Abstract: A sewer drain trap primer valve includes a case defining a volume; a flexible diaphragm separating the volume into an upper, water chamber and a lower, sealed, air chamber; a conduit connecting the water chamber with an outlet orifice defined by a lower end of the case; a valve element moveable between a first position and a second position in response to differential of pressure between an inlet, defined by an upper end of the case, and the water chamber; and a check valve that permits flow of water in a direction from the inlet toward the water chamber and restricts flow of water in the opposite direction. The inlet orifice is located between the volume and a source of domestic water. The outlet orifice is located between the volume and a sewer drain trap. The conduit defines a valve seat and, in first position, the valve element engages the seat to restrict flow of water from the water chamber into the conduit.

Abstract: This inlet strainer (160) is for a thermostatic expansion valve (100) having an inlet fitting (114). The inlet fitting 114 includes an elongate passage (152), with an inlet opening at one end and a strainer-receiving opening at the other end, and a transverse passage (156) communicating with the elongate passage (152) between said ends. The strainer assembly (160) includes a closed outer end (162) threadedly connected to the fitting (114), a strainer tube (164) extending into the elongate passage (152) to a point beyond the transverse passage (156) and a closure ring (166) received in sliding relation within the passage (152) so that dirt is removed from the refrigerant before entering the valve port.

Abstract: The device of the present application, an automatic flow control device, provides means for maintaining a constant flow rate of strained fluid despite varying differential pressures and employs a combination of a unitary body with a ball valve assembly, a strainer assembly, and a flow control valve assembly. The unitary body is essentially in the shape of a "Z" and provides a compact valve with minimum threaded joints and access to the various components thereof with minimum disassembly.

Abstract: A multi-way valve of the present invention is to locate the rotatable valve core by the openings set in the valve body, the valve ports and the valve core are to be optimally sealed. An L-shaped passage is provided in the valve core, wherein a filter element is appropriately fitted. Thus it has the functions of filtering, reverse flushing of the filter element, shutting off the medium source, and serving as pre-valve and post-valve by-pass. The multi-way valve of the present invention can be further incorporated in the inlet and outlet passages of an automatic control valve. By using the valve of the present invention, three hand-operated valves, a filter and other accessories of pipeline can be omitted, the pipeline arrangements can be significantly simplified.

Abstract: A fuel delivery system that includes a fuel pump having an inlet for drawing fuel from a fuel supply and an outlet connected to a fuel filter so that fuel delivered to the engine by the pump flows through the filter. A check valve is positioned between the filter outlet and the fuel line to the engine so as to prevent reverse flow of fuel from the engine to the supply when the pump is shut down. A pressure reference inlet connected to the outlet side of the fuel filter on the downsream side of the check valve. The outlet of the pressure regulator is connected to return fuel to the fuel supply bypassing the filter as a function of fuel pressure at the filter so as to maintain substantially constant fuel pressure delivery to the engine. The reference input to the pressure regulator is connected to the engine fuel line. Any fuel pressure increase at the engine and in the fuel line due to heat or the like automatically opens the regulator so as to vent the pump outlet to the supply.

Abstract: An automatic/manual double-function urinal flush valve comprising a first flush port sealed by an electromagnetic valve controlled diaphragm, a second flush port sealed by a press rod controlled oscillating rod, wherein the press rod is pressed down, during power failure, to oscillate the oscillating rod in opening the second flush port, through which a flow of water is discharged to flush a urinal.

Abstract: A steam condensate removal device, typically for return of steam condensate to a boiler, is provided. A receptacle attached to the steam condensate removal line contains a gasket-separator and a threaded condensate restriction nozzle therein and a cap attached thereto to form a chamber housing the gasket-separator and nozzle. Condensate passes from the steam line, through the nozzle into the chamber and then on to the boiler return line. The device incorporates within it features that prevent seizing of the nozzle or the cap.

Abstract: An electronically operated primary valve actuation assembly is disclosed for use on a fluid valve in an irrigation system that can be run solely by ambient light energy. In operation, water passes from the high pressure side of a fluid valve through a filter assembly which removes particles as small as 0.002 inches. The microfilter assembly also has a magnet which further removes magnetic particles. As water exits the filter assembly it enter a microvalve actuation assembly which has two microvalves with valve inlet holes approximately 0.013 inches in diameter. It is necessary to filter the water to keep the microvalve holes from clogging. The microvalves are arranged such that when one valve is open the other valve is closed and vice versa. The microvalves require only a small amount of force to open or close the microvalve against high water pressure normally encountered in an irrigation system. Opening and closing the two microvalves causes the main fluid valve to open and close.

Abstract: A pressure-activated diaphragm valve which when installed in the main up-stream side of a pressurized line, responds to signals from a control unit to shut off the main supply line and at the same time, opens a drain port on the down-stream side of the valve. When used as a freeze protection system, the main water line is shut off and the drain port opened before the freeze point, thereby, eliminating water damage from frozen, broken pipes. The valve also is self-cleaning and has a magnetic plug to remove and keep metallic particles out of the control chamber and the control unit has automatic and manual modes.

Abstract: An improved fluid regulator is provided for receiving high pressure fluid and controllably outputting low pressure fluid. The regulator valve mechanism includes a regulator seat fixed to the regulator body and a regulator valve disk movable within the regulator body for sealing engagement with the seat. A spring-biased piston is provided axially movable within a piston housing in response to the low pressure fluid, and has a port therethrough. A relieving valve mechanism includes a seat formed on the regulator valve disk, and a dart member carried by the piston and having a flow passageway therethrough in fluid communication with the port in the piston. The regulator of the present invention is self relieving to ensure that pressurized fluid will continually be supplied to downstream equipment. The sensitivity of the regulator is enhanced, and the regulator is designed for low cost maintenance.

Abstract: A steam restricter device of the present invention is designed for retrofit to an existing steam trap of the type including a bowl-shaped chamber-defining member having an opening in it for admitting steam and condensate, and a drain for passage of condensate from the chamber to a condensate return. The device includes a body having an upper portion and a lower portion of smaller outer diameter than the upper portion. The lower portion may be slidingly received in the drain without rotation. The body has a nozzle formed in it which is sized to permit passage of condensate, but to inhibit passage of steam. The upper portion has an intake in it which provides communication from the chamber to the nozzle, and the lower portion has an opening in it which provides communication from the nozzle to the condensate return. A generally tubular bushing fits around the lower portion of the body and sealingly engages a wall in the drain for sealing between the lower portion and the wall of the drainage opening.

Abstract: A combination fuel pressure regulator and fuel filter apparatus for vehicle fuel systems has a fuel supply tank with a fuel pump therein for puming fuel to a fuel supply rail having fuel injectors attached thereto. A fuel filter is operably disposed between an inlet supply tube and a fluid outlet tube for filtering impurities from fuel passing therethrough. A valve in fluid communication with the inlet supply tube is provided with a regulator for causing flow to be short circuited back into the fuel supply tank when the pressure in the fluid outlet exceeds a predetermined level. The valve is biased to a closed position and will remain closed as long as the pressure on the clean side of the filter is below the predetermined pressure whereby all of the fuel in the inlet supply tube will pass through the filter.

Abstract: The problem of protecting a spring (44) of a spring loaded valve member (34) in a filter assembly (10) is solved by providing a valve body (12) defining a valve seat (20), with the valve member movable in the valve body to and from a closed position against the valve seat. The spring is disposed in a cavity (46) in the valve body, the spring biasing the valve member toward its closed position against the valve seat. The cavity has a mouth located in the path of movement of the valve member for closing by the valve member to capture and isolate the spring when the valve member moves to an open position away from the valve seat. A filter bowl (22) is removably attached to the valve body for automatically opening the valve member in response to attaching the bowl to the valve body.

Abstract: A self cleaning solenoid controlled water spray nozzle and valve assembly including an adaptor connected at one end to a solenoid actuated valve member and having a nozzle and nozzle flow direction member connected to the opposite end of the adaptor. A cleaning pin is connected to the valve member and extends through the nozzle orifice. In one embodiment the nozzle is integrally formed with the adaptor and the flow direction member is integrally formed on the bottom wall of a cup positioned within the adaptor. In another embodiment the nozzle and associated flow direction member are threadably mounted on the adaptor.

Abstract: A steering force control apparatus for a power steering system includes a hydraulic path, a branch path, and a cylindrical filter. The hydraulic path extends from a pump to a power steering side. The branch path has one end open to a wall midway along the hydraulic path and extends to a hydraulic reaction mechanism. The cylindrical filter is adjacent to the wall of the hydraulic path and has a mesh portion for filtering a pressurized oil. The mesh portion is formed at a portion of the cylindrical filter at which the hydraulic path communicates with the branch path. The portion of the filter at which the hydraulic path communicates with the branch path has a tapered stepped portion mechanically formed at the downstream side of the branch path. The cylindrical filter has upper and lower ring frame members to be fitted in the hydraulic path. The lower ring frame member is formed to have an outer diameter smaller than that of the upper ring frame member.

Abstract: A gas inlet valve assembly for inflatable boats includes valve structure having at least one inlet opening and at least one outlet opening. A valve member is positionable between the inlet opening and the outlet opening to control the flow of gas through the valve. A gas dispersion member, preferably made of a porous material, is provided with the valve and is substantially adjacent to the valve outlet opening, such that gas emanating from the valve outlet opening will be thrust into contact with the gas dispersion member. The expanding, cold gas jet is dispersed by the porous material of the gas dispersion member. Direct contact between the cold gas jet and raft surfaces, together with freezing and cracking associated therewith, will thereby be substantially prevented. In a preferred embodiment, a pluraity of radially-disposed outlet valve openings are provided, and the gas dispersion member is substantially annular.

Abstract: An automatic air valve for a conduit, through which passes fluids and/or solids, which valve prevents the discharge of contaminated air therefrom into the environment and which further permits the introduction of fresh air from the environment into the conduit when a negative pressure develops therein. The valves may be disposed at either the terminus of or interposed within the conduit flow line of a duct system. The valves include an interior filter that restrains foreign objects, such as insects and snakes, in the duct systems from operatively interfering with the proper operation of the valve.

Abstract: A fuel filter with improved means of preventing water and particulate contaminant from passing therethrough including a cannister, a place secured to the cannister open end having a central fluid outlet and fluid inlet openings spaced from the fluid outlet, a rigid tubular fluid pervious member within the cannister having one end in sealed communication with the plate fluid outlet opening, a flexible filter medium surrounding the outer surface of the tubular member through which fuel really passes but which resists the passage of particulate matter and water, a first deformable washer having an opening therethrough secured to the end of the tubular member opposite that atached to the plate, a ball within the cannister and normally in engagement with the first washer, the ball having a diameter slightly greater than the internal diameter of the washer, and an annular seat between the plate fluid outlet opening and the first end of the tubular member, a second deformable washer member supported concentrically o

Abstract: There is provided apparatus for eliminating syphoning of fuel from a filter screen enclosed standpipe reserve metering valve comprising a sleeve member positioned within the filter screen, circumscribing and extending above and below the standpipe upper extremity.

Abstract: A hot/cool water regulating faucet comprised of a housing and a cover knob, with two sleeves respectively mounted on the two cross shaped openings of the housing. Each sleeve is comprised of a movable axle connected with a spring, a rubber cock, a metal cap, a nut and a washer. By means of the tracks made on the cover knob to control the expansion of the two movable axles of the two sleeves, the flow rate of hot water and cool water and the mixed water temperature are concomitantly controlled.

Abstract: A pico fuel injector valve (10) adapted to be received in an injector socket provided in an air intake manifold (12) of an internal combustion engine having an integral fuel rail (14). The fuel injector valve has a magnetically permeable cylindrical housing (26) having radial inlet ports (24) and an armature guide bore (32). A valve seat member (40) having an outlet port and a valve seat (48) is attached to the end of the cylindrical housing (26) having the guide bore. An orifice plate (56) having a calibrated orifice is disposed in an orifice plate recess (50) provided in the face of the valve seat member (40). A stator (76) disposed in the cylindrical housing has an axially disposed pole member (78) and a radial flange (80) attached to the other end of the cylindrical housing. A solenoid coil is wound directly around the pole member (78).

Abstract: A filter apparatus having a filter element and a stop valve, both incorporated in a body thereof. By means of an engagement, the stop valve is coupled with a cap which is fitted to a body of the filter apparatus by thread-engagement. When the cap is removed from the body for replacement of the filter element, the stop valve rotates together with the cap to close an inlet port of the filter apparatus. On the other hand, when the cap is fitted to the filter apparatus, the stop valve directs the fluid into the filter apparatus since an opening provided in the stop valve coincides with the inlet port because of rotation of the stop valve.

Abstract: The feedback chamber of the pilot pressure valve is supplied with its discharge after it has been filtered whereby the pressure which is supplied to the feedback chamber is subject to the flow restricting effect of the strainer and increases the valve output to compensate for the flow restrictive nature of the strainer.

Abstract: A noncontrolling type valve for use in a gaslighter, a portable cooking stove and other burners, which valve comprises a valve body push-fitted in a recess formed in the top plate of a gas container; and a filter positioned under the valve body to permit the gas to flow at a controlled rate. The valve according to the present invention uses a porous concave object as a filter. The filter is laid on an impermeable, resilient membrane. The gas invades the concave space of the porous object from the outside to flow in the valve opening. The rise of the surrounding temperature will cause the membrane to bend yieldingly upwards to cover the inside of the porous object, thereby preventing the increase of the gas flow passing through the porous object over a predetermined flow rate.

Abstract: The invention relates to a filter for cleaning lubricating oil, especially for internal combustion engines of motor vehicles, with a filter case which, when installed, is in an at least approximately upright position. It has a cylinder-shaped oil filter cartridge and an inlet for the dirty oil flowing through the filter cartridge, plus an outlet for clean oil connected to the central interior part of the filter case and situated in a base at the bottom end of the filter case. A drain passage at the bottom end of the filter case becomes connected to the inlet chamber of the filter case whenever the filter cartridge is removed, plus a closure which cuts the drain passage off from the filter case.

Abstract: A two-way tamper-proof vent arrangement especially constructed for food grade receptacles and tanks is disclosed. The vent arrangement includes inner and outer stainless steel inverted cup members which are nested together and are concentrically mounted on a bracket over a tubular vent opening in the receptacle or tank. The outer cup member has a lower circumferential edge which bears on the surface of the receptacle or tank surrounding the vent opening so that tubes or other instruments cannot gain access to the vent opening. The inner cup member has a lower circumferential edge spaced from the surface of the receptacle surrounding the vent opening. The outer cup member is provided with a plurality of small openings to permit the inflow and outflow of venting air along a labyrinth path formed by the inner and outer cup members between the exterior of the outer cup member and the vent opening.

Abstract: A pressure reducer, especially adapted for the supply of very pure gas in the electronics industry, which comprises a final stage having an inlet, pressure-reducing means and a low-pressure outlet. A filter having a filtration threshold lower than a micron is interposed between the pressure-reducing means and the low pressure outlet.

Abstract: A pressure relief valve in a cryopump is preceded by a filter element in a filter housing. The filter element is springloaded so that the filter element itself provides pressure relief with clogging of the filter. The housing may have a removable end cap. The filter is spring biased by a spring between the housing end cap and a filter end cap.

Abstract: A filtered stop including a seal assembly having a rotary seal member with flow ports and a stationary seal member with corresponding flow ports, the rotary seal member being selectively positionable by indexing means which are operable from outside the stop so that the flow ports of the rotary seal member may be positioned either into or out of alignment with the ports of the stationary seal member to automatically shut off the flow of fluid before removal of the filter can be accomplished.

Abstract: A top entry expansible tube valve has a generally cylindrical receptacle in the valve body disposed transversely of the flow passageways to receive a slotted core sleeve with a central barrier and expansible elastomer sleeve sealed around it. A generally circular cap closure is bolted to the valve body to seal around the access opening and a perforated sleeve is secured between the cap closure and the core sleeve so that the cap closure and core sleeve, with expansible tube thereon, may be removed as a unit for inspection.

Abstract: A non-turbulent fluid shut-off valve with a shrouded movable valve member outside the flow stream when in its open position.

Abstract: A fluid shut-off valve and a strainer assembly mounted in the same body with the strainer easily removable when the valve is in its closed position.

Abstract: The fluid valve assembly includes a hollow movable valve having an open-ended tubular fluid filter in the longitudinal bore of the valve and overlying transverse fluid discharge passages in the hollow valve to filter fluid before it flows through the transverse discharge passages from inside the valve. Downstream of the tubular fluid filter, the hollow valve includes one or more fluid metering passages which are moved relative to a valve seat to control a second flow of fluid from inside the valve. The increased fluid flow longitudinally in the valve bore when the valve is moved from the seat to effect the second fluid flow exerts a washing action on the tubular fuel filter to remove debris or foreign matter therefrom and carry same out through relatively large fluid passages not prone to clogging.

Abstract: A pressure relief valve in a cryopump is preceded by a filter element in a filter housing. The filter element is springloaded so that the filter element itself provides pressure relief with clogging of the filter. The housing may have a removable end cap. The filter is spring biased by a spring between the housing end cap and a filter end cap.

Abstract: A fuel nozzle assembly with integral valve for a gas turbine engine includes an inlet fitting with a tubular wash-type fuel filter therein between a central fuel passage and an annular primary fuel manifold therearound to filter primary fuel flowing through the passage to the annular primary fuel manifold chamber on the inlet fitting. The manifold chamber is in fuel flow relation in the valve housing with a primary fuel take-off passage therein for providing primary fuel flow to a fuel nozzle.

Abstract: A valve for regulating the passage of a fluid through pipes, in particular pipes having a large diameter, has a valve housing and a valve unit. The valve unit includes a spindle movable in vertical direction in the housing and is connected to a valve disk which reciprocates in a flow cylinder having a perforated casing. The spindle is further connected to a lifting cylinder which provides the movement of the spindle and the valve disk between a shutoff position and an open position. The valve unit of the valve is insertable into the housing and removable therefrom in its entirety without necessitating a dismantling of the housing.

Abstract: A pilot-operated, directional flow control valve includes a movable spool member axially slidable between two positions within a cylindrical bore provided by a multi-ported valve body. An integral portion of the valve body serves as a housing for an inverted, cup-shaped filter element having its lip portion spring-biased downwardly against an annular seating surface. The filter element housing portion of the valve body provides a horizontally extending blind bore functioning as a supply fluid inlet port to the valve. The blind bore inlet communicates with an inlet to the interior of the filter element, the filter element extending perpendicularly upwardly from a point spaced from the terminal end of the blind bore inlet. The orientation of the horizontally extending blind bore inlet relative to the vertically extending filter inlet provides a mechanical filtering action to trap heavy dirt particles at the end of the blind bore before they can enter into the filter element and prematurely clog it.

Abstract: A condensate drainage device for a steam system which includes a series-connected arrangement of orifice-type devices particularly suitable for relatively small condensate drainage capacity. The orifice-type devices are selected for installation in housings or bodies having advantageously placed heat exchanger fins which cooperate with the size of orifice devices installed for desired condensate drainage over a range of different steam system pressure and volumetric capacities requirements.

Abstract: A differential fluid pressure indicator including a bypass valve which provides an indication that the filter is in the bypass condition. The bypass valve includes a differential area piston which includes at the outlet port thereof a restriction orifice adapted to insure a predetermined stroke of the poppet in the bypass valve, thereby to insure actuation of the indicator.

Abstract: A vacuum regulator for automotive vehicles of the type having an engine exhaust system and a computer-controlled exhaust gas recirculation system, the regulator having a housing provided with a pair of spaced outlets intercommunicating through a flow restrictive orifice and adapted to be connected to the engine exhaust system and to the exhaust gas recirculation system, respectively; an inlet for atmospheric air connected by a passageway to the outlets; and a solenoid-operated spring-biased valve in the housing controlling flow of atmospheric air to the outlets; the housing being fashioned in two parts or sub-assemblies which are interconnected at final assembly by the flux collector which is part of the solenoid, the operating parts of the regulator being uniquely formed and arranged to minimize noise of operation, and the entire assembly being uniquely constructed to minimize cost of manufacture.

Abstract: A valve assembly mountable in a debris strainer device installed in a steam piping system. The valve assembly includes a retractile valve stem cooperating with a conduit branch of the strainer device to form a short clearance chamber which restricts the amount of fluid which can collect in the chamber when the valve is closed. The valve stem is retractable initially to allow for substantially constant bleeding of discharge effluent prior to full retraction of the valve stem to fully open the valve for achieving "blow-off" or the blast of particulate discharge through the valve.

Abstract: A suction container for two hydraulic circuits, particularly for a steering circuit and a control circuit has a housing lower portion closed with a cover. A suction tube is inserted into the housing lower portion, which tube is connected to a first consumer line. The container also includes connections which are in communication with a second consumer line and with a fluid supply container. During operation the suction container is under predetermined pressure. A filter device is disposed in the cover before the connection to the second consumer line. A pressure-limiting valve and a reverse valve openable into the container housing are also mounted in the cover.

Abstract: A condensate removal device is disclosed which incorporates a strainer in unit with an orifice. The strainer is cylindrical with its longitudinal axis transverse to that of the vapor conduit in which it is mounted. The orifice is positioned inside the strainer proximate the end which is remoter from the vapor conduit.

Abstract: A strainer device for railroad car air brake combined dirt collector and cut out cocks, and arranged to be applied within the swirl chamber of such cocks, and between the collector bowl, about the pedestal thereof, and the lip of the cock throat chamber, which strainer device comprises an outer shell that is open and flanged at both ends, with one end of the outer shell being disposed adjacent the throat lip, an annular seal applied between the said outer shell one end and the throat lip, an inner shell disposed within the outer shell and secured at the other end of the outer shell and adapted to receive the cock collector chamber pedestal, and a compression spring received about the pedestal within the cock collector bowl and resiliently seated against the outer shell end flange at that end of same for spring biasing the other end of the outer shell and the seal against the throat lip.

Abstract: A governor valve for an automatic transmission comprising a valve body and a body support secured together and for rotation with an output shaft of the transmission. A line pressure passage connected to pressured fluid in the transmission and a governor pressure passage for operating the governor are formed in the body support, and passage means in the governor body connects the line pressure passage to the governor pressure passage. A normally closed valve is disposed in the passage means and normally blocks communication between the line pressure passage and the governor pressure passage, and the valve is operable to open in response to centrifugal force imparted thereto during rotation of the shaft to communicate the line pressure passage with the governor pressure passage and to actuate the governor.

Abstract: Coaxial bidirectional spool valves are provided for use in fluid systems such as hydrostat systems where flow can proceed in opposite directions, and which direct flow through a unidirectional or multidirectional function such as a filter assembly in the normal direction regardless of the direction of flow in the system. The valve includes a spool valve reciprocably movable between two limiting positions according to fluid pressure differential across the valve and engaging one of a pair of bungee followers in each position, thereby intercepting and controlling flow through a box junction of the fluid line with the lines leading to and from the filter assembly in a manner such that, regardless of the direction of flow in the fluid line, flow proceeds in the same direction in the connecting fluid lines to and from the function.

Abstract: An improved self-cleaning filter assembly for use in a solenoid-actuated valve of the type having a fluid pressure-operated diaphragm to control opening and closing of the valve. Control fluid under pressure is admitted from an inlet chamber of the valve into a control chamber at one side of the diaphragm to maintain the valve in a closed position, and this fluid pressure in the control chamber is relieved by actuation of a solenoid to open the valve. The self-cleaning filter assembly comprises a relatively rigid filter element for filtering the control fluid and a plurality of scraper blades mounted for scraping dirt, grit, or the like from the filter element each time the valve is opened or closed.

Abstract: The invention relates to method and apparatus for filtering engine coolant flowing in the cooling system of an automotive internal combustion engine. The method consists of constraining engine coolant which normally discharges from an overflow port in the cooling system radiator to pass through a filter into a reservoir, and of applying the suction normally produced at the overflow port as the cooling system cools to draw the filtered engine coolant back into the cooling system.

Abstract: A vent for a liquid drainage system comprising, a conduit having a lumen for drainage of liquid, and a filter pervious to air and substantially impervious to the passage of bacteria, with the filter communicating with the atmosphere. The vent has a valve assembly communicating between the lumen and the filter, with the valve assembly being movable between a first closed position to prevent passage of liquid from the lumen against the filter, and a second open position to permit passage of air between the atmosphere and the lumen through the filter.

Abstract: High energy loss fluid control is attained by subdividing flow of high pressure fluid into a plurality of individual streams in respective passageways having a long length to diameter ratio to impart high frictional resistance losses to the fluid flow, the passageways being in and between laminar surfaces and configurated along their lengths. For extremely high efficiency the passageways are in labyrinth formation.