JPS5918590B2 - fluid valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to fluid valves, particularly of the type used in lavatory or kitchen faucets having two handles.

The present invention also relates to a valve of the above type, including a novel arrangement in connection with the protection of the valve's sealing member.

In general, in fluid valves, leakage is completely prevented when the valve is closed, and the sealing member of the valve is also protected from leakage during long-term valve use. This is required.

However, conventional valves have been particularly problematic in this latter respect.

One example of a prior art valve is shown in U.S. Pat.
426795 is shown in FIG.

Note that the reference numbers in FIG. 20 include the same reference numbers as those in the figures related to the embodiments of the present invention (FIGS. 1 to 19), which will be described later. About the 20th
It should be understood that any text describing a figure is relevant only to that figure.

In FIG. 20 the inlet is designated 4 and the outlet is designated 5.

Inside the valve housing is a fixed sleeve 7, and inside said sleeve 7 is a hollow cylinder or plug 8.

The plug 8 has an outlet 9 that aligns with an outlet 10 in the stationary valve member 7.

An O-ring 12 is mounted in a groove on the outside of the plug 8.

A radially projecting grub screw 25 follows directly from the plug 8 and is screwed into the spindle 13.

This grub screw cooperates with two stops 16, 27 formed inside part T.

In the open position of the faucet as shown, the grub screw 25 rests against a stop 26, and in the closed position of the faucet it rests against a stop 27.

A problem with the valve of FIG. 20 is that the O-ring 12 is subjected to very high dynamic pressures when the valve is closed.

And because the O-ring is in the flow path from the inlet to the outlet, foreign objects in the water supply, such as sand, construction debris, and similar parasitic particles, can attack the O-ring. It is possible.

Seal ring 12, which is the closing seal ring for the valve in the flow, often does not seal the valve sufficiently after short periods of use and the valve begins to leak.

This leakage may be due to one of several factors.

If the dynamic pressure on the sealing ring 12 when the valve is closed is sometimes too high, the sealing ring can be completely dislodged from its groove and sucked through the outlet 5 to the right.

Normally, the dynamic pressure can cause the seal ring to lift out of its groove to the extent that it cuts during valve closure, causing the valve to leak.

Additionally, foreign objects in the water supply that attack the seal ring could wear the seal ring and cause it to leak.

It has been known for a long time with respect to the prior art, and U.S. Pat.
The problem clearly illustrated by No. 426,795 is that the seal ring 12 leaks because it is in the path of water passing through the valve.

The present invention aims to solve the problems in the above-mentioned prior art.

And the present invention solves the problem of protecting the valve closing seal by moving the seal so that it is never in the flow path.

In construction, the fluid valve of the present invention includes a sleeve having an inlet and an outlet, and a valve stem movable within the sleeve.

The valve stem has inlet and outlet means, the outlet means being movable into alignment with the sleeve outlet.

A fixed sealing member is positioned on the sleeve such that the sealing member closes the valve stem outlet when the valve is in the closed position.

That is, in the valve of the present invention, the valve closing seal ring is fixed and does not move relative to the valve stem, and is located away from the outlet of the sleeve.

The valve is closed by rotating the valve stem outlet so that it aligns with the closing seal ring.

However, the seal ring is never in the flow path through the valve, nor does it receive bed material in the water supply.

In fact, any pressure exerted on the seal from the valve will tend to cause the seal to move deeper into the seat, rather than causing it to disengage from its seat, giving it an opportunity to be damaged.

Therefore, in a fluid valve constructed in accordance with the present invention, a major source of leakage that existed in prior art valves is eliminated.

Thus, the fluid valve of the present invention substantially solves the leakage problem.

Referring further to the structural features, the first feature of the present invention is
The features of the described type of fluid valve are simple construction and reliable operation.

A next feature of the invention is a fluid valve that uses a stationary annular seal ring located on an axis 90 degrees to the axis of a movable valve stem to close the valve.

A next feature of the invention is a type of valve in which the valve stem includes a stationary and movable steel piston in contact with a valve closing seal member.

The following features of the invention include a sleeve, a valve stem rotatable within the sleeve, and an annular seal member retained by the sleeve such that the outlet of the movable valve stem is aligned with and out of alignment therewith. and a seal support that holds the seal in place on the sleeve.

A next feature of the invention is a valve of the type described that provides regulated water flow.

A next feature of the invention is a valve construction of the type described which uses an annular sealing ring inserted at an angle to the axis of the valve stem and sleeve and located on the outer periphery of the valve stem to close the valve. .

A next feature of the invention uses spaced apart fixed annular seal rings placed at diametrically opposite points on the sleeve, with a sleeve outlet intermediate the fixed seal members, and a valve located within the sleeve. A valve structure that includes a valve stem movable between an open position and a closed position.

A second feature of the invention is that the same sealing ring used at different locations within the valve utilizes different friction surfaces to collapse, so that when one sealing ring becomes particularly worn, it can interact with the other ring. This is a valve of the type described that can be used interchangeably.

A next feature of the invention is a fluid valve of the type described having a sleeve structure or sleeve means comprising a seal support and a sleeve, the seal support being located either inside or outside the sleeve. .

An advantage of the present invention is that such a seal is not subject to dynamic water pressure and collateral damage to the seal, nor is it subject to foreign matter in the water supply.

And it is clear that this provides protection for the valve closing seal of the water tap.

Other objects, features, and advantages of the invention will be apparent from the following specification, drawings, and claims.

The valve structure according to the invention is used in kitchen, bathroom and shower bath faucets where separate valves are used to control the flow of hot and cold water.

Although the valve is not limited to such uses, it is known to be particularly suitable for such uses.

The valve construction is simple, and valve closure is accomplished using an O-ring type seal held in place within the sleeve.

In a first embodiment, the valve stem is rotated 90 degrees relative to the axis of the sealing ring (about its axis) and moved so that the outlet means of the valve stem fit in and out. It is opened and closed by a seal.

In the second embodiment, there are a pair of closing seal rings and a pair of valve stem outlets, with the sleeve outlet i in the middle of the closing seal rings.

In other embodiments, a diagonally inserted sealing ring is positioned around the valve stem to effect closure of the valve.

The valve housing is shown generally at 710 in FIG. 1, and its lower threaded portion 12 is used to attach and support the housing to piping.

The raw water from the inlet passage 14 is introduced into the housing and directed to the valve structure therein.

The upper end of housing 10 is threaded 16 and carries a collar 18 which is used to retain the bulb within the housing.

The valve structure includes a valve stem 20 having a lower, downwardly open space 22 .

The valve stem 20 is located inside the sleeve 24 and
... is placed inside the Uzing 10.

The sleeve has an outwardly extending annular shoulder 26 which rests on the upper end of the nozzle 10, with a collar 18 over the shoulder 26 to hold the sleeve in a stable position within the housing.

The reach 26 has a downwardly extending protrusion 28 which mates with a corresponding cutout in the housing 10 to properly align the sleeve and housing. It easily flows out from the outlet 30.

The sleeve 24 is open at the bottom.

The valve stem 20 is likewise open at the bottom or interior end 34 to provide easy access to the interior space 22.

The valve stem 20 has a radial outlet 36 which is movable into alignment with a sleeve outlet means 38 comprising a circumferentially extending slot 40 and a generally circular outlet 42. It has become.

The combination of slot 40 and outlet 42 regulates the drainage of water.

In the sleeve opening 46 is an annular sealing ring 44 which is fixed in position with respect to both the valve stem and the sleeve.

A cylindrical seal support 48 surrounds the sleeve and is secured to the sleeve by a thrust key described below.

The seal support 48 has openings 50 and 5 located on thicker opposite sides and separated by an element 54, as shown in FIGS.
There are 2.

Openings 50 and 52 are for water passing through the sleeve and valve stem.
It serves as a passageway for flowing to the Uzing discharge port 30.

The bottom of the seal support 48 is an opening 49 that communicates the sleeve, valve stem, and passageway 14.

Aperture 49 also acts as a screen to prevent large objects from flowing into the valve structure.

The valve stem 20 has an upper O- position within its annular groove 58.
The ring seal 56 is in sealing relationship with the sleeve 24 by a lower O-ring seal 60 located between the shoulder 62 of the seal support 48 and the bottom of the sleeve 24.

The exterior of the sleeve 24 is sealed to the housing 10 by an upper seal 64 in the sleeve groove 66 and a lower seal 68 in the groove 70 of the seal support 48.

In FIG. 1, it is particularly noted that the bottom of the seal support, which may be considered part of the sleeve structure, forms the inlet of the valve and is closely adjacent to shoulder T2 near the lower end of the housing 10. There is a need.

Is the valve structure consisting of the valve stem, sleeve and seal support a thrust type? -74.

Seal support 48 has a slot 76 for receiving a thrust key.

The thrust key 74 has two spaced apart inwardly extending portions 80 and 82 that pass through a slot 84 in the sleeve and into a corresponding groove in the valve stem, thereby retaining the valve stem and sleeve. has been done.

Portions 80 and 82 are on opposite sides of the center 81 of the valve stem.

With particular reference to FIG. 4, the opposite ends 80a and 82a of thrust key portions 80 and 82 are of a slightly diverging configuration to facilitate movement of the thrust key through the aforementioned slot and opening into the fixed position of FIG. It has become.

To remove the thrust key, small recesses 71 and 19 are provided in the seal support and sleeve adjacent to the thrust key to allow access to a small hole 83 in the top surface of the thrust key.

Removing the thrust key allows the valve to be disassembled for seal replacement.

The upper end of the valve stem 20 has three flat sides, indicated at 87.

The sleeve 24 has an upwardly extending protrusion 88 which acts as a stopper to limit rotation of the valve stem.

A bundle attached to the flat side 87 of the valve stem can be oriented into one position on the valve stem.

Once so installed, the bundle can move a limited amount in any direction from the open or closed position, so that the valve opens in one direction and closes in the opposite direction.

The inner surface of the seal support 48 has a slightly enlarged diameter section 51 so that the seal support can be assembled over the sleeve and seal member 44.

The seal support is positioned at least partially over the sleeve prior to compressing the seal.

The seal is thus captured before pressure is applied.

As partially shown in FIG. 1, the valve stem and sleeve have corresponding M 20 a and 24 a, respectively.

The corresponding debris is slightly above the plane of the thrust v-.

This special construction is beneficial when incorporating the valve stem into the sleeve.

First, it allows the O-ring 56 to move easily with the valve stem as it is inserted into the sleeve from the bottom.

A second cooperating shoulder prevents the valve stem from being pulled out of the sharpening sleeve without the thrust key properly inserted.

Additionally, the shoulder serves as a positioning means for positioning the valve stem relative to the sleeve for subsequent easy insertion of the key.

The valve closed position is shown in FIG.

The valve stem outlet 36 is aligned with a seal ring 44 forming a valve closing seal.

As the valve stem rotates counterclockwise from the valve closed position, the valve stem outlet 36 first communicates with the slot 40 of the sleeve outlet means 38 to expel a small amount of water from the valve.

Further rotation in the same direction brings the sleeve outlet 42 into full alignment with the valve stem outlet 36 for maximum water removal from the valve.

The water flowing out through the outlet 42 also flows through the opening 5 in the seal support.
0 and 52, the outlet 30 of the housing also exits.

A particular advantage of the above construction is that the seal 44 remains stationary in position with the valve stem.

Therefore, the seal will not be rubbed, scratched, or worn out by valve operation.

The seal is not exposed to the flow of water and therefore cannot be moved by water pressure or come into contact with impurities in the water.

The seal seals the valve well and has a long life without wear.

The thrust +- not only retains the seal support and sleeve, but also retains the valve stem within the sleeve to prevent reciprocation of the valve stem and also prevents pressure to withdraw the valve stem.

Similarly, the thrust key also prevents the valve stem from being forced into the valve, thereby rendering the valve inoperable.

Figures 7, 8 and 9 show variations in valve construction.

The bottom of the valve stem includes an annular groove 106 spaced apart from the lower end 108 of the valve stem as shown in FIG.

A seal ring 110 is received within the groove 106 to provide a seal between the lower ends of the two valve stems and a metal piston 112, such as stainless steel.

Piston 112 has a lower open end 114 that aligns with opening 104 in the seal support to draw water into the piston.

The piston is attached to the lower end of the valve stem through a notch 116 made in the valve stem just above the seal ring 110, with a bent portion 118 of the piston bent into the notch.

An O-ring 120 connects the bottom 122 of the sleeve to the seal support 1.
It is stored between the scrap 124 of 00.

The operation of the structures of Figures 7, 8 and 9 is similar to that described above.

A stainless steel piston or cap provides a movable hard surface for the sealing O-ring held by the sleeve and seal support.

In the structure of Figures 1 to 6, the valve stem is entirely made of plastic.

Plastic NlTl is often picked up by particles and the plastic valve stem moves against the seal, wearing or damaging the seal and causing the valve to leak.

A gold maple or stainless steel cap or piston eliminates such potential wear and does not wear out the seal as the valve stem reciprocates between closed and open positions.

The structure of FIG. 10 is the same as that of FIGS. 7 to 9 except for the shape of the inlet of the stainless steel piston.

The piston 130 has a reduced diameter section indicated at 132, which defines the inlet for the valve stem.

A sealing ring 134 is housed in a recess made in the small diameter portion and functions similarly to sealing ring 120 of the construction of FIGS. 1-9.

The smaller diameter piston or valve stem portion is advantageous in that it allows the use of smaller diameter seal rings than the construction of Figures 7-9, and to some extent reduces the amount of friction that limits valve stem movement. .

Although the inlet is smaller than other versions of the invention, this does not interfere with the satisfactory functioning of the valve.

The construction of FIGS. 11 and 12 is similar to that of FIGS. 7-9, except for the use of two hermetic seal rings in diametrically opposed positions relative to the valve stem.

Valve stem 111 with stainless steel cap or piston
has a pair of diametrically opposed discharge ports 113 and 115, as shown in FIG.

There are two hermetic seal rings, designated 117 and 119, which are held in place by a seal support 121.

The seal support and sleeve 123 are sealed together with the seal ring 11
It has diametrically opposed outlets 125 and 127 between or intermediate between 7 and 119.

Thus, turning the valve stem through an angle of less than about 45 degrees brings one outlet of the valve stem at least partially into alignment with the outlet of the sleeve and seal support.

Although two sleeve and seal support outlets are shown here, there may be one outlet depending on the application.

The advantage of the structure of FIGS. 11-12 is that there is no lateral pressure on the valve stem with the structure of FIGS. 1-10.

Such lateral pressure causes excessive wear and leakage of the valve over time.

The two hermetic seal ring structures of FIGS. 11 and 12 can also be applied to the valves of FIGS. 1-6, and stainless steel can also be applied to valves with valve stems having steel pistons.

An advantage of the construction of FIGS. 7-9 and 11-12 is that the seal ring 120 is identical in size and shape to the seal ring on the side of the valve stem.

Seal ring 120 typically wears on its inner surface as the valve stem moves.

However, the hermetic seal ring wears only on the surface facing the valve stem, that is, the surface that is at 90 degrees with the surface of ring 120 that wears during normal operation.

By using seal rings of the same shape and size, worn seal rings can be replaced with each other and used as new seal rings for valve operation.

To this extent, the valve can be considered to have its own spare parts.

Further examples are shown in FIGS. 13 to 16.

The class l-1 and valve stems are the same as described above.

The sleeve and seal retainer are modified.

An obliquely inserted sealing ring 140 is used instead of the previously described sealing ring 44.

Seal ring 140 is retained by a beveled surface on the lower end of sleeve 144 and a similar surface along the upper end of spacer member 148.

Surfaces 146 and 142 define a diagonal slot or slot oriented at an angle with respect to the axis of movement of the valve stem within the sleeve.

FIG. 13 shows the valve in the closed position, with the outlet 150 of the valve stem 152 positioned relative to the hermetic seal ring 140 and the seal-retaining outlet 154 to prevent water from flowing out of the valve.

When the valve stem rotates, a portion of the outlet 150 first passes through the outlet side of the seal ring 140 and water flows through the outlet 150 and also to the seal retainer outlet 154.

In this configuration, water is regulated as the valve stem rotates.

Initially, only a small portion of the valve stem outlet 150 is on the outlet side of the seal.

Further rotation of the valve stem increases the portion of the outlet on the outlet side, ie, the side closer to the seal retainer outlet 154.

The structures of Figures 13-16 and 1-12 all have opposing shoulders on the valve stem and sleeve to prevent withdrawal of the valve stem and to perform the positioning function described above.

Additionally, the cut-out or enlarged diameter portion of the seal retainer is utilized in FIGS. 1-16.

When assembling a valve of the type described above, the parts must be properly aligned before inserting the thrust key.

To this end, the sleeve 144 has an alignment protrusion 155 that enters an opposing alignment groove 156 in the upper end of the seal retainer.

Accordingly, when the seal retainer is assembled over the sleeve and valve stem, the opposing aforementioned projections and grooves provide proper alignment for thrust key insertion.

Therefore, mispositioning of the sealing ring 140 with respect to the valve stem and the outlet of the seal retainer does not occur.

17. The structure of FIGS. 18 and 19 is a sleeve structure, i.e. a sleeve means formed by a normally cylindrical sleeve 160, an internally located seal support 162 and a valve stem 1.
64.

The valve stem is substantially the same as that shown in FIGS. 7 and 10, and includes a steel piston having a narrow end 168 that connects a seal ring 170 between the piston and the seal support. It is kept as a seal.

The basic difference between the valve stems of FIGS. 7 and 10 and the valve stem 164 is that the valve stem 164 extends outwardly of the intermediate section used to prevent axial movement, i.e. relative reciprocation, between the valve stem and the sleeve structure. This is due to the presence of an annular boss 172.

Sleeve 160 has a collar and locating projections, designated 174 and 176, respectively, similar to those used in other versions of the invention.

The sleeve exit means is indicated at 118 and includes a circumferentially extending slot 180 similar to that found in other structures.
and a typically circular outlet 182.

The lower end of the sleeve 160 includes a pair of diametrically downwardly extending lap regions 184 separated from adjacent portions of the sleeve by eyelets 186.

A hook 188 is located a short distance from the end of the hook area and engages a protrusion 190 extending outwardly from the seal support 162, as shown in FIG.

The generally cylindrical seal support 162 has an outlet means including a circumferentially extending slot 192 and a circular outlet 19.
4, both of which have a slot 180 and a sleeve 1
60 and thus provides an aligned outlet in the two elements forming the sleeve structure or sleeve means.

Seal support 162 has a circular opening 196 in which seal ring 198 is received.

It operates similarly to the seal ring of the structure of FIG. 1 and other types of seal rings.

Seal ring 198 is supported by piston 166 surface 200 and sleeve 1600 surface 202.

The inner surface of the sleeve, the outer surface of the piston and the radially extending annular surface 196 of the seal support form the seal ring 1
9B is held in place.

At the lower end of the seal support 162 are cross-shaped bones 204 and 2.
06, which forms a water inlet through which water flows into the valve structure.

Several small projections 210 extend outwardly from the ribs 204 and 206 to prevent flat objects from blocking the entrance of the valve.

Seal ring 2 in close proximity to the end of seal support 162
There is a notch (small groove) 212 in which the 14 is placed.

Adjacent to and forming one side of the notch 212 is a discontinuous collar 216 having a spaced aperture 218 for receiving the entire area of the sleeve 160.

The sleeve 160 has an internal reach 220 that cooperates with an end face 222 of the seal support 162 to attach the boss 112 of the valve stem 164.
forming an opposing and limiting surface for retaining the valve stem within the sleeve structure and preventing reciprocating movement of the valve stem relative to the sleeve.

The structure of Figures 17-19 is highly reliable and relatively easy to assemble.

After inserting the valve stem into the seal support, the combination is inserted into the sleeve so that the outer end of the valve stem is at the lower open end of the sleeve 160.

The valve operates similarly to the other structures previously described.

The valve of Figures 17-19 differs from the valves previously described primarily in that the relative positions of the sleeve and seal support are reversed.

The thrust key is replaced by cooperating shade means on the seal support and sleeve.

Additionally, the seal support and sleeve have cooperating surfaces to prevent axial movement of the valve stem.

Although the preferred embodiment of the invention has been shown and described herein, many modifications, substitutions and changes are possible.

[Brief explanation of the drawing]

1 is an axial sectional view of a valve of the type described; FIG. 2 is a side view of the valve; FIG. 3 is a sectional view taken along plane 3--3 of FIG. 1; and FIG. −4 cross-sectional view excluding the housing. Fig. 5 is a top view of the valve, Fig. 6 is a side view taken along plane 6-6 of Fig. 2, and Fig. 7 is an enlarged vertical sectional view similar to Fig. 1, showing a modified version of the valve. . Figure 8 is a partial side view of the valve stem in Figure 7, Figure 9 is a bottom view of the seal support of the valve in Figure 7, and Figure 10 is a partial sectional view similar to Figure 7, showing a modified embodiment. shows. FIG. 11 is a partial longitudinal cross-sectional view of another embodiment, and FIG. 12 is a partial longitudinal sectional view of another embodiment.
13 is an enlarged vertical sectional view showing another type of valve structure, FIG. 14 is a top view of the structure in FIG. 13, and FIG. 16 is a bottom view of the valve in FIG. 13,
FIG. 17 is a partial vertical sectional view showing another type of valve structure, FIG. 18 is a side view of the valve in FIG. 17, and FIG.
18 is a sectional view of the seal support, and FIG. 20 is a longitudinal sectional view of the prior art valve. Explanation of the symbols of the main parts, 10... Valve I/Using, 24, 123, 144, 160 ° 7 revet, 20.111, 152, 164... Valve stem,
44゜119.117,140,198...Fixed seal member, 34,114...Valve stem inlet,
36,113°115.150... Valve stem outlet means, 38,125°127.154,178...
... Sleeve exit means, 48.100, 121. I.J.
8.162...Seal support, 112,166
...Hollow piston, 74...Thrust key, 22...Inner space of valve stem, 120...
...A seal ring that extends around a hollow piston.

Claims (1)

Claims: 1. Sleeve means, inlet and outlet means in said sleeve means, a valve stem movable within said sleeve between open and closed positions and having inlet and outlet means; a fixed sealing member carried by the sleeve means and for closing flow between the inlet and outlet means of the sleeve means, the valve stem inlet means being in communication with the inlet means of the sleeve means; and said valve stem outlet means is movable into alignment with said sleeve means outlet means, whereby said valve stem and said sleeve means inlet means are in communication with said valve stem and said sleeve means inlet means to said valve stem outlet means and said sleeve outlet means. defining a passage for flow through the valve means, the sealing member being at least partially annular, the ring being disposed about an axis perpendicular to the axis of the valve stem; the sealing member is spaced from the sleeve means outlet means such that the passage of flow through the valve means never passes through the sealing member in any position of the valve stem; thereby moving the sealing member)
and protection from wear due to dynamic water pressure and foreign objects in the water, wherein the valve stem outlet means is aligned with and thereby closed by the sealing member when the valve stem is in a closed position. and fluid valve means. 2. The structure according to claim 1, wherein the sealing member has an annular shape and is arranged around an axis perpendicular to the axis of the valve stem. 3. A structure according to claim 2, characterized in that the sleeve means includes a seal support and a sleeve having the seal support inside. 4. The structure of claim 3, wherein the seal member is retained by adjacent surfaces of the sleeve and the seal support. 5. A structure according to claim 4, characterized in that the adjacent surfaces are at right angles to each other. 6. The structure according to claim 3, wherein the seal member is held by the seal support and is in contact with the inner surface of the sleeve. I. A structure according to claim 3, characterized in that the valve stem includes a hollow piston attached to one end thereof, the piston forming the inlet and outlet means for the valve stem. structure. 8. The structure according to claim 7, wherein the valve stem is made of a plastic material and the histone at one end thereof is made of metal. 9. The structure of claim 2, wherein the sleeve means includes a seal support and a sleeve having the seal support around the sleeve and an inner surface supporting the seal member. A structure characterized by 10. The structure of claim 2, wherein the valve stem is rotatable within the sleeve, and the valve stem outlet means is rotationally movable in the direction of the sealing member or in the opposite direction. A structure characterized by. 11. The structure of claim 10, further comprising means for preventing relative axial movement between the valve stem and the sleeve. 12. The structure of claim 11, wherein the means for preventing relative movement includes a thrust key that engages the valve stem through at least a portion of the sleeve. 13. The structure of claim 12, further characterized in that the thrust key is used to attach the seal support to the sleeve. 14. The structure of claim 1, further characterized in that the sleeve means and the valve stem inlet means are co-located at their adjacent ends. 15. The structure of claim 1, further comprising: the valve stem having an internal space, the valve stem inlet and outlet means communicating with the space, and the valve stem outlet means communicating with the inner space. A structure characterized in that the valve stem is also disposed for radial outward discharge, and the sealing member is annular and disposed in radial alignment with the valve stem outlet means. The structure of claim 1, further characterized in that the valve stem includes a hollow piston attached to one end of the valve, the piston forming the inlet and outlet means. Structure. 17. The structure according to claim 16, further characterized in that the valve stem and sleeve are made of plastic material, and the piston is made of metal. 18. The structure according to claim 17, further characterized in that the metal piston has a small diameter portion at one end. 19. The structure according to claim 17, further comprising: 17. A structure according to claim 16, further comprising sealing means between the inlet end of the metal piston and the inner surface of the sleeve means. including a sealing ring extending around and in sealing contact with said sleeve means, each said last applied sealing ring being identical in size and shape to said closure sealing member, but having a sealing surface that is similar to said closure sealing member. 2. The structure according to claim 1, further comprising: the sleeve means outlet; 19. A structure according to claim 18, characterized in that the means increase in circumferential dimension in the direction of rotation of the valve stem from the closed position to the open position. A structure characterized in that the sleeve means outlet means includes a notch and an adjacent communication port. nThe structure according to claim 1, further comprising:
A structure characterized in that the seal ring extends in the upper circumferential direction of the inner surface of the sleeve means and around the outer circumference of the valve stem. 2. The structure of claim 23, further characterized in that the seal ring has portions located at different distances from the inlet means of the valve stem. nThe structure according to claim 1, further comprising:
A structure comprising a second stationary seal member carried by the sleeve means and a second valve stem outlet movable into alignment with the sleeve means outlet means. 25. The structure of claim 25, further comprising: the stationary sealing member being located at a diametrically opposite point of the sleeve means and disposed about an axis perpendicular to the axis of the valve stem. A structure characterized by: 26. The structure of claim 1 further characterized in that said sleeve means outlet means is located intermediate said stationary seal member. 26. The structure of claim 25, wherein the sleeve means further includes a seal support and a sleeve, the seal support being positioned around the sleeve to support the stationary seal member. a sleeve, an inlet and an outlet means within the sleeve, and a fluid valve means movable between an open position and a closed position within the sleeve; a valve stem having inlet and outlet means at the valve stem and an annular fixed sealing ring disposed by the sleeve on the outside of the valve stem in an oblique orientation with respect to the valve stem and sleeve axis, the valve stem outlet means having an inlet and an outlet means at the sleeve; A fluid valve movable into alignment with an outlet means, said valve stem outlet means being closed by said sealing member when said valve stem is in a closed position. 30. The structure of claim 29, further comprising a seal support positioned around the sleeve and having an inner surface supporting the seal member. 31. The structure according to claim 30, further characterized in that the sleeve includes a spacer member having an inner slope for supporting the obliquely positioned seal ring. .