bottom of which is made the bypass hole, the membrane around the perimeter is sandwiched between the bottom of the Cup and the bracket, the side wall of the nozzle outlet, and on the inner wall of the Cup and the outer side surface of the saddle is made of radial longitudinal ribs with the formation of the latter in the annular gap of the labyrinth in the cross section of the throttling channel.

Performance analysis of different structures of the filling valves has shown that it is possible to reduce the necessary effort, which should create a float shut-off element in the overlap of the saddle. For this purpose, the bracket over the membrane is made chamber which is communicated through is made in the membrane, at least one hole with a cavity in the housing, the stem is sealed with respect to the bracket using the cuff stocking type. As a result, dramatically reduces the surface area on the influence of flowing under pressure from made in the form of a nozzle seat, the fluid, which leads to the fact that the rod acts much is considerable smaller axial force, consequently, the float you need to create a smaller axial force on the rod, so that he could overcome generated flowing from the seat jet of fluid pressure and to shut off the saddle by pressing to his the outlet is made of elastic material membrane.

Additional performance opportunities valve provided at the expense of the possibility of reducing the level of noise during operation of the filling float valve. This noise high frequency and has a cavitation nature. In this case, does not help even the installation of anti-noise tube. The main source of cavitation noise is in the vicinity of the end in the form of a nozzle seat. In the place of greatest compression of the jet due to the pressure drop to a value when the water boils, rapid providentia. Getting further downstream in the region with higher pressure equal to atmospheric vapor bubbles with noise klapivad. Thus at the point of collapse, the temperature rises up to 1400 degrees. Therefore, if the collapse of steam bubbles occurs near any of the surfaces, these surfaces are intensively destroyed. Installation in the cavity around the saddle of the hydraulic resistance in the form of a throttling insert leads to increased pressure in the area of the outlet cross section of the saddle, which penetrates into the region of the jet, in which the liquid is should simmer. As a result of increasing pressure in the cavity around the seat the conditions to prevent vaporization in the liquid stream flowing from the saddle. Therefore, there are no reasons for the occurrence of cavitation processes, including cavitation noise. In addition, to prevent damage to the items of equipment in areas of the collapse of cavitation bubbles and, consequently, increases reliability of the filling float valve.

Figure 1 presents a General view of the filling float valve.

Figure 2 shows a longitudinal section of the described filling float valve.

Figure 3 presents the cross-section a-a in figure 2.

4 shows the section b-b In figure 2.

Filling the float valve includes a housing 1 with an inlet pipe 2, the outlet opening 3 (see figure 4) and is designed as a nozzle seat 4 within the housing 1 opposite the seat 4 closing element made in the form of an elastic membrane 5 with a thickening in the zone of interaction with the saddle 4, movable in the axial direction of the shaft 6 of the locking element is placed in the bracket 7, which is fixed relative to the housing 1 by means of the Union nut 8 and is kinematically connected by means of the lever 9 and rod 10 with the float 11, located with the possibility of vertical travel. IU the bran 5 perimeter clamped in the housing 1 by means of bracket 7 with locking nut 8 with the formation of the housing 1 from the side of the seat 4 of the cavity 12, communicated with the outlet 3 and through the seat 4 to the inlet side 2. The bracket 7 on the membrane 5 is made of the cavity 13, which is communicated through is made in the membrane 5, at least one hole 14 with a cavity 12 in the housing 1. The rod 6 is sealed with respect to the bracket 7 by using the cuff 15 stocking type and is made in the housing 1 of the cavity 12 from the side of the seat 4 is installed covering the seat 4 with the formation of the annular gap and is made in the form of glass throttling insert 16, a bottom 17 which is made the bypass hole 18 (see figure 3). The membrane 5 on the perimeter is sandwiched between the bottom 17 of the Cup and the bracket 7. In the side wall of the nozzle outlet 19 (see figure 4), and on the inner wall of the Cup and the outer side surface of the seat 4 is made of radial longitudinal ribs 20 with the formation of the latter in the annular gap of the labyrinth in the cross section of the throttling channel.

Filling the float valve operates as follows.

In the initial position, when filled with liquid medium, for example water, the tank is empty, the float is in its lower position, and the rod 6 is in the upper extreme position, the seat 4 of the housing 1 is open for admission of fluid in fill its container (not shown). On the inlet pipe 2 liquid medium through the saddle 4 is supplied into the cavity 12 and into the cavity 13 through a throttling insert 16 and outlet port 3 goes to fill liquid medium capacity. As the filling capacity increases the level of the liquid and when the liquid reaches the float 11 recent rises, which causes through the rod 10 of the lever 9. Last, revolving around the axis 21, causes movement of the rod 6 in the direction of the saddle 4. The rod 6 presses on the membrane 5 and the latter gradually, as the buoyancy of the float 11 is moved to its thickened area of the seat 4 and eventually when the liquid reaches the maximum level in the tank closes the exit seat 4 liquid filled in the container.

When emptying the float 11 is lowered, which causes a reverse movement of the lever 9 to its original position. As a consequence, the lever 9 is rotated in the opposite direction and acting on the other wall of the recess 22 of the piston rod 6, removes him from the saddle 4. Under the pressure of the liquid medium under the action of the internal forces of the elastic diaphragm 5 moves away from the seat 4 and takes its original shape, releasing the exit seat 4 for a liquid medium. The filling capacity of the liquid medium is repeated, as described above.

The present invention can be used in the energy and utilities sector for the automatic filling of various types of containers.

Filling float valve, comprising a housing with a suction inlet, outlet and is made in view of the nozzle seat inside located opposite the seat locking element made in the form of an elastic membrane with a thickness in the zone of interaction with a saddle movable in the axial direction of the shaft of the locking element is placed in the bracket, which is fixed relative to the housing by means of nut and kinematically connected by means of a lever and rod with a float located with the possibility of vertical travel, and the membrane around the perimeter clamped in the housing by a bracket with locking nut with education in the housing side saddle cavity communicated with the outlet and across the saddle to the inlet side, characterized in that the bracket over the membrane is made chamber which is communicated through made in the membrane, at least one hole with a cavity in the housing, the stem is sealed with respect to the bracket using the cuff stocking type and is made in the body cavity from the side of the saddle is installed covering the saddle with the formation of the annular gap and is made in the form of glass throttling insert, the bottom of which is a bypass hole, the membrane around the perimeter is sandwiched between the bottom of the Cup and the bracket, the side wall of the nozzle outlet, and on the inner wall of the Cup and the outer side surface of the saddle is made of radial longitudinal ribs with the education of the latter in the annular gap of the labyrinth in the cross section of the throttling channel.



 

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Filling valve // 2280804

FIELD: water power engineering.

SUBSTANCE: filling valve comprises housing with inlet and outlet branch pipes and cylindrical seat, flexible valving member that cooperates with the seat, lid, lever, tie, and float. The cylindrical seat is made in the housing to define the ring space around it. The space is in communication with the inlet branch pipe. The lid is set in the housing and its bottom is provided with the nozzle projecting outward. The outer side of the lid is provided with the cylindrical flange. The flexible valving member is clamped inside the housing over periphery by means of the lid. The space of the lid is separated from the ring space of the housing by means of the the flexible valving member and is in communication with the space around the through nozzle and to the ring space of the housing through the orifice. The lever is mounted for permitting rotation with respect to the lid by means of the cantilever. One of the ends of the lever is provided with the gate. The other end is kinematically connected with the tie. The tie is provided with a float for permitting movement with respect to the ring. The tank filled with fluid receives the sleeve. The bottom of the sleeve is provided with the opening that receives the floating valve for communication of the inner space of the sleeve with the tank when the fluid is discharged from the tanks. The float is mounted inside the sleeve for permitting vertical motion. The housing is provided with two-step ring collar. The collar is located at the level of the cylindrical seat. The L-shaped pillar is secured to the lid. The vertical large side of the pillar is provided with the sleeve. The sleeve has rectangular passage arranged along its side. The pillar passes through the passage for permitting the sleeve to move with respect to the second cantilever of the housing. The seats of their pillars are mutually perpendicular and provided with the long side along or counter to the inlet branch pipe of the housing.

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FIELD: water power engineering.

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FIELD: hydraulic power engineering.

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FIELD: hydraulic power engineering.

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FIELD: water power engineering.

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FIELD: water power engineering.

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FIELD: hydraulic power engineering.

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Filling float valve // 2248489

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to hydraulic intake valves designed for metered delivery of liquid into reservoir to be filled. Proposed filling float valve contains housing with vertical inlet branch pipe, outlet hole and cone-like seat inside housing. Shutoff member arranged opposite to seat is made in form of elastic diaphragm with thickening in zone of interaction with seat. Axially movable rod of shutoff member is arranged in bracket. The latter is fixed relative to housing by means of union nut. Rod of shutoff member is mechanically connected with float through lever. Float is installed for vertical displacement in cup installed for vertical adjustment relative to housing. Hole is made in bottom of cup. Float valve fitted in said hole serves to communicate inner space of cup with reservoir under filling when liquid is being drained from the latter. Float is installed for displacement relative to lever by means of adjusting screw. Adapter bracket is found on head of adjusting screw. Post with projections on its side surface is secured on bracket of valve housing. Projections are pointed to side of cup. Shaped projection is made in the latter. Cup is fixed relative to post by means of projection and fitted-on detachable clamp. Diaphragm is hermetically secured over perimeter on housing by means of bracket with union nut to form space in housing from side of seat. Said space communicates with outlet hole and, through seat, with vertical inlet branch pipe. Shaped axle is made on one end of lever. Cylindrical sections of said axle are arranged in coaxial holes of housing bracket. Section in form of sector of circumference in cross section of axle is made between cylindrical section of axle. U-shaped recess is made in rod in its middle part. Said recess accommodates section of lever axle made in form of sector in cross section. Maximum width of said section of axle is from 0.8 to 0.85 of width of U-shaped recess of rod. Wide side of sector is pointed to side of base of U-shaped recess for interaction with sides of U-shaped recess of rod. Center of rotation of sector relative to rod is arranged at distance from rod axis equal to 0.27-0.29of width of U-shaped recess. Hole is made on other end of lever. End of tie-rod mechanically coupled with lever is arranged in said hole of lever. Other end of tie-rod is secured in adapter bracket for adjustment of length of tie-rod.

EFFECT: enlarged functional capabilities of filling float valve, improved reliability in operation.

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Filling float valve // 2248489

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to hydraulic intake valves designed for metered delivery of liquid into reservoir to be filled. Proposed filling float valve contains housing with vertical inlet branch pipe, outlet hole and cone-like seat inside housing. Shutoff member arranged opposite to seat is made in form of elastic diaphragm with thickening in zone of interaction with seat. Axially movable rod of shutoff member is arranged in bracket. The latter is fixed relative to housing by means of union nut. Rod of shutoff member is mechanically connected with float through lever. Float is installed for vertical displacement in cup installed for vertical adjustment relative to housing. Hole is made in bottom of cup. Float valve fitted in said hole serves to communicate inner space of cup with reservoir under filling when liquid is being drained from the latter. Float is installed for displacement relative to lever by means of adjusting screw. Adapter bracket is found on head of adjusting screw. Post with projections on its side surface is secured on bracket of valve housing. Projections are pointed to side of cup. Shaped projection is made in the latter. Cup is fixed relative to post by means of projection and fitted-on detachable clamp. Diaphragm is hermetically secured over perimeter on housing by means of bracket with union nut to form space in housing from side of seat. Said space communicates with outlet hole and, through seat, with vertical inlet branch pipe. Shaped axle is made on one end of lever. Cylindrical sections of said axle are arranged in coaxial holes of housing bracket. Section in form of sector of circumference in cross section of axle is made between cylindrical section of axle. U-shaped recess is made in rod in its middle part. Said recess accommodates section of lever axle made in form of sector in cross section. Maximum width of said section of axle is from 0.8 to 0.85 of width of U-shaped recess of rod. Wide side of sector is pointed to side of base of U-shaped recess for interaction with sides of U-shaped recess of rod. Center of rotation of sector relative to rod is arranged at distance from rod axis equal to 0.27-0.29of width of U-shaped recess. Hole is made on other end of lever. End of tie-rod mechanically coupled with lever is arranged in said hole of lever. Other end of tie-rod is secured in adapter bracket for adjustment of length of tie-rod.

EFFECT: enlarged functional capabilities of filling float valve, improved reliability in operation.

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Filling float valve // 2248490

FIELD: hydraulic power engineering.

SUBSTANCE: invention relates to hydraulic intake valves designed for metered delivery of liquid into reservoir to be filled. Proposed filling float valve contains housing with horizontal inlet branch pipe, side outlet branch pipe and cone-like seat inside housing and shut off member arranged opposite to seat. Axially movable rod of shutoff member is mechanically connected with float by means of two levers. Float is installed for vertical displacement in cup. Hole is made in cup bottom. Float valve installed in said hole communicates inner space of cup with filled reservoir when liquid is being drained from the latter. Cup is installed for vertical adjustment relative to housing. Float is installed for displacement relative to lever by means of adjusting screw. Bracket with axle is secured in screw head. Post with projections on side surface pointed to side of cup is secured on valve housing. Shaped projection is made on cup. Cup is fixed relative to post by means of said projection and fitted-in detachable clamp. Shutoff member is made in form of elastic diaphragm with thickening in zone of interaction with seat. Diaphragm is hermetically secured on housing over perimeter by means of bracket with union nut to form space in housing from side of seat. Said space communicates with side outlet branch pipe and, through seat, with horizontal inlet branch pipe. Rod is arranged in bracket. One of levers is made stepped. One of steps of said lever is secured on housing bracket by means of hinge joint. Fork-like hole is made in second step of said lever. Axle of bracket fitted in said hole is installed for displacement along hole. Axle is secured on head of adjusting bolt. Oblong hole is made in first step of lever connected with housing bracket. Axle is fitted in hole for displacement hole. Axle is cantilever mounted on end of second lever. Shaped axle is made on other end of said lever. Cylindrical sections of said axle are arranged in coaxial holes of housing bracket. Section in form of sector in cross section of axle is made between cylindrical sections on axle. U-shaped recess is made in middle part of rod. Said recess accommodates section of axle of second lever made in form of sector in cross section. Maximum width of said section of axle is from 0.8 to 0.85 of width of rod U-shaped recess. Wide side of sector is pointed to said of base of U-shaped recess engagement with sides of rod U shaped recess. Center of rotation of sector relative to rod is arranged at distance from rod axis equal to 0.27-0.29 of width of U0-shaped recess. Oblong and fork-like holes of stepped lever are parallel to each other. Distance between longitudinal axes of said holes is form 1.25 to 1.35 of hole width.

EFFECT: enlarged functional capabilities of filling float valve, improved reliability of hydraulic delivery valve, reduced noise in operation.

2 dwg

Valve // 2280803

FIELD: water power engineering.

SUBSTANCE: valve comprises housing with inlet and outlet branch pipes and cylindrical seat, closure member that cooperates with the seat, and sleeve mounted in the tank filled with fluid. The bottom of the sleeve is provided with the opening that receives the floating valve for communication of the inner space of the sleeve with the tank when fluid is discharged from the tank. The float is mounted for permitting vertical movement inside the sleeve. The inlet branch pipe of the housing is connected with the inlet connecting pipe of the tank through a flexible pipe. The cylindrical seat is made in the housing for defining a ring space around it. The space is in communication with the inlet branch pipe. The closure member is made of a flexible flat diaphragm whose diameter is equal to the diameter of the greater step of the ring collar. The flexible diaphragm is tightly pressed to the step of greater diameter of the housing by means lid and nut.

EFFECT: enhanced reliability.

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Filling valve // 2280804

FIELD: water power engineering.

SUBSTANCE: filling valve comprises housing with inlet and outlet branch pipes and cylindrical seat, flexible valving member that cooperates with the seat, lid, lever, tie, and float. The cylindrical seat is made in the housing to define the ring space around it. The space is in communication with the inlet branch pipe. The lid is set in the housing and its bottom is provided with the nozzle projecting outward. The outer side of the lid is provided with the cylindrical flange. The flexible valving member is clamped inside the housing over periphery by means of the lid. The space of the lid is separated from the ring space of the housing by means of the the flexible valving member and is in communication with the space around the through nozzle and to the ring space of the housing through the orifice. The lever is mounted for permitting rotation with respect to the lid by means of the cantilever. One of the ends of the lever is provided with the gate. The other end is kinematically connected with the tie. The tie is provided with a float for permitting movement with respect to the ring. The tank filled with fluid receives the sleeve. The bottom of the sleeve is provided with the opening that receives the floating valve for communication of the inner space of the sleeve with the tank when the fluid is discharged from the tanks. The float is mounted inside the sleeve for permitting vertical motion. The housing is provided with two-step ring collar. The collar is located at the level of the cylindrical seat. The L-shaped pillar is secured to the lid. The vertical large side of the pillar is provided with the sleeve. The sleeve has rectangular passage arranged along its side. The pillar passes through the passage for permitting the sleeve to move with respect to the second cantilever of the housing. The seats of their pillars are mutually perpendicular and provided with the long side along or counter to the inlet branch pipe of the housing.

EFFECT: enhanced reliability.

7 dwg

Filling float-valve // 2351835

FIELD: machine building.

SUBSTANCE: present invention pertains to hydro-automation, particularly to hydraulic inlet valves with dosed supply of liquid into a filling tank, and is meant for use in systems for filling different types of reservoir with water. The filling float-valve has housing with an inlet, an outlet opening and a seat inside the housing in form of a nozzle, a gate opposite the seat, in form of an elastic membrane with thickening in the area where it is in contact with the seat. The axially moveable coupling of the gate is on an arm support. The arm support is fixed against the housing using a cap nut and is kinematically linked to the float through a lever and a tie-rod. The float is fitted with provision for vertical displacement. The perimeter of the membrane is pressed into the housing by the arm support with a cap nut, forming a cavity in the housing on the side of the seat. The cavity is linked to the outlet opening and, through the nozzle, to the inlet. There is a cavity on the arm support above the membrane. This cavity is linked to the cavity in the housing through at least one opening on the membrane. The coupling rod is pressed against the arm support using stocking type sealing rings. Inside the cavity in the housing, on the side of the seat, an encircling seat is fitted, forming an annular gap, as well as a throttle insertion which is in form of a cup. A bypass hole is made at the bottom of the latter. The perimeter of the membrane is pressed between the bottom of the cup and the arm support. An outlet opening is made in the side wall of the cup. On the inner wall of the cup and the outer side surface of the seat there are radial ribs with formation by the latter in the annular gap, a labyrinth in the cross-section of the throttling channel.

EFFECT: increased reliability and easier operation of a filling float-valve.

4 dwg

FIELD: machine building.

SUBSTANCE: stop water-supply valve comprises body, which contains the following components that are coaxially installed and tightly pressed one into another - threaded insert, couplings of various diametre and valve tube. The latter comprises a through hole with valve stem and thrust tube installed in it with the possibility of axial displacement. Thrust tube is spring-loaded with standpipe stem on one side and is fixed by a thrust ring at the other side. Valve stem is made in the form of hollow tube with plug at the end, is limited with a collar and connected to disk by means of thrust. Disk is a stop-relief valve of hydraulic chamber. This chamber is formed by coupling of smaller diametre, threaded insert and coupling of larger diametre. One or several openings are located in lower part of valve stem and thrust tube above collar. Centre of thrust tube openings is coaxially installed above centre of openings of valve stem.

EFFECT: protection against valve freezing at low temperatures.

4 cl, 3 dwg

FIELD: construction.

SUBSTANCE: support structure passes along the axis and includes a vessel. The valve body has a gate interacting with a moistureproof seat, and is arranged with the possibility of displacement around the axis. The upper and lower floats are arranged at various heights along the axis and interact with the valve body. The floats are arranged as movable independently on each other relative to the valve body together with variations of water level inside the vessel for selective and independent engagement with the valve body at various heights along the axis. The first and second control buttons impact a control lever. The control lever is attached to the valve body to lift the valve body along the axis. The buttons are arranged with the possibility of displacement at according various lengths along the axis, in order to lift the valve body at according various heights and to drain according amounts of water. The first button is arranged with the possibility of displacement to the first specified length in order to lift the valve body into the position of a partial drain. In position of the partial drain the valve body is only engaged with the upper float, besides, the lower float is not engaged with the valve body. The second button is arranged with the possibility of displacement to the second specified length, which is more than the first length, in order to lift the valve body in position of a full drain, where the valve body is engaged with the lower float.

EFFECT: increased efficiency of device operation.

12 cl, 8 dwg

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