Abstract: A low profile valve for discharging pressurized air to a system for utilizing such pressurized air. The valve includes a housing for mounting in or to an associated structure, and has at least one opening through which pressurized air is directed to and from the valve. A piston is located in the housing for axial movement therein, and the piston has a face portion containing a seal for sealing the piston against a fixed surface of the associated structure. In addition, a spring can be located about the piston for biasing the piston in the direction of the fixed surface.

Abstract: The invention relates to a filling fitting for filling a closed hot-water heating system, the filling fitting comprising a tube separator including an upstream backflow preventer, a downstream backflow preventer and a drain valve controlled by the inlet pressure and arranged, with regard to the flow, between said two backflow preventers, and a pressure reducer. This construction allows the downstream pressure reducer to be used in two manners, on one hand in connection with the tube separator and, on the other hand, in order to allow the pressure reducer to be removed. By dividing the filling fitting into two fitting portions, of which the second one only comprises the pressure reducer and the downstream backflow preventer, the second fitting portion can also be used alone without tube separator, when the safety requirements are less strict.

Abstract: A toilet flushing device is to be installed in a water supply tank and has a diverter valve which permits the supply of high pressure water to the rim flushing conduit of a toilet bowl when the toilet bowl is flushed. The diverter valve has a valve housing and a valve rod disposed movably in the valve housing in response to increase or decrease of the water level. A passage is formed longitudinally through the valve rod so as to direct high pressure water to the water supply tank, thereby preventing fouling formation in the passage of the valve rod.

Abstract: A solenoid actuated valve includes a first subassembly that carries a coil having its terminal pins attached to a structure such as a circuit board or lead frame. A second subassembly is provided for mating with the first subassembly and carries the valve body. The first subassembly has a solenoid spool including the coil, and a case surrounding the spool. An end plate is suitably locked to the case. A bias spring is provided between the spool and the end of the case. The spool assembly is designed to be freely floating both radially and axially within the coil case and end plate, as restricted by the bias spring. This permits proper location of the coil case to the hydraulic valve body assembly.

Abstract: In a series progressive divider valve having a number of identical valve units disposed adjacent to each other, each formed by a base member and a spool member having a movable spool therein, a manifold in the form of a plate which can be inserted between the base member and the spool member of a valve unit which modifies the flow of lubricant in the event one of the output ports becomes blocked or restricted. In the event such a blockage or restriction occurs, a relief valve disposed in the manifold plate is opened which establishes communication between two normally non-communicating bores which results in the re-routing of the lubricant to the succeeding valve unit. The manifold permits the overall output/lubricant delivery configuration of the divider valve to be continued in the event of such a blockage or restriction.

Abstract: According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A shut-off seal of a fixture is by-passed by a pressure relief water path which opens in response to elevated pressures. This permits relief of elevated pressure in water supply lines which might otherwise produce a burst event within the water supply lines. The path includes a stopper having a compressed channel that opens to release water at the elevated pressure.

Abstract: A pressure regulator for supplying water to an associated watering system for poultry or the like includes a top works structure and a bottom works structure which are formed of few parts, which are easy to manufacture and assemble together. The top works structure includes a cover seated within a cover and a reference spring assembly which includes a reference spring and a diaphragm membrane. The reference spring assembly can be adjusted to vary the outlet pressure of the regulator. The bottom works structure includes a body having an inlet through which water flows into the regulator from a supply and an outlet through which water flows out from the regulator to the associated watering system. A structure is provided for substantially isolating said diaphragm from water pressure in said regulator during flushing of the regulator and the associated watering system and during conditions of higher-demand for water.

Abstract: An air/vacuum valve throttling device capable of use with an air/vacuum valve in a piping installation is provided. The throttling device has a body with an interior and a number of ports. A vent/admit port connectable to the air/vacuum valve is provided. An outlet port and an air inlet port are also located in the body. A shaft extends from outside the body into the interior and has a plug connected to an end of the shaft so that the plug is located within the interior of the body. The shaft and plug are constructed and arranged to extend into the outlet port. The plug position is adjustable. A rod is also provided having a plug at one end extending into the interior and a retainer at another end outside the interior. A bushing in the air inlet port having an opening to allow the rod to pass therethrough, and a spring is used for resiliently centering the rod in the air inlet port.

Abstract: A propane reserve system for providing propane fuel to propane driven equipment. The propane reserve system includes a standard tank and reserve tank interconnected by a supply network such that the standard tank simultaneously supplies fuel to the propane driven equipment and the reserve tank, if needed. The supply network generally includes a standard tank effluent conduit, a reserve tank inflow conduit, a reserve tank effluent conduit and an output conduit meeting at a junction and a plurality of vanes restricting fuel flow through the network. A flow restrictor coupled to the reserve tank inflow conduit cooperates with one of the valves to limit flow into the reserve tank thereby allowing the effluent from the primary tank to fill the reserve tank while also powering the equipment.

Abstract: An improved rotor retainer housing for a rotatable rotor body and a relief sealing mechanism for a gas flow rate regulator. The retainer housing having structural features equivalent to the essential corresponding features of a conventional metal part is formed of molded plastic. A thin metallic layer is provided on the exposed surfaces of the molded plastic part to enhance surface conditions for maintaining an effective seal between the retainer housing and associated parts. The relief sealing mechanism utilizes a separate relief valve and relief valve seal to prevent premature failure of the seal during normal operating pressures. The seal is a metal retaining ring having a polymer O-ring integrally formed within the retaining ring. The O-ring provides sealing surfaces between the relief valve and the gas inlet on the regulator.

Abstract: A washing machine including a boiler, a motor-driven pump controlled by a control device to pump warm water from the boiler to a spray gun through a water supply pipe, a check valve installed in the water supply pipe, a water return pipe for sending water from the water supply pipe back to the boiler, an unload valve for releasing pressure from the water supply pipe, a water volume detector connected to the water supply pipe between the unload valve and the spray gun to accumulate water from the water supply piping and being actuated when accumulated water volume drops below a predetermined value, a pressure detector mounted on the unload valve and actuated when the unload valve is opened, and a control device driven by the water volume detector to start the motor when the water volume detector is actuated, or driven by the pressure detector to turn off the motor when the pressure detector is actuated.

Abstract: A stream selector for a process analyzer. The stream selector includes a valve module having two block valves and a bleed valve. In a first mode, the block valves are closed and the bleed valve is open. In a second mode, the block valves are open and the bleed valve is closed. In a third mode, all of the valves are open, thus ensuring that the module is completely purged. A stream-selection valve manifold is made by joining two or more valve modules side by side to form a common outlet and a common passageway, thus ensuring that the manifold is completely purged. The stream selector also provides a single block-and-bleed valve module having a disposal passageway which establishes fluid communication between a vent compartment and an external area suitable for the safe disposal of sample fluids and compressed gas contained in the valve module.

Abstract: A fluid flow control valve, e.g. a pressure vacuum breaker, includes a thermal expansion relief valve for protecting the control valve against damage due to freezing. The control valve has a valve body of rigid material and defines a main conduit. The thermal expansion relief valve has a relief valve body mounted to the main valve and defines a relief conduit in fluid communication with the main conduit, a valve element the moves within the relief conduit between a first sealing position in engagement with a valve seat to resist flow and a second position spaced from the valve seat to allow flow from the main conduit through the relief conduit, and a spring urging the valve element toward sealing position with a predetermined force selected to exceed normal operating pressure of the main valve and to lie below pressure damaging to the main valve. A thermal expansion valve for protecting fluid flow control valves, e.g. by retrofit, is also described.

Abstract: The present invention provides a portable source of high pressure gas that may be used by service or construction workers. A portable high pressure cylinder is filled with liquid CO.sub.2. A triggering device is threadably connected to a fitting on the upper portion of the cylinder, which fitting contains a high pressure press release valve and an over-pressure relief valve. A unitary housing for the triggering device contains all of the other internal working parts, including the push plate, plunger, and other components for a simplistic, easily usable source of pressurized gas. A belt clip allows the workmen to carry the source of pressurized gas with them for ease of use in their jobs.

Abstract: A valve assembly includes a housing having at least one valve orifice for fluid flow therethrough, and a valve member which moves between a fully closed position and a fully open position, respectively, closing and opening said valve orifice. The valve orifice has a clearance surface forming an auxiliary valve passageway selectively enabling flow communication therethrough in an intermediate position of the valve member between said fully open and fully closed positions, and in the intermediate position the valve member partially obstructs the valve orifice so that the passageway provides attenuated fluid flow communication through the valve orifice relative to fluid flow communication in the fully open position of the valve member. A manually controlled actuator enables limited displacement of the valve member between the fully closed position and the intermediate position for the attenuated flow communication through the valve orifice.

Abstract: A stream selector for a process analyzer. The stream selector includes a valve module having two block valves and a bleed valve. In a first mode, the block valves are closed and the bleed valve is open. In a second mode, the block valves are open and the bleed valve is closed. In a third mode, all of the valves are open, thus ensuring that the module is completely purged. A stream-selection valve manifold is made by joining two or more valve modules side by side to form a common outlet and a common passageway, thus ensuring that the manifold is completely purged. The stream selector also provides a single block-and-bleed valve module having a disposal passageway which establishes fluid communication between a vent compartment and an external area suitable for the safe disposal of sample fluids and compressed gas contained in the valve module.

Abstract: A fluid flow apparatus includes a peristaltic pump rotor mounted to a deck module assembly. A disposable software set is provided which includes a cassette which has a primary flexible tube and a pump platen adjacent to which the primary flexible tube resides. Tubing with blood processing bags are coupled to the manifold along with the input port of the rotor of a disposable blood processing centrifuge bowl. The software set also includes a three-to-one manifold which connects the primary tube to a plurality of secondary flexible tubes. Fluid flow through the secondary flexible tubes is controlled by a plurality of pinch valves which pinch the secondary tubes closed against closing surfaces on the cassette. A deck module assembly allows a user to properly secure the cassette relative to the pump rotor and the pinch valves. A flat surface is provided on the manifold to couple sonic radiation into the manifold and sense the presence of fluids therein.

Abstract: An electrically operated valve assembly having a plastic body with a solenoid coil attached for moving an armature valve member for effecting flow from the vale inlet to outlet. In one embodiment the armature is a pilot valve slidably movable in a guide over which the solenoid is received. A spring loaded check valve in the guide releases over pressure within the valving chamber. In another embodiment a spring loaded check valve in the body inlet passage releases over pressure to a bypass passage to the outlet. In a third embodiment a slug having a spring loaded poppet relief valve is welded over an opening in the inlet passage at generally right angles to the inlet fitting to provide direct relief of over pressure in the inlet.

Abstract: A coupling for use in connecting a pair of conduits in fluid communication includes a plug assembly having a fluid flow passage therethrough and adapted to be connected with one of the conduits and a socket assembly having a fluid flow passage therethrough and adapted to be connected with another of the conduits. The coupling includes a vent valve assembly for venting of fluid pressure in the plug and socket assemblies and the conduits. The vent valve assembly includes an outlet port having a seat and a valve member biased into abutting engagement with the seat to block fluid flow through the outlet port. The vent valve assembly further includes a manually actuatable member for moving the valve member out of engagement with the seat to enable fluid to flow through the outlet port.

Abstract: A relief valve to be used in cases for transformers submerged in oil that requires periodic testing for concentration of pollutants. A T-shape body having an upper tubular member with an internal through passage with an internal thread inside one of its ends and the other end having an external thread that is cooperatively received within a threaded bore in a transformer case. A perpendicularly extending tubular member includes an exhaust chamber wherein a spring loaded valve assembly is housed. The load in the spring is predetermined to permit the pressure that builds inside the case not to exceed a predetermined value. Using a flexible plastic tube that is insertable through the internal passage and applying a pressurized gas, preferably nitrogen, through the tire valve, a specimen of the liquid inside the case is extracted for analysis and testing without having to open the case.

Abstract: A device for retarding drool from a multi nozzle manifold having a plurality of outlet passageways in fluid communication with a single feed passageway. A drool-retarding member selectively segregates the outlet passageways with respect to fluid communication among the outlet passageways, preventing flow from one outlet passageway into a lower outlet passageway during adhesive cutoff periods. The drool-retarding member is a reciprocating member having an inoperative position in which a plurality of inlet ports to the outlet passageways are sealed, and having a fluid-apply position in which the inlet ports are free to allow fluid communication among the outlet passageways and the feed passageway. In a passive embodiment, the drool-retarding member is a valve that is spring biased to cover the inlet ports. Pressurized adhesive overcomes the bias of the spring when an upstream flow-regulating mechanism is controlled to discontinue adhesive flow.

Abstract: A combination shut-off and test-injection valve has a valve body with an inlet end and an outlet end adapted for connection to a fluid line or conduit and a fluid flow passageway extending from end to end. A shut-off valve in the body is movable between an open position allowing fluid flow through the body and a closed position closing off fluid flow through the body. The combination valve has a test-injection valve in fluid communication with the fluid flow passageway adjacent the shut-off valve which is movable between a normally closed position preventing communication between the fluid flow passageway and the exterior of the body and an open position allowing fluid communication between the fluid flow passageway and the exterior of the body.

Abstract: A valve for controlling flow of air from a source of air under pressure such as a compressed air tank comprising an elongate body with first and second ends and first and second sides lying opposite one another. A transverse opening, extending between the first and second sides of the body adjacent its first end, has five coaxial sections of circular cross section having various diameters. The valve further includes a valve stem having a head with a pair of annular grooves in it, each holding an O-ring. The O-ring closest to the inner end of the head is engageable with a valve seat provided in of the transverse opening on inward movement of the stem to close the valve. A knob is attached to the valve stem to facilitate moving the stem. The valve stem with the O-rings in the grooves but without the knob is capable of assembly by inserting the stem into the opening from one side of the body.

Abstract: A fast-actuating on-off valve and pressure regulator particularly well-suited for use with high-pressure incompressible fluids. An actuator, manually-operated or powered, provides a linear push-pull force to a valve stem assembly mounted inside a valve cavity having a fluid inlet and one or more fluid outlets which are arranged axially and concentric with respect to the valve stem. The valve stem assembly includes a valve stem that has a shoulder at one end, with or without an extension. One or more stem springs are positioned concentrically with respect to the valve stem and are capable of sliding along the valve stem and the extension of the valve stem. The valve stem assembly includes one or more stem collars each having a capped end with a central hole to engage the valve stem, a cylindrical cavity to house the stem shoulder, and a threaded portion engageable with a valve poppet.

Abstract: A valve for controlling flow of air from a source of air under pressure such as a compressed air tank comprising an elongate body with first and second ends and first and second sides lying opposite one another. A transverse opening, extending between the first and second sides of the body adjacent its first end, has five coaxial sections of circular cross section having various diameters. The valve further includes a valve stem having a head with a pair of annular grooves in it, each holding an O-ring. The O-ring closest to the inner end of the head is engageable with a valve seat provided in of the transverse opening on inward movement of the stem to close the valve. A knob is attached to the valve stem to facilitate moving the stem. The valve stem with the O-rings in the grooves but without the knob is capable of assembly by inserting the stem into the opening from one side of the body.

Abstract: A unit injector for staged injection of fuel in an internal combustion engine is disclosed. The unit injector comprises a fuel pump and a spray nozzle combined in a single unit adapted to be mounted on the engine with the fuel pump adapted to be driven by a mechanism provided on the engine. The fuel pump of the unit injector includes a pair of cooperating plungers defining first and second fuel compression chambers for producing a plurality of discrete fuel injections during a single cycle of the internal combustion engine and with a single stroke of the driven plunger of the fuel pump.

Abstract: A fluid supply system (10) for delivering a supply fluid to a washdown facility and for automatically diverting contaminated run-off to the sewer. The fluid supply system (10) includes a demand valve (13) connected in series in a supply line (11). The demand valve (13) is attached to a control line (14) which leads control fluid to a diversion valve (15) located in a sump (16). The demand valve (13) can operate either under upstream or downstream control to activate the diversion (15). In order to avoid inadvertent operation of the diversion valve the demand valve (13) includes a control valve member (33) and a pressure plate (32) which permits a small flow of fluid along the line such as may be experienced by a dripping tap. When the flow along the supply line exceeds a predetermined level the demand valve operates to divert control fluid to the diversion valve (15) to fill a variable volume chamber (48) and thereby unseat a diversion valve member (45) to open the diversion valve (15).

Abstract: A pressure regulator and relief valve including a valve body, a first regulating valve moveable between first and second positions in response to a predetermined gallery pressure for regulating the pressure of a fluid, a second relief valve moveable between first and second positions in response to a predetermined relief pressure of a fluid and a single spring disposed within the valve body for biasing both the first regulating valve and the second relief valve to their respective first positions within the valve body.

Abstract: A valve control mechanism for a paint spraying system provides for pressure relief prior to turn-off of the compressor. A pair of interlocking knobs, a pressure control knob and an off-prime-spray knob, are mechanically interlocked so that the compressor can only be turned on and off in a low pressure condition. When spraying has been completed, it is necessary to first operate the off-prime-spray knob to the prime position at which a cam structure opens the off-prime-spray valve for an immediate pressure relief prior to turn off of the pump.

Abstract: A valving mechanism for a balloon inflator is presented. The valving mechanism is attached to an inflator comprising a fan driven by a through-flow motor. A piston, received within a cylinder, has two bores passing therethrough, the first bore communicating with atmosphere, and the second bore communicating with a nozzle adapted for receipt of a balloon neck. When the balloon is placed on the nozzle and the piston is urged against a spring, an airstream passes through the second bore to inflate the balloon. When the balloon is removed, a spring urges the piston to a position in which the airstream passes through the first bore to atmosphere reducing the load on the motor and allowing the motor to run cooler.

Abstract: In a fluid control valve, a check valve is provided between the pump port and the first fluid chamber and allows the fluid to pass therethrough only in a direction from the pump port to the first fluid chamber, a down control valve is provided between the first fluid chamber and the second fluid chamber, an up control valve is provided between the first fluid chamber and the third fluid chamber, the fluid is allowed to flow from the pump port to the cylinder port through the check valve and through the down control valve when they are opened, and the fluid from the cylinder port to the tank port is allowed to flow through the down control valve, through the first fluid chamber and through the up control valve when they are opened. The fluid control valve can be obtained simple in structure and high in precision, and be allowed a reduction in cavitation and noise.

Abstract: A high pressure hydraulic flow control valve is formed with a spool which is capable of operating as a conventional spool to control the flow of fluid from an input port to an output port or to a return port. The spool also provides overload protection which will permit fluid to pass from the input port directly to the return port when an overload pressure condition exists in the fluid supply line. In alternative structure, the overload pressure release system may be incorporated into the valve which is used to control the return of fluid from the output port to the return passage. The high pressure hydraulic flow control valve is formed from a die-cast housing and has hardened seats mounted in access passages so as to bear against a seating shoulder. Preferably, a retaining sleeve is mounted in the access passage to bear against the hardened seat to retain it against the seating shoulder.

Abstract: An intake relief valve is provided with a gate in the form of a ball cock which rotates in a horizontal plane on a vertical axis by means of a swivel pin and sector gear turned by a worm gear and wheel. The gear box housing is at the top of the valve and its exposed upper surface carries the markings "close", "1/4", "1/2", "3/4", and "open". The swivel pin carries a needle indicator, exterior of the gear box, to move from one marking to the other to show the degree of opening of the valve. The ball cock closes the valve ports, one of which is screened. It forms an annular compartment with the valve housing through which liquid may pass to the pressure relief valve in the lower portion of the valve whether the ball cock is in open or closed position.

Abstract: A component group of electromagnetically shiftable directional control valves which can be installed in a simple manner includes 2/2- and 3/2-directional control valves preassembled on an electrical printed circuit board and secured in common with the printed circuit board by plugging-in the directional control valves into plug-in receptacles of a base element and by fastening a cover at the base element in the housing formed by the base element and the cover; a pneumatic main channel extends between the base element and the cover which is in fluidic communication with several directional control valves and which is tightly closed off by fastening the cover at the base element.

Abstract: A manifold fitting for a compressed air tank having an elongate main body of hexagonal cross-section with first and second ends, the first end being of reduced circular cross-section, the body having an axial passage extending from the first end toward and terminating short of the second end. The first end is externally threaded for attachment of the fitting to a tank for communication with the tank via the passage. The body has a lateral opening extending inwardly from a one of its six faces to said passage and a pressure relief safety valve at the lateral opening in the body. A passage extends across the body and intersects the lateral opening.

Abstract: A gas stove (A) includes a combined pressure regulator and manual shut off valve (C) which has an inlet (46) connected with a source (B) of natural gas. The combined valve includes a pressure regulator (60) in fluid communication with the inlet through a regulating valve assembly (64, 66). The regulating valve assembly which controls the flow of gas to a regulator chamber (62) is controlled by a diaphragm (68) and a spring (70) to maintain the pressure in the chamber substantially constant. A first outlet (48) is connected by a passage (72) directly with the regulator chamber for supplying pressure regulated gas to a plurality of range burner control valves (20) and range burners (22). A poppet valve (80) having only two stable states, fully open and fully closed, is connected between the regulator chamber and a second outlet (50). A manually graspable lever (52) and a cam member (86) enable the state of the poppet valve to be controlled.

Abstract: A fill valve assembly installed in a toilet flush tank includes a pressure relief valve adapted to activate at a predetermined pressure to discharge water from a system of piping to relieve pressure due to thermal expansion of water in the piping system.

Abstract: A manifold fitting for a compressed air tank comprising an elongate main body of hexagonal cross-section having an axial passage for communication with the tank, a first lateral opening extending from a first face of the body, an outlet member threaded in the first lateral opening having a valve seat at its inner end and a second lateral opening extending from a second face opposite the first. A valve member is threaded in the second lateral opening extending across the stem with an axial passage therein extending inwardly partway from its outer end to at least one port in the valve stem for communication with the axial passage. A filler check valve is located in the axial passage for filling the tank with compressed air via application of a coupling at the end of a compressed air supply to said stem. A third lateral opening extends inwardly from a third face to said passage and has a pressure relief safety valve therein.

Abstract: In an exhaust emission control system for an automotive internal combustion engine, an air control valve assembly either directs air flow provided by an engine driven air pump to the engine exhaust ports or to an exhaust system catalytic converter, or diverts the air flow away from the exhaust system. The air control valve assembly has a single diaphragm with three independent diaphragm valve elements, each operated by the air pump discharge pressure.

Abstract: The vaporizer and steam diffuser according to the invention comprises a sleeve (4) having a steam supply aperture (5), a hollow body (6) disposed in the sleeve (4) and having an aperture (9) for connection between the interior of the body (6) and the interior of the sleeve (4), and at least one first and one second separate output apertures (10, 12), of which one (10) is equipped with a vaporization nozzle (11), at least one separation valve (13) between the output apertures (10, 12), and a means (16) for controlling the position of the valve (13).

Abstract: Modular circulating and dead end color changers are made from synthetic materials inert to chlorinated hydrocarbon solvents. Universal supply and return manifolds have relatively smooth and uninterrupted walls defined, in part, by inlet and return valve surfaces, for easy solvent flow cleaning. Circulating high pressure color changes have improved actuators and circulating means including bypass lines for continuously recirculating both selected and non-selected paints. Valve sealing is enhanced by improved valves and pressure drop across each module is minimized by modular construction regardless of the number of modules used.

Abstract: A valve assembly for the control of pressurized fluids. The assembly comprises a casing housing a valve chamber with communicating inlet and outlet ports. A valve seat and valve-operating subassembly is associated with one of the ports. The valve-operating subassembly comprises a valve body threaded into the casing adjacent the valve seat. The valve body has an axial bore which receives a headed shaft having a seal washer mounted on its head in separable engagement with the valve seat. Resilient means, e.g. a coil spring, urges the washer in the direction of engagement with the valve seat with a force less than the force of the pressurized fluid introduced into the chamber. The shaft and/or seal washer preferably are mounted for free rotation to minimize scuffing of the washer during operation of the valve.

Abstract: An electro-hydraulic height corrector for motor vehicles comprising a hydraulic distributor having ducts connected, one to a pressurized supply source, another to suspension cylinders and another to an exhaust circuit, and means for connecting these different ducts together, and means sensitive to the position of the suspended part of the vehicle with respect to the none suspended part thereof.

Abstract: This invention relates to an air injection bath for a therapeutic use, the bath comprising a tub having in its base air injection nozzles supplied by a turbine, heating and ozonizing devices being disposed in a box outside the safety perimeter of the bath, the box having an electric and electronic control system receiving air pulses from a mobile control grip or from a stationary control panel disposed near the user for controlling various operations for air injection, heating of the injected air, ozone injection, the direction and speed of air injection into the bath and the starting and stopping of the complete facility.

Abstract: A modular color changer provides selected paint colors for spraying and continuously recirculates both selected and non-selected colors. A module is provided for each color to be selected and includes supply and return manifold blocks defining, respectively, portions of a respective universal supply manifold and of respective universal return manifold. Port control valves are utilized to control paint flow therethrough, under normal supply pressures. Solvent and air purge valves are used for cleaning. The changer is particularly advantageous when used in high pressure spraying systems. Modules can easily be added to a basic changer to increase the number of selectable paints.

Abstract: A manifold fitting for a compressed air tank having an elongate main body with a passage therethrough from one end to the other. The main body has an end portion at one end of the passage adapted for attachment of the fitting to a tank and a second end portion at the other end of the passage. The main body further has an outlet member, a valve member, and a pressure relief safety valve, each of which are threaded into lateral openings in the main body. A fourth threaded lateral opening is provided for a pressure gauge.

Abstract: The invention relates to a valve arrangement for supply steam and cooling water under pressure alternately to a compression moulding tool, via respective inlet valves. Upstream of the inlet valve cooling water taken from the cooling-water circuit is passed to piston arrangements, which act upon the inlet valves, and is used both as a working medium for the piston arrangements and as a cooling agent therefor.

Abstract: A check valve includes a housing with an inlet, outlet, and a predetermined size cavity. A spherical valve element is supported on a slidable stem which is supported by a support shaped like the valve element with a spring interposed therebetween to urge the valve element into a closed condition. A locking mechanism enables locking of the valve element in a fully open, fully closed, or unlocked free floating condition. In another aspect, the valve included a bleeder conduit to the inlet side. The invention is also the valve in combination with a fire engine pumper.

Abstract: Control valves for a plurality of outlets supplied from a single fluid source are combined in a single manifold. Each outlet conduit is selectively connected to an inlet conduit by an independently actuatable source valve. Each outlet conduit is also provided with an independently actuatable discharge valve and a safety relief valve. A pressure gauge may also be connected to each of the outlet conduits. The conduits may be channels formed in a solid manifold, and the independently actuatable valves may be manually actuatable push button valves. A locking mechanism is provided for each of the push button valves.

Abstract: A lumbar support air valve assembly is comprised of a housing having a chamber therein adapted to be connected to a source of air under pressure. A plurality of outlet ports are provided through the housing corresponding in number to the number of air bags located in the lumbar support region of an automobile seat back. The passage of pressurized air to the outlet ports is controlled by a check valve associated with each outlet port. A pressure relief valve is provided for limiting the pressure within the chamber and the individual air bags to a pre-determined value. A solenoid actuator is associated with each check valve within the housing so that on operation of the solenoid actuator by means of a switch located at a remote location on or near the dash board a solenoid actuator will cause the respective check valve to open. The energization of each solenoid actuator to open a check valve simultaneously opens an exhaust port for reducing the air pressure within the air bag associated therewith.