Abstract: A gate valve which prevents the accumulation of pressure within the valve housing when closed is disclosed. The device employs poppets which are located on both sides of a shuttle carried in the gate structure and movable transversely thereto. The shuttle fits in the gate structure in a manner to facilitate the communication of fluid throughout the valve housing so as to equalize, in the closed position, pressure throughout the valve housing, with upstream line pressures. The device also is reversely operable to respond to pipeline backflow.

Abstract: Non-refillable valve has a housing with a central bore, which has a lower portion that is narrower than its middle portion that in turn is narrower than its upper portion. A side port is present in the lower region of the middle portion. An outlet nozzle is located in the side port. The lower end of the housing sealingly engages the pressure container to provide communication therebetween. The valve stem is rotatably positioned in the upper portion of the central bore. The valve stem contains a vertical bore in its bottom portion. A resilient valve sealing member has a body portion and a top pin which slidably fits in the bore in the valve stem. The sealing member has a top rim portion which has a continuous outer surface and does not have any slots, identations or the like. Also, the body portion does not have any arm or arms, particularly around its periphery.

Abstract: Method and apparatus for bleeding brakes includes a brake valve with an integral ball check which secures directly to a brake wheel cylinder. Method for bleeding the brakes includes securing a brake bleeder valve with integral check valve in each wheel cylinder, securing a predetermined length of tubing to the brake bleeder valve, providing a reservoir for brake fluid at the end of the tubing remote from the brake bleeder valve, and pressurizing the brake system.

Abstract: A gate valve includes a pressure relief port located on the gate valve. When the gate is positioned such that the port communicates with one of the two flow passages and the valve body interior, uni-directional flow is permitted from the other of the flow passages. Flow is blocked bi-directionally when the port is positioned out of communication with the flow passage.

Abstract: A horizontal check valve has a swinging clapper (16) eccentric with a tapered valve seat (14) and carrying a floating ring seal. There is clearance between the clapper (16) and the passage wall at the bottom so that reverse flow urges the ring seal into the taper. The clapper (16) abuts an abutment surface (15) formed by the valve body (10) around the valve seat so that the hydrostatic forces exerted on the clapper (16) by the reverse fluid flow are reacted by the abutment surface and not by the tapered seat (14).

Abstract: An adjustable nonreturn ball valve for connection in a pipeline includes an elongate unobstructed main housing arranged to be connected at each end to flow pipes. There is an auxiliary housing located intermediate the ends of the main housing which has a longitudinal axis obtuse to the longitudinal axis of the main housing. There is a removable circular valve seat extending across the main housing at an obtuse angle relative thereto. The main housing is formed in two sections which are joined together at the plane of the valve seat. A ball is positioned to close upon the valve seat and is loosely entrapped in the auxiliary housing to allow flow in only one direction through the main housing, in which event and in use the ball automatically rides up in the auxiliary housing and away from the valve seat. The ball and the auxiliary housing have diameters greater than the diameter of the main housing, thereby preventing the ball from moving through the main housing.

Abstract: A manually operated valve is usable as a shut-off and stop/check valve for handling refrigerant fluids in a system subject to reverse fluid flow. The valve comprises a hollow valve body having fluid inlet and outlet ports, a valve plate within the body with a fluid flow passage therethrough, an annular valve seat on the valve plate around the passage, a hollow internally threaded valve stem sleeve attached to the valve body, a rotatable and axially shiftable externally threaded valve stem extending through the valve stem sleeve into the valve body, and a valve disc which is rotatably and axially shiftably mounted on the inner end of the valve stem and releasably engageable with the valve seat to open and close the valve. Rotation and axial shifting of the valve stem effects axial shifting of the valve disc to open and close the valve to enable it to function as a shut-off valve.

Abstract: An exhaust valve for a diving suit includes a valve seating disc having a concave annular valve seat sealing surface adjacent its rim, and a flexible diaphragm sealingly disposed adjacent the sealing surface. An axially resilient sleeve is attached at its ends to the inlet portion of the housing and the seating disc. Axial compression of the sleeve moves the disc and diaphragm away from a normally contacting annular rim in the housing to permit air under pressure to exit the diving suit and flow radially between the sealing rim portion of the diaphragm and the sealing surface of the disc, then to exit the valve.

Abstract: Filling and discharging valve for inflatable hollow bodies, particularly dinghies, comprising a valve housing having a radial flange adapted to be attached to the inflatable body and a valve seat facing the interior of the inflatable body, the valve seat co-operating with a plate-like valve member. A spring is located within the valve housing and biasing the valve member towards the closed position thereof. Holding means hold the valve member in the opened position. A dead center spring above the valve member includes a dead center spring which is secured to the circumference of the valve housing. The dead center spring holding the valve member in its close position above the dead center and holds the valve member in its opened position below the dead center.

Abstract: A door closer device comprises a body defining an internal chamber in which a piston is slidably received, the chamber, in use, containing hydraulic fluid. A valve is arranged in a passage in the body to permit the fluid to flow through the passage in both directions between spaces in the chamber at respective opposite sides of the piston. The valve has a first part axially adjustable along the passage and a valve member attached to said first part but movable axially relative thereto in the passage between extreme positions where it engages respective stop means on the first member, the valve member allowing fluid to flow unrestricted through an orifice at one end of the passage in one direction when in one of its said extreme positions, and at the other extreme position restricting flow through said orifice in the opposite direction.

Abstract: A closure-assisted valve includes a cartridge insertable into, and removable from, the remainder of the valve structure. The cartridge includes a displaceable piston having an elastomeric sealing member at one end engageable with a flat-surfaced valve seat. At the other end, the piston includes a drive surface against which a rotatable drive member is engaged. In a preferred embodiment, certain relatively movable portions of the cartridge include a cam surface and a cam follower. The cam surface is contoured such that the piston is advanced toward a valve closed position upon rotation of the drive member, but the last portion of piston travel prior to valve closure is only under the influence of gravity and fluid forces. In order to bias the piston toward a valve closed piston, entering fluid is directed around the piston so as to aspirate the piston toward a closed position.

Abstract: A device for dispensing molten thermoplastic material which an operator grips while using his thumb to press a solid block of the thermoplastic material through a sleeve and into a heated melting chamber from which the molten thermoplastic material is discharged through a nozzle. The device includes a bracket adapted to hold a second block of thermoplastic material in end-to-end relationship with a first block in the sleeve, and a heated barrier ring at the inlet to the melting chamber that restricts escape of the molten thermoplastic material through the sleeve; and may also include a slidable pressure plate between the block and an operator's thumb and/or a trigger-operated outlet valve between the melting chamber and nozzle.

Abstract: A variable capacity compressor has a low-pressure chamber, a high-pressure chamber receiving the discharge of some cylinders and a discharge chamber receiving the discharge of other cylinders. An on-off valve between the discharge chamber and low-pressure chamber is actuated by an electric device, such as a servo motor. An electric circuit controls the servo motor so that it is driven for a certain time period in response to a signal to change the compressor capacity. A device operative with the on-off valve moves the valve forward or backward according to the rotation of the servo motor and makes the motor idle when it reaches the fore or back end of movable space.

Abstract: A freeze proof faucet which is adapted to be mounted to an exterior wall and comprises an elongated tubular housing defining an interior housing chamber. The housing is mounted to the wall and the interior end of the housing is connected to the water supply while an outlet is formed on the housing outside the wall. An elongated valve member is longitudinally slidably mounted within the housing and movable from a closed position, in which one end of the valve member sealingly engages and closes a valve seat adjacent the innermost end of the housing, and an open position in which the valve member permits water to flow from the inlet, through the housing and out through the outlet. A valve actuator is threadably mounted to the housing on its exterior end and includes a pusher surface which cooperates with an abutment surface formed on the valve member.

Abstract: An anti-syphon, frost-proof hydrant including a lower body having a fluid inlet, and a fluid outlet defined therein, with a valve seat provided within the outlet where standpipe enclosure member is provided and adapted to be secured to the lower body around the valve seat, to provide a fluid conduit, having and outlet end connected to an upper body having a fluid inlet communicating with the standpipe outlet and a fluid outlet, a valve operator carried by the upper body including a stem member extending downwardly through the upper member and the standpipe and adapted to carry a valve member on the end thereof disposed in aligned relation with the valve seat so the valve member outlet is open and closed by movement of the stem member and where an anti-syphon drain port is provided in the lower body member and adapted to receive an anti-syphon drain device including an enclosure defining a chamber, and adapted to be received in the port, where valve seat means are disposed within the chamber with valve means o

Abstract: A straight-through electrical activated valve is disclosed having a flapper closure element responsive to differential pressures of a valve cavity and fluid pressure upon the opposing sides of the diaphragm. A pilot valve (or electric solenoid) is provided to drain the valve cavity. The flapper closure element seats against the body of the valve in such a manner that the valve operates as a reverse check valve. If a straight line is extended from the valve seat plane of the valve body the resulting angle with the perpendicular axes would be obtuse.

Abstract: A float valve for use with drill pipe or drill casing or the like in a well is provided wherein a valving flapper can be set in a partially open position while lowering the drill pipe or drill casing into a well thereby allowing the drill pipe or casing to fill with drilling mud or fluid thus preventing inadvertent collapse of the drill pipe or the drill casing. Once the drill string and the valve are fully in the hole, the valving flapper moves, responsive to circulation through the valve bore, from the partially open position to a fully open position allowing the valve flapper to freely pivot thereafter within the provided valve body between fully open and fully closed positions. The valve flapper is thus free to close in a back pressure situation or due to a blowout or for any such other reason. During circulation of drilling fluids or the like, the flapper is maintained in an open flow condition.

Abstract: A high pressure globe and check valve mechanism according to the present invention incorporates a valve body structure having a globe valve type seat removably positioned therein. A globe type valve element is adapted for seating engagement with respect to the removable seat and is positionable within the valve body by means of a valve actuating stem. A connection element establishes a lost-motion connection between the valve element and valve stem and thus allows relative movement between the valve element and valve stem during check valve type operation. The valve stem is also positionable within the valve body structure so as to maintain the valve element in positive seated engagement with respect to the valve seat.

Abstract: A check valve construction is provided which is free of friction imparting elements such as a labyrinth seal or a stuffing box with internal packing having an external mounted counterweight. One embodiment is of the power assist type constructed with convenient means for local daily testing the free swing portion of the check valve while another embodiment includes a manual test device. The valves may include friction free disc position indicators.

Abstract: A power-assisted valve is provided which is particularly effective for systems handling viscous materials, such as certain metering systems. The check valve operates effectively even with highly-filled viscous resins used in such systems. The valve includes a valve seat and a valve ball which can be urged toward the valve seat to a closed position by a fluid-powered cylinder and piston. The piston rod is separate from the valve ball so that the ball can rotate relative to the valve seat.

Abstract: Apparatus for controllably transferring fluid from a pierceable pressurized container includes a valve body, a stem member which is threadably connected to the valve body at one end and a fluid-conducting hose at the other end, and an elastomeric valve ball disposed in a cavity between the body and the stem member. The valve ball controls fluid flow from the container through the valve body and stem member to the hose in response to rotation of the valve stem relative to the body. Simultaneously, the valve balls acts as a check valve to prevent flow of fluid to the container. An O-ring seal between the stem and the valve body is adapted to leak at high pressure and bleed off fluid.

Abstract: A pipeline swing check valve comprising a fabricated valve body with a fabricated cylindrical hub member welded therein. The clapper is hinged, not to the body, but directly to the hub member or some part thereon so that it can be mounted and adjusted for proper seating without handling the entire valve, and then installed with the hub member as a unit.

Abstract: A device for blocking or releasing the flow of a gaseous or liquid medium therethrough by means of a valve ball which is situated in a valve seat includes a release bar which can be moved such that the valve ball is moved relative to the valve seat. The longitudinal axis of the release bar is disposed at an angle in the range of 20.degree.-100.degree. to the direction of flow of the gaseous or liquid medium.

Abstract: A vapor pressure equalizing valve disposed in a vapor return conduit between a storage tank and a liquid receiving tank to provide the same volume of flow but at a higher rate and greater fluidity than that of liquid flow volume in a preferably larger liquid conduit, and providing an excess flow shut off response that can be triggered manually or by the danger of a hose rupture or in case of fire or a break in the vapor return conduit, to protect either tank, or with two valves protect both tanks, with great quickness of action. The valve serves as a manual vapor flow shut off valve which may be latched open; and is unlatched to close by a local or remote control or fire, but while latched open provides an excess flow arresting action.

Abstract: A self-cleaning flow-regulating valve for an irrigation system has a displaceable element which is adjustable axially within a valve body by rotation of an external nut to adjust the position relative to two opposing seats of a floating bush which defines the size of a flow passage for irrigating liquid.

Abstract: A housing containing annular tapered valve seat and mating valve secure the valve in fluid communication with the container interior. Fluid in the container under pressure displaces the valve from its seat, flows through the interface between the valve and seat and is discharged to the ambient through a fluid passage coupled to the interface. A shoulder in the housing engages a shoulder on the valve for limiting the displacement of the valve to a value sufficiently small to retain fluid in the interface in the absence of pressure above ambient in the container. The fluid in the interface acts effectively as a seal to ambient air so that a negative pressure in the container results in ambient air pressure forcing the valve to its closed position.

Abstract: A valve assembly providing a disconnectable coupling for a split system air conditioner including an indoor unit and an outdoor unit joined by connecting tubing to complete the sealed refrigerant system. The present valve is effective in providing a disconnect system between a unit and the connecting tubing. The valve is activated by an electric coil that is applied to the valve only during the disconnecting procedure.

Abstract: A fluidized solids control valve is disclosed that is particularly well adapted for use with a flow of coal or char that includes both large particles and fines. The particles may or may not be fluidized at various times during the operation. The valve includes a tubular body that terminates in a valve seat covered by a normally closed closure plate. The valve body at the seat and the closure plate is provided with aligned longitudinal slots that receive a pivotally supported key plate. The key plate is positionable by an operator in inserted, intermediate and retracted positions respecting the longitudinal slot in the valve body. The key plate normally closes the slot within the closure plate but is shaped and aligned obliquely to the longitudinal slot within the valve body to provide progressively increasing slot openings between the inserted and retracted positions.

Abstract: A water faucet is opened by swivelling the faucet pipe to at least one predetermined position and is closed by swivelling to any other position.

Abstract: A pressurized nuclear reactor having an instrument assembly sheathed in a metallic tube which is extended vertically upward into the reactor core by traversing a metallic guide tube which is welded to the wall of the vessel. Sensors in each instrument assembly are connected to instruments outside the vessel to manifest the conditions within the core. Each instrument assembly probe is moved into position within a metallic guide channel. The guide channel penetrates the wall of the vessel and forms part of the barrier to the environment within the pressure vessel. Each channel includes a ball check valve which is opened by the instrument assembly probe when the probe passes through the valve. A ball valve element is moved from its seat by the probe to a position lateral of the bore of the channel and is guided to its seat along a sloped path within the valve body when the probe is removed.

Abstract: A burner assembly for liquid fuels in which a body member is rotatable about a central stem member and movable axially thereof to open a fuel valve and also to move a flow control member extending into a nozzle opening on the body member. The fuel valve comprises a poppet valve element in the fuel passage above a valve seat formed in the passage. When the nozzle opening is closed, the poppet valve element is pushed against the valve seat by engagement thereof with the body member, which closes the fuel passage thereby assuring no leakage of fuel from the burner assembly.

Abstract: Ventilator with an inhalation phase and an exhalation phase in its operative cycle having a servo controller with an inlet adapted to be connected to supply gas under pressure and also having an outlet. The controller has control valve means movable between open and closed positions to control the flow of gas from the inlet to the outlet of the servo controller. The control valve means is an open position during the inhalation phase of the ventilator and in a closed position in the exhalation phase of the ventilator. Means is provided for supplying gases to the patient from the servo controller until a predetermined pressure has been reached. After the predetermined pressure is reached, means is provided to supply an additional flow of gases to the patient to provide an inspiratory apneustic plateau for the patient. After a predetermined period of time, the patient is permitted to exhale and thereafter the same cycle is repeated.

Abstract: An in service exercisable tilt disc check valve is provided having an externally controlled power actuator connected to the valve shaft for moving the valve disc relative to the valve seat. The valve shaft has a radially extending tooth which is received in an elongated sector socket in the valve disc. As the shaft is rotated, the tooth engages the end shoulders of the socket and provides a connection between the shaft and valve disc. With the tooth positioned intermediate the socket ends, the valve disc is free to swing on the shaft.By selectively positioning the valve shaft, the valve disc may be forced to close against the valve seat to inspect the sealing integrity of the valve or the disc may be displaced from the valve seat to "exercise" the valve. The valve shaft may also be positioned to allow the valve disc to pivot normally as a check valve.

Abstract: The invention is a delayed release valve for a fire hydrant which permits the fireman to couple a fire hose with the valve in place to a fire hydrant, the valve being released subsequent to the coupling operation either by a timer which is set at the time the hose is attached, or by a radio-controlled servo mechanism so that the fireman who makes the hose attachment may proceed to the site of the fire and need not wait at the hydrant until on-site firemen are ready for water.

Abstract: A normally closed solenoid operated valve assembly having a poppet movable between a valve normally closed position seating in and closing in orifice and a valve normally open position. A movable armature has a reduced section for engaging and pulling the poppet to the open position. A range spring tends to bias the poppet closed until the upstream force of fluid is sufficient to overcome the spring force. The spring force may be adjusted to vary to a predetermined value the upstream force of fluid. To open the valve, a solenoid is energized to move the armature thereby to move the poppet to the open position.

Abstract: An air outlet valve for a diving apparatus includes a housing having an inlet and an outlet spaced from the inlet with a flow passage between the outlet and inlet having interior annular valve seat defined across the flow path. An axially extending actuation member is journalled in the housing for axial displacement and it includes an outside knob portion at one end and an inside knob portion at the opposite end which may be engaged for moving the actuation member. A flexible diaphragm which has an annular sealing rim portion which engages on the valve seat is secured at its central portion to a shaft portion of the actuation member and the sealing rim portion is engageable on the valve seat to close the flow passage.

Abstract: A valve arrangement having a disc which is tapered in cross section from the center to the periphery so that upon impact closure with the seat, deformation of the disc will absorb impact energy. The valve arrangement can consist of two check valves in back-to-back relation, the valve discs being swingable relative to the seats therefor, one of the valves being held in an open position and released upon abnormal conditions so that it can close.

Abstract: An apparatus for stopping the flow of gas under pressure from a relief valve comprises an elongated tube which fits around a flue secured to a tank. The apparatus has means for maintaining the tube in this position. An elongated rod is extended through the tube and secured into a load-transferring position so that it rests on the pressure valve assembly, thus preventing the assembly from opening.The method for sealing off a leaky safety valve has a first step of placing a tube over a flue for a safety valve. This tube has a bar adjustably secured within and generally coaxial with it. The bar is lowered until it sits on the valve head so as to restrain the valve from leaking.

Abstract: A live well valve apparatus having a valve body forming a ball member compartment and a stab joint conduit with flowthrough communication therebetween. A ball member is disposed in the ball compartment and positionable in moving clearance and in sealing engagement with a valve seat disposed between the ball member compartment and the stab joint conduit. A wedge means is provided to selectively force the ball member in sealing engagement with the valve seat, the wedge assembly in the preferred embodiment being an actuator bar slidingly supported on the valve body in opposingly aligned bar supporting grooves, the actuator bar having a clearance end and a wedge end.

Abstract: Three flow control valves are described, each of which incorporates a sleeve having a double conical valve seat and at least one frusto-conical valve member mounted on a support stem in a valve bore between first and second ports. In the first and second flow control valves, a restricted flow of fluid in one direction and substantially unrestricted flow in an opposite direction between the ports is obtained. The third control valve is provided with two valve members, and controlled flow rates in both directions between the ports are obtained. Any one of the control valves is readily converted into either of the other control valves and a total of only seventeen different parts is needed to construct any one of the valves.