Abstract: A water output switch structure of a faucet includes a water output switch structure of a faucet comprising a faucet main body, a water guiding duct, a switch valve, and a positioning unit including an adapter, a locking unit, a water-stopping pad and a water-stopping ring. The switch valve has a valve stick that moves horizontally, so a pulling head of the valve stick would not fall down unexpectedly due to gravity to change the status of water output.

Abstract: A press-fit space is formed between a hole end wall portion of a stator core and a closing end wall portion of a stopper, which are axially opposed to each other in a press-fit hole of the stator core. At least one of the hole end wall portion of the stator core and the closing end wall portion of the stopper, which are axially opposed to each other, has a recess that increases a volume of the press-fit space formed between the hole end wall portion of the stator core and the closing end wall portion of the stopper.

Abstract: A metering valve includes a valve main body consisting of a body and a cover, a sliding rod and an elastic member. The body has a positioning hole, a metering chamber, a containing space, and two sealing pads disposed on two end portions of the metering chamber. The containing space is for assembling the gas cylinder A groove is disconnected with the positioning hole, the metering chamber and the containing space. The sliding rod has two ends, wherein a gas channel is formed from one end toward an inner of the sliding rod, the sliding rod has a flange and a through hole, the through hole under the flange is for connecting the gas channel, and the sliding rod blocks a gas from the metering chamber by cooperating with the sealing pads. The elastic member in the groove is connected to the flange and the groove.

Abstract: A drain plug for selectively draining a source of fluid is described, and which includes first, second and third portions which provide coaxially aligned fluid passageways which extend therethrough, and wherein the second portion is moveable relative to the first and third portions between a first position which substantially occludes, and prevents the passage of fluid through the coaxial aligned fluid passageways, and a second position where fluid is allowed to pass therethrough and may be collected for disposal as required.

Abstract: An improved faucet control valve has a valve seat, a spring, a one-piece valve stem, an expanded end, a flexible hooking portion and a control unit. The one-piece valve stem manufactured integrally enables to realize convenient manufacturing, cost reduction and structural simplification of control members. The one-piece valve stem is only required to penetrate the valve port of the valve seat from top to bottom, enabling engagement of the flexible hooking portion for simple and fast assembly.

Abstract: A faucet control handle structure, which can be used in different water control bases with different sizes, including a control handle and a adjustable device, wherein the control handle has a receiving space that has two positioning ribs cross each other to engage with the adjustable device. The adjustable device has an adjustable base, a clamping piece and an adjustable unit, wherein the adjustable base has a sleeve hole, one end of which has a plurality of wedging edges formed at the opening end thereof. A clamping piece that can be adjusted to move back and forth is then formed in an opposing direction of the wedging edge. According to the above structure, since the adjustable device is located at the receiving space of the control handle, it can be used for water control sticks with different sizes of the water control base to enhance the practicability of the faucet handle and increase the convenience during the assembly process.

Abstract: An assembly structure of a faucet control handle that used in different sizes of water control bases includes a control handle and an adjustable unit, wherein a receiving space of the control handle has a first and a second wedging ribs cross each other at the periphery of an opening of the receiving space. The adjustable unit has an adjustable base, a clamping piece and an adjustable element, wherein the adjustable base has a connecting hole that forms a wedging edge at one end thereof, and the clamping piece that can be adjusted is formed facing the wedging edge. Since the control handle's receiving space has the adjustable unit, the faucet handle in the present invention can be used in different water control bases with different sizes of water control sticks to increase the practicability of the faucet handle, and further increase the convenience during the assembly process.

Abstract: A wall-mounted faucet control device includes a control handle and two transforming heads, wherein the control handle has two wedging ribs cross each other at the periphery of an opening of the control handle, and two transforming heads have an inserting slot on one side and a connecting surface on the other side. Two connecting slots cross with each other are recessedly formed at the connecting surface, and the connecting slots are engaged with the wedging ribs of the control handle. According to the disclosed structure, since the control handle's receiving space has detachable transforming heads, the faucet handle in the present invention can be used in different water control bases with different sizes to increase the practicability of the faucet handle, and further increase the convenience during the assembly process.

Abstract: In a valve device for selectively opening and closing a flow passage formed to open on a valve seat by a valve body through a resin-made seat, a hollow portion is formed on either one of the valve body and the valve seat and receives the resin-made seat therein, the resin-made seat has a thickness so that the resin-made seat partly protrudes from the hollow portion, and when the valve body is operated to close the flow passage, the resin-made seat is compressed to bring an end surface of the valve body into contact with the valve seat.

Abstract: A faucet control handle structure includes a control handle and two transforming heads, wherein the control handle has two wedging ribs cross each other at the periphery of an opening of the control handle, and two transforming heads have an inserting slot on one side and a connecting surface on the other side. Two connecting slots cross with each other are recessedly formed at the connecting surface, and the connecting slots are engaged with the wedging ribs of the control handle. According to the disclosed structure, since the control handle's receiving space has detachable transforming heads, the faucet handle in the present invention can be used in different water control bases with different sizes to increase the practicability of the faucet handle, and further increase the convenience during the assembly process.

Abstract: The present invention is directed to a desuperheater spraying valve assembly. More particularly, the invention provides a new and improved valve assembly, whereby cooling liquid may be controllably injected into a gas or a liquid stream, typically steam, to selectively maintain the gas or liquid at a predetermined temperature level. In a possible embodiment of the present invention, a class V valve assembly is disclosed. It comprises an actuator coupled to a plug with a valve seat in the proximity of said plug. The plug is affixed to an actuator rod which transverses the body of the valve assembly. A spray tube may be affixed to said valve seat and at least one spray nozzle is affixed to a to the spray tube. The plug and said valve seat are conical in shape as to when said plug is inserted into said valve, they form a seal.

Abstract: A proportional control pneumatic cylinder as an air actuator device for a hydraulic pump valve having a valve spool moving in a bore in a valve housing. The device having an actuator housing attachable to the valve housing and having a bore carrying a piston coaxially secured to an end of the valve spool. The device provided with spaced openings in the actuator housing which communicate with the bore therein to introduce air to act on opposite sides of the piston, and factory pretensioned biasing means for normally urging the piston and spool to a center closed position. Surface areas on opposite sides of the piston are approximately equal so that piston movement is approximately proportional to movement of an actuating lever of an air supplying pneumatic control valve over the majority of the range of travel of the actuating lever for both raised and lowered positions.

Abstract: A thermostat valve arrangement for the cooling circuit of an internal combustion engine includes a main valve member movably mounted in a housing adapted to be pressed against a main valve seat by a spring. The valve arrangement further includes a bypass valve member cooperating with a bypass valve seat in the housing. An expansion element has a first section cooperating with an abutment fixed to the housing and a second section cooperating with the main valve member and the bypass valve member such that the main valve or bypass valve is selectively closed and/or opened, in order to produce the cooling circuit of the internal combustion engine by means of a radiator or a bypass.

Abstract: A Tee connector for supplying aerosol includes: a Tee-shaped tube having a transverse tube portion and a longitudinal tube portion, the transverse tube portion having inlet and outlet ports and being formed with a top opening and a bottom opening, the bottom opening being aligned with the top opening and being connected fluidly to the longitudinal tube portion; a cover closing detachably the top opening; a valve including a valve plate which is movable downward to close the bottom opening and upward to open the bottom opening; and a spring disposed within the transverse tube portion and urging the valve plate so that the valve plate is moved downward to close the bottom opening.

Abstract: A faucet includes a faucet body, a sleeve, a control valve, and a mounting seat. The control valve includes a control shaft, a stop gasket, a retaining member, a leakproof gasket, a sealing gasket, a first leakproof cap, a second leakproof cap, a control knob, and a restoring member. Thus, the sealing gasket, the leakproof gasket, the first leakproof cap and the second leakproof cap of the control valve are tightly and closely located between the control shaft and the through hole of the faucet body to seal the through hole so as to prevent the water from leaking from the through hole and to stabilize the water pressure in the faucet body.

Abstract: An additive-storing tank assembly includes: a tank body having an additive-storing space defined in the tank body, in which an additive is stored; a plunger-holding tube provided at one side of the tank body in order to connect the additive-storing space with a water supply pipe for supplying water to a dispenser of a refrigerator; and an opening/closing means for selectively connecting the additive-storing space with the water supply pipe so that the additive stored in the additive-storing space is dissolved in the water flowing through the water supply pipe.

Abstract: A valve assembly provides a holder cantileveredly attached to a boss on an end cap to axially dispose an actuator and a poppet on an axis with a valve seat formed in the end cap. The actuator is preferably a shape memory alloy actuator. The end cap may be placed in line with a fluid system such as in a gas oven so that an electrical communication with an igniter is provided.

Abstract: An adjustable water valve of time-controlled type consists of an inner shell and a time-controlled apparatus. The time-controlled apparatus is disposed inside the inner shell and includes an elastomer and a push rod. The elastomer is disposed between a support lid and the push rod. When the push rod is pushed into the inner shell, the water valve is opened, so the user can wash with the water ejected. After certain time, the water pressures are balanced and the elastomer which has been compressed will push the push rod back to its initial position to close the valve.

Abstract: Filling valve (5) including: a hollow housing (11) having a valve seat (25); a moving valve rod (14) slidingly mounted in the housing (11) and having a sealing surface (23), the moving valve rod (14) and the hollow housing. (11) together defining a liquid chamber (18); a liquid inlet (26) for putting the liquid chamber (18) into communication with a liquid supply pipe (6); a device for putting the valve rod (14) in a first, full-open position, in which the sealing surface (23) is spaced from the valve seat (25), thereby forming a passage (27) for the liquid; a device for putting the valve rod (14) in a second, closed position, in which the sealing surface (23) is in sealing contact with the valve seat (25), thereby closing the passage (27), and a device for putting the valve rod (14) in a third, predetermined, semi-open position in which the sealing surface (23) is spaced from the valve seat (25) but closer to the same than in the full-open position.

Abstract: A valve to be mounted on a dunnage bag having one collar mounted on the bag, a seal plate positionable adjacent to an interior end of the collar and a stem slideably mounted in the collar to position the seal plate in one position where air is prevented from passing through the collar and in another position where the seal plate may be locked permitting air to escape from the bag.

Abstract: A selector valve capable of maintaining a closed position for a while even if an operating force to a valve element (80) is eliminated when the selector valve (10) is switched from a closed position (braking state) to an open position. The valve element (80) of the selector valve (10) receives an operating force from the outside and a returning force in the opposite direction of the operating force by a valve spring (90). Accordingly, the valve element (80) opens and closes the valve by making the first end (801) of the valve element (80) seat on/unseat from a valve seat (48) on the housing (20) side according to the presence or absence of the operating force. A first port (31) and a second port (32) on both sides of the valve seat (48) are connected or cut off from each other by the opening and closing. The valve element (80) is formed in a stepped structure, and receives a force based on a difference in pressure receiving area by the stepped structure which results from the pressure of hydraulic fluid.

Abstract: A valve assembly provides a holder cantileveredly attached to a boss on an end cap to axially dispose an actuator and a poppet on an axis with a valve seat formed in the end cap. The actuator is preferably a shape memory alloy actuator. The end cap may be placed in line with a fluid system such as in a gas oven so that an electrical communication with an igniter is provided.

Abstract: A manually operated switch for a faucet has a body, an inner pipe, a switching valve assembly. The body is hollow. The inner pipe is located inside of the body and has a flowing way. The flowing way is formed through the inner pipe. The switching valve assembly is slidably mounted inside of the flowing way of the inner pipe and extends out the body. When the switching valve assembly closes the flowing way of the inner pipe, the water pressure will keep the switching valve assembly closed. After the water pressure applied to the switching valve assembly is released or dismissed, the switching valve assembly returns back to an original position so that the flowing way is opened. The opening and closing flowing way can manually control the way of water flowing so that a user may not be scared or burned by the water.

Abstract: A vacuum container for preserving food is disclosed herein that includes a cover member for covering an upper part of a container member in which food is filled, a piston member equipped with the cover member and ascending and descending movable, and first and second valve members that alternately operate by a pumping operation using ascending and descending operation of the piston member to make a suction aperture and an exhaust aperture alternately open and close, thus discharging air from within the container member. Such operation allows the interior of the container member to become a vacuum state, thereby allowing food within the container member to be preserved for a longer time period, in a more sanitary manner, and a simple manufacture and a low manufacturing cost to provide users with convenience.

Abstract: A method and apparatus for servicing a pressurized system is described. A purge fitting can be used to vent the pressurized system. Venting can release a gas, such as air, from the system. The pressurized system can be a climate control system (e.g., an air conditioning or refrigeration system), a brake system, a hydraulic system, or a service device for servicing a climate control system. The purge fitting allows air that may be trapped in the pressurized system to be vented by depressing a purge actuator, such as a purge button attached to the fitting. The air can be vented from an opening adjacent to the actuator or other orifice. By purging air directly from the system, the amount of air introduced into the system during servicing can be minimized. The invention also features a coupling member that can be compact in size.

Abstract: A poppet valve assembly having a spring for holding the valve in a closed position and permitting opening of the valve in response to air pressure including valve stem alignment provided by a sleeve in engagement with the spring and having a cross pin supporting surface for engagement with the pin in shear to avoid bending.

Abstract: A thermostatic expansion valve for a vehicle air-conditioning system includes a valve body with a condenser passage and an evaporator passage, and a power element supported on one end of the body. The power element includes a diaphragm and a pressure pad disposed against the lower surface of the diaphragm. The pressure pad includes a valve stem engaging a valve assembly in the valve body to control the flow of refrigerant between the condenser and evaporator. The valve assembly includes i) a plunger retainer threadably received in the condenser passage, ii) a plunger moveably connected to the plunger retainer and having a throttling member controlling the flow through an orifice in the metering passage, and iii) a spring extending between the plunger retainer and the plunger and biasing the plunger, and hence the throttling member, toward the orifice.

Abstract: An operationally improved gas powered metal discharge valve is disclosed having fewer non-welded internal parts to release pressurized gas into a storage vessel containing granular material for the purpose of aiding flow of the granular material from the storage vessel. Structural modification of the valve construction and the physical connection of said valve to the storage vessel are described.

Abstract: To avoid sealing problems associated with attachment of a connector to a separate valve member when providing for evacuation of a bag or other container, a unitary connector and valve (10) comprises a spring-loaded valve member (24) located in a bore (20) in a housing (12), which has external clamping (40-46) enabling the housing (12) to be sealingly attached to a container (not shown) as well as a fitting (48) enabling the housing (12) to be attached to an air line (not shown).

Abstract: The drain structure includes a valve seat axially secured into a tube drain of a sink or basin, a sleeve disposed in the valve seat and a slider slidably engaged in the sleeve to discharge water from the sink. A double V-shaped slot in a lateral side of the slider is slidably engaged by a transverse end of a U-shaped positioning rod which controls the sliding span of the slider. When a button on the top of the slider is pressed a first time, the valve seat prevents discharge of water. When the button is pressed a second time, the valve seat is moved to discharge the water from the sink.

Abstract: A pressurized gas flow controlling microvalve having a casing and cap which together define a valve chamber having gas flow inlet and outlet ports and a plunger positioned within the valve chamber moveable from a closed position sealing the outlet port to an open position permitting gas to flow through the valve, the plunger having mounted thereon an O-ring which provides the seal for the outlet port.

Abstract: The present invention relates to a method and apparatus incorporating an automatic, three-way valve having inlet, outlet and drain passages and a close-open timing mechanism. The timing mechanism is adjusted to a predetermined period of time in order to close the drain passage and then open the outlet passage or vice-versa automatically after a predetermined period of time in response to the starting or stopping of an external source of pressurized fluid being directed to the three-way valve.

Abstract: An electromagnetic control valve is provided. The control stability of the electromagnetic control valve is improved because: (1) one end of the guide pin is forced into and then secured in a hole formed in the center of the coil guide so that the plunger moves in the center of the suction portion; (2) one end of the connecting rod is forced into and then secured in a hole formed in the center of the plunger, and a guide portion for guiding the connecting rod is provided in the center of the upper main body; or (3) the connecting rod is forced into and then secured in a hole formed in the center of the plunger, and a first guide portion for guiding the connecting rod is provided at the lower end of the coil guide and/or a second guide portion for guiding the connecting rod is provided at the lower end of the upper main body.

Abstract: A bleed valve for bleeding fluid from a hydraulic circuit comprises a valve body having a valve passage therethrough adapted for fluid communication with the hydraulic circuit, a valve seat on the valve body, and a sealing assembly. The sealing assembly has a valve closure connected to a valve stem and adapted for sealing engagement with the valve seat. The sealing assembly is moveable between a closed sealing position in which the valve closure sealingly engages the valve seat to block fluid flow through the valve passage and an open position in which the valve closure is spaced from the valve seat to permit fluid flow through the valve passage. A valve fitting on the valve body has an outlet port for exhausting fluid from the valve passage. The fitting is moveable relative to the valve body for selectively positioning the outlet port with respect to the valve body. The outlet port is in fluid communication with the valve passage regardless of its relative position with respect to the valve body.

Abstract: A plug assembly (2) which can be used in a drain, sink or bath (5). The plug (2) is of the pop up type being spring biassed into an open position. The plug (2) includes inter-engaging means for engagement of the plug (2) with a waste pipe (3) and means to permit the movement of the plug (2) relative to the pipe (3), both of which are circumferentially situated so that there is no impediment to fluid moving through the plug (2) and into the pipe (3). The means to bias the plug (2) to the open position includes a spring (18) which is arranged between the exterior of the plug (2) side and the interior of the waste pipe (3), and shoulders (6, 19) formed in each, such that said fluid flowing through the pipe (3) does not contact the spring (18). The plug (2) can be manually operated or operated remotely.

Abstract: A container includes a cover engaged on an open top. A channel and an opening are formed in the cover. A knob is slidably engaged in the channel and includes a tube having a pair of shoulders. A plug has a pair of hooks engaged into the tube and engaged with the shoulders so as to secure the plug to the tube. A spring is biased between the knob and the plug for biasing the knob partially outward of the cover and for forcing the plug against the cover to enclose the orifice. The plug can be made of plastic material instead of metal material.

Abstract: A self-venting valve having its principal parts molded of nylon reinforced with glass fibers is mounted in the bottom of a fuel filter assembly to drain water and other contaminants from the assembly. The self-venting valve includes a plunger portion with a bore therethrough for draining water from the fuel filter assembly and a valve body member which receives the plunger. The valve body member has a vent hole therein which communicates with the interior of the housing to let air into the housing so that as the water drains from the housing a partial vacuum is not created which might interrupt the flow of water. The plunger is biased to the valve closed position by a coil spring, however the valve may be held in the open position by misaligning lugs on the plunger with slots in the valve body member.

Abstract: A cylinder head assembly for an internal combustion engine includes self-aligning valve guides which are movable radially and coaxially to a variety of locations in which the axes of the valve guide and valve guide bore formed in the cylinder head are all parallel. The final location of the valve guide is determined by the contact relationship between the valve head and its mating valve seat.

Abstract: A safety faucet including a handle having an opening, a safety sliding block received in the opening on the handle, a casing, and a valve device mounted within the casing, the valve device including a cap fastened to the casing, a valve stem having one covered end with a water stopper and the other end extended out of a hole on the cap and pivotally secured to the handle, and a spring mounted around the valve stem and disposed inside the casing, when the safety sliding block is pressed with the handle to engage projecting plates of the block against the top cap, the valve stem and the water stopper can be lifted by the handle to open the water passage through the casing.

Abstract: A touch button controlled water stop mainly consists of an outer sleeve, a shaft rod, an upper toothed ring, a lower toothed ring, a spring guide bush, two springs, and a plunger; the shaft rod extending through a spring, a washer, a packing sheet, and a bushing ring and subsequently passing through the hollow cylindrical outer sleeve having a shaft support formed therein, the upper toothed ring, the lower toothed ring, the spring guide bush, and another spring and ending with the plunger secured thereon by a screw. The top end of the shaft rod can be linked with a touch button actuating means and the outer sleeve can be accommodated in a rear connector so that depressing the touch button will move the upper toothed ring to engage with the lower toothed ring. Further, raised blocks formed on the outer sleeve's inner wall confines the slide motion of the upper toothed ring and the lower toothed ring in such a way that the shaft rod will in turn dwell at two positions for each depressing.

Abstract: A faucet for controlling the dispensing of liquids includes a valve body having a valve chamber with a valve element movable between first and second positions for controlling flow between an inlet and the outlet. An operating stem extends from the valve element to a position exteriorly of the body through a bonnet connected to the body. A safety-type cam actuator is joined to the stem and is pivotally movable to selectively move the valve element between the first and second positions if it is first moved inward radially of the stem. Wall forming portions extending outwardly from an insert located between the bonnet and the body to define guide surfaces closely adjacent the stem and the cam actuator to prevent undesired tilting of the stem and the cam actuator.

Abstract: A disposable trumpet valve for controlling irrigation and aspiration flows under manual operation comprises a conduit and a pair of spaced apart valve barrels of substantially greater cross-sectional size within which valve members are reciprocable under manual control. Large diameter sections of the valve barrels lead to transition wells merging in the same plane into the conduit and directing the flow path between a side port in the valve barrel and the bottom section of the barrel. Thus a large cross-sectional flow area is provided throughout in a device which may be manipulated with either hand. Integral seals on a slider piston function to block flow and prevent leakage, while at the same time substantial cost advantages are obtained.

Abstract: A drain valve for replacement of drain plugs or drain valves to facilitate the quick drainage of fluid from an equipment. The drain valve has a tubular housing assembly having a threaded section to be threaded into a threaded drain hole and a hexagonal nut section for assisting in mounting or removing the tubular housing assembly to threaded into or from the drain hole. A valve stem assembly has a valve stem which extends through the tubular housing assembly and has an actuator which an operator can push to open the drain valve. A compression spring disposed between the valve stem assembly and the tubular housing assembly provides a force on the actuator to force the drain valve into a closed position. Inlets in the valve stem permit fluid to flow through a drainage bore in the valve stem when the drain valve is in the open position.

Abstract: A valve for controlling the flow of a gas in a gas burning torch comprises a housing having a flow passageway therethrough, a valve seat in the passageway, and a valve stem carrying a ball valve element for engaging and disengaging the valve seat to respectively close and open said passageway. A rotatable operating knob for displacing the valve stem is isolated therefrom by a ball thrust bearing, and the valve stem is supported in the housing for rocking movement transverse to the stem axis.

Abstract: A container includes a top-open container body having a tapered top-flange around the top opening thereof, and a top cover having a tapered bottom flange fitted around the top flange of the container body, wherein the top cover has a stepped air hole and a push-button plug assembly mounted within the stepped air hole and pressed to control the passage; the top cover has a recessed retaining portion moved to engage with a raised retaining portion on the container body for letting air pass through air guide grooves on the top cover and container body into the inside space of the container body.

Abstract: A plug device for a liquid container is presented to enable cleaning of a flow passage of the liquid container as well as to eliminate the liquid being left in the flow passage during the operation of the liquid container, thus providing hygienic and safe operation of the container. The plug device consists of an outer plug member and an inner plug member which is detachably attached to the outer plug member. When the members are assembled, a flow passage is formed automatically to enable access to the liquid stored in the container. When a press button provided on the inner plug member is pressed down, the opening disposed at the bottom of a plunger device remains open, resulting in the interior space of the container being connected with the flow passage via the internal liquid passage. In this condition, the container can be tilted to dispense the liquid from the container.

Abstract: A bi-directional flow valve for use in regulating flow of pressurized fluids in surgical instruments is disclosed. The valve comprises a valve body having an axial bore of variable radius, a plunger axially and slidably mounted within the bore of the valve body, a flange provided on the plunger for circumferentially engaging the bore at its narrowest point, a spring means for urging the flange against the bore at its narrowest point, and seal means to seal the gap between the plunger and the bore, and displacement means to move the plunger and flange out of contact with the bore so that fluid may pass through the bore and thus through the valve.

Abstract: A needle assembly for an airless spray gun is provided with a needle which is centerless ground and electropolished to greatly increase life. Further life enhancements are gained by use of a plastic needle bushing in the needle clamp and provision of a specific length to diameter geometry for the needle yields enhanced life as well.

Abstract: A valve for controlling medical infusions includes a one-piece plastic body, and a plunger assembly inserted into the body from one end. The plungers is connected to a manually operable cap containing a return spring, and the cap has a rim with a pair of internal barbs which engage an external flange on the body when the cap is fully depressed, to latch the valve open. A pair of flats on the cap rim are squeezed together in order to release the latch.

Abstract: There is disclosed herein an inexpensive, compact vacuum release which can be operated with one finger. The vacuum release comprises a base which is affixed to the wall of a vessel, a plunger which extends through a channel in the base, a rocker which raises the plunger to an open position in response to finger pressure, and a spring which biases the plunger to a closed position. The plunger has multiple passageways in which air can flow from the atmosphere into the vessel when the plunger is in the open position, and an "O" ring which closes off the air flow when the plunger is in the closed position. Since the vacuum release need not be permanently affixed to the vessel, it can be used on a wide variety of new and existing vessels, and can be replaced at will.