Abstract: A valve disc is capable of moving between a closed position in which it seals-off an opening formed in an enclosure and an open position in which it is withdrawn from the opening. The valve disc is maintained in its closed position when the pressure within the enclosure is below a predetermined value by means of back-pressure exerted by a pneumatic jack. Coupling means are provided for disconnecting the jack from the valve disc in the event of a fast pressure rise within the enclosure.

Abstract: A sewer relief valve for placement in an existing sewer line connecting a residence or other facility generating sewage and the sewage collection system, the valve comprising connection means adapted to connect into a sewer line, an adapter means in turn operably attached to the connection means, and a cap means attached in air-tight and water-tight fashion to the adapter means, the adapter means also having O-ring sealing means whereby backing up sewage and water interiorly to the sewer pipe will forcibly eject the cap means and permit exterior ground flooding rather than flooding interiorly to the residence or other sewage generating facility.

Abstract: A riser tube rigid with a piston head is vertically reciprocable in a cylindrical housing to which water under pressure may be admitted from the bottom to raise the tube into an elevated position, in which its tip extends above the ground, or through a lateral port near the top of the housing to lower the tube into a retracted position below ground. The piston head has a peripheral groove which communicates with the bore of the tube and, in the extended position, registers with an upper set of holes in the housing wall which are connected through a stationary external sleeve with a lower set of holes, lying then beneath the piston head, whereby water from a distributing pipe of an irrigation system can enter the riser tube after having elevated same into that position.

Abstract: There is disclosed a testing system employing a circulating tool, a cushion valve, a seal unit packer with a foot sleeve, and a landing nipple with a transducer fitting. This system permits running a packer with a foot sleeve and transducer fitting and landing it in the well, and subsequently running a tubing with a circulating tool and cushion valve to land in the seal unit. Thereafter a transducer may be run on a wireline.

Abstract: A shower-tub diverter valve has a housing with a diverter chamber and a water inlet and shower and tub outlets in communication with the chamber. A diverter formed of a stem and a loosely attached cylindrical member are reciprocal in the chamber between a position providing communication between the inlet and the tub outlet, and a second position in which the diverter cylindrical member blocks said communication. The diverter cylindrical member is in substantial sealing relation with the tub outlet when in the blocking position. The cylindrical portion of the diverter is movable relative to the stem and the diverter chamber includes guide means for use in aligning the diverter cylindrical portion as it moves between the described positions.

Abstract: There is disclosed a pressure relief valve having an inlet to the interior thereof which comprises a passageway including an annular sealing member of resilient sealing material which has a sealing lip about its inner diameter adjacent its outer end, and a valve element slidably reciprocable within the sealing member between a closed position in which its one end extends through and beyond the lip of the sealing member, so as to contain fluid from a source to which the inlet is connected, and an open position in which its lower end is removed from within the sleeve so as to permit said fluid from the inlet to be exhausted through an outlet or vent port from the interior of the valve.

Abstract: Pressure responsive piston valve with spring controlled detent balls; a detent pressure spring extends longitudinally through the piston and urges a biasing ball against detent balls which are longitudinally offset from the biasing ball; the detent balls are driven into a detent groove in the cylinder for the piston; pressure on the piston forces the detent balls out of the detent groove; calibrating means for the spring.

Abstract: Described herein is a damper for controlling the passage of hot gases through a duct. The damper has a frame through which are passages. Along these passages coolant is passed to cool the frame and so reduce its thermal expansion as a result of the passage of hot gases through the duct. One or more damper blades are positioned within the opening in the frame, these blades being mounted on shafts rotatably journalled in a bearing cooled by the coolant passing through the frame, a seal being provided where the shafts extend through the frame to allow flow of coolant from the frame into the duct and prevent flow in reverse.

Abstract: A pressure cooker has a cover which is removably secured in pressure-tight relation to the cooker body. The cover has a centrally disposed valve, which regulates pressure development in the cooker, and an over-pressure release plug in the cover margin adjacent a cover handle, which separates from the cover in response to excessive pressure development in the cooker is captivated by an overhang portion of the cover handle which directs the escaping fluids away from the hand grip portion of the handle. The cooker also has a pressure-actuated interlock in the margin of its cover opposite the cover handle which inhibits removal of the cover when the cooker is in a pressurized condition, and prevents pressure build up in the cooker when the cover is incompletely locked to the cooker body.

Abstract: A monitor-actuator pilot valve operable to close a safety valve in a fluid flow system reponsive to low line pressure or electrical failure. The safety valve is held open by pressure supplied into an actuator cylinder from the line protected by the safety valve. The pilot valve includes a first flow passage communicating with line pressure, a second flow passage communicating with the safety valve actuator cylinder, a third exhaust flow passage to the atmosphere, and a fourth flow passage to a fluid pressure reset. A valve assembly in the pilot valve responds to a low pressure in the first passage or electrical failure to connect the second and third passages for exhausting control pressure from the safety valve actuator cylinder to close the safety valve. An electromagnet on the pilot valve releases the valve assembly in response to a power failure allowing the safety valve to close. A reset assembly in the valve body manually or hydraulically operates the valve assembly reopening the pilot valve.

Abstract: A plug fixed within a provided opening in the wall of a pressure cooker releases therefrom when excessive pressure builds up in the cooker. The plug contains an air vent in which a pressure-actuated closure member operates. The closure member has an outer head which rests on the plug about the air vent when the cooker is in an unpressurized state, a stem which loosely extends through the air vent and an inner head having a shoulder which sealingly engages the underside of the plug about the air vent to close the cooker interior to atmosphere, the inner head also having a larger diametered flange which catches the cooker wall when the plug is ejected from the provided opening in response to excessive pressure build up in the cooker.

Abstract: There are disclosed herein spout assemblies, such as tub spouts or the like, for use in a fluid system employing a diverter valve and a shower head or the like. Most of the parts of the assemblies may be made of plastic, and include a spout body having inlet and outlet chambers and a partition with an aperture therethrough separating the two chambers. A lift button has a stem extending into the outlet chamber, and the stem is coupled with a flapper or gate mounted at the upstream side of the aperture in the partition for terminating the flow of water through the spout assembly to thereby cause diverter valve opertion, and flow through a shower head or the like in a conventional manner. In one embodiment, the stem is coupled with a spring biased nozzle in the outlet chamber, the nozzle being coupled with the flapper. In another embodiment, a spring is coupled with the flapper to bias it toward an open position.

Abstract: A diverter spout assembly includes a spout having a discharge opening, an inlet and a passageway therebetween. A valve mount is secured at a rear portion adjacent the inlet. The valve mount has a cavity therein which defines an inner chamber having a passage therethrough to the discharge opening. A diverter conduit is operably connected to the inner chamber. The diverter conduit is substantially transverse to the passage through the inner chamber. A jet nozzle is mounted within the inner chamber substantially aligned with the passage. The jet nozzle has a front open end aligned over the front surface of the diverter outlet to minimize water leakage and siphon effects through the diverter outlet when water passes through the discharge opening. A valve is operably mounted on the valve mount to close the inner chamber from the discharge opening so that water supplied from the inlet opening is diverted to the diverter conduit.

Abstract: A water supply control appliance adapted to be buried in soil beneath local frost level contains a chamber fitted with a piston which is spring-biased in opposition to inlet water pressure. Such pressure forces the piston to fully charged position at one end of the chamber whereupon a piston valve is opened to pass the water to outlet. Closing the supply valve releases pressure on the piston, permitting the piston to move in response to the spring bias. The piston movement pumps water below the piston out to drain and drains water from the outlet lines into the expanded chamber above the piston, safe from frost. Water in the drain line will, at the end of the piston travel, fall back into the chamber above the piston after piston travel is completed, when a piston ring seal spans a port to the drain line.

Abstract: A valve for mixing liquids having different properties, maintains a selected flow ratio of the liquids despite pressure changes in the inlet lines, allows discharge through either of two outlets and permits regulation of the flow rate through either of the outlets. The valve includes a balancing poppet which senses pressure changes in inlet lines and adjusts flow rate to compensate therefor, means for regulating the ratio of two liquids entering the valve and a diverter for selecting the one of the two outlets and for regulating the flow rate through either of the outlets.

Abstract: A valve assembly having a pair of flow passages in fluid communication with a chamber leading to a tire. One of the passages contains a typical one-way valve core mechanism while the other passage contains a pressure release mechanism. The cross sectional area of the tire inflation passage is less than the cross sectional area of the passage leading from the chamber to the pressure release bore. The openings at the ambient pressure ends of the valve bores are unobstructed for ready access to the valve mechanisms.

Abstract: A pressure relief valve which will move to a fully open position as soon as a predetermined pressure is established within a vessel in which the valve is mounted. The valve comprises a housing mountable in the vessel with its inner end opening inwardly of the vessel and its outer end opening outwardly of the vessel. A pressure relief passage opens through the housing and a valve member is slidably mounted with respect to the housing for movement between a first position closing the pressure relief passage and a second position in which the pressure relief passage is open to permit full flow through the pressure relief passage. Locking means is provided for releasably interlocking the valve member and the housing to retain the valve member in its first position.

Abstract: The disclosed valve assembly permits the automatic scuttling, or sinking, floatable pressure vessels or other containers, and comprises an extensible, spring-restrained nozzle containing a spring-biased ball seal within a flow passage. Vessel internal pressure extends the nozzle from a retracted position to expose the exterior end of the flow passage. A calibrated restraining spring ring maintains the nozzle retracted and in the extended position during pressure vessel operation. The ball seal is displaced from a nonsealing position against a ball seat to preclude pressure relief through the flow passage. After exhaustion of internal pressure, the bias spring and external water pressure force the ball seal from the ball seat to permit water entry and subsequent sinking of the vessel.

Abstract: A high-low shutoff valve of the reciprocating ball type which does not vent fluid to atmosphere upon the closing of the valve in response to operation of either the high or low pressure pilot.

Abstract: A diverter spout valve mechanism comprises a hollow pressure chamber having an inlet, an outlet on a vertical wall spaced from the inlet, and a vertically movable valve member formed of a moldable plastic or similar light weight material mounted in the outlet. The valve member is movable from an open position, wherein the valve member is substantially below the outlet and the outlet is open, to a closed position, wherein the valve member is raised so as to block the outlet. The valve member is formed so that when the valve member is in the open position, the flow of liquid through the spout exerts a downward force on the valve member and causes the valve member to remain in its open position.