Abstract: A fluid handling system and multi-positionable valving arrangement for use therein wherein a plurality of fluid source means such, for example, as a plurality of fuel tanks or the like, are adapted to be interconnected with a plurality of fluid utilization means such, for example, as a plurality of diesel engines or the like, in such a manner that fluid contained in a selected one or ones of the plurality of fluid source means can be directed to all or selected ones of the plurality of fluid utilization means, and wherein excess fluid which is unused by the fluid utilization means can be returned to the particular source means from which it was supplied or, in certain instances, can be returned to fluid source means other than that from which it was supplied.

Abstract: A differential pressure valve is proposed for a fuel injection system of an internal combustion engine. The differential pressure valve includes a diaphragm embodied as the movable valve element, which separates two chambers from one another. A fuel supply line discharges into one chamber and a valve seat carrier provided with a valve opening protrudes into this chamber. This chamber also houses a filter element and a valve spring is disposed coaxially with the valve seat carrier between upper and lower spring plates. The filter element is disposed such that a subsequent change in the tension of the valve spring is also possible. To this end, the filter element can engage the upper spring plate on one side in a sealing manner and on the other side can be supported in a sealing manner in a groove of the wall of the chamber (FIG. 1). In order to assure the free mobility of the filter element, it is provided with an elastically deformable area. As shown in FIG.

Abstract: A regulator installation, for controlling the pressure and/or flow of gas in a gas transmission or distribution system, comprising a compact module (10) having an inlet (32) and an outlet (33) adapted to be fitted in a pipeline (1) and containing within its outer shell (21,22,23) a removable assembly secured by locking means (29,30) and which carries the essential elements (2 to 9 and 43 to 45) of the regulator installation such that the gas flow path from the inlet (32) passes through the elements (2 to 5) to the outlet (33). The shell is provided with a removable cover (23) for gaining access to the control elements (6 to 9 and 43 to 45) and to the locking means (30) for enabling the assembly (31) to be removed for servicing and replacement.FIG. 2 is suggested as the drawing to accompany the Abstract.

Abstract: A fuel pressure regulator assembly comprising a housing, a diaphragm separating the housing into a first and second chamber. The housing has a radial inlet extending to the first chamber and a connector having an axial outlet is mounted in the housing and extends axially into the first chamber. The connector supports a sealing ring. The diaphragm supports a valve member that is adapted to engage the sealing ring, and a spring in the second chamber urges said valve member against the sealing ring. The fuel pressure regulator assembly includes provision for increasing the fuel regulation pressure by varying the effective diaphragm area.

Abstract: A control valve is provided which is adapted to be connected between a pressure source, such as vacuum pump, and a pressure vessel so as to control the pressure in the vessel. The valve comprises a housing having a longitudinal bore therethrough which is connected between the pump and vessel, and a transversely movable valve body which controls the air flow through an air inlet in the housing. The valve body includes cylindrical and conical shaped portions which cooperates with reciprocally shaped portions of the housing to provide flow control. A filter disposed in the air inlet filters out foreign matter in the air. The bottom end of the valve body screws into the valve housing control knob formed integrally with the valve body controls translation of the valve body and hence opening and closing of the valve.

Abstract: A back flow preventer for preventing contamination of a water supply. The preventer includes check valves which are enclosed in a casing comprised of a body and a single removable cover. The check valves are vertically disposed and spaced laterally from each other. The valves may be removed for servicing when the cover is removed without disturbing other parts of the device. Between the check valves is a relief valve which opens to drain the passage between the check valves when there is a drop in the supply line pressure sufficient to cause actual or potential reverse flow back toward the supply line. The check valves open by movement in opposite directions. Each check valve unit includes a tubular strainer through which all water must pass. The check valve units, while identically dimensioned as to the valve structure, include other parts of unequal dimensions which preclude accidental reversal of the units when being initially assembled or replaced after servicing.

Abstract: An automatic emergency stop apparatus which prevents counter flow and counter fire of gas bodies. The apparatus comprises a check valve, a cut-off valve and a filter unit. The check valve is positioned in the gas inlet portion of a decomposable closed-type valve casing. The check valve is opened only by inflow gas pressure. The cut-off valve engages with a portion of a safety apparatus operated by counter pressures created during counter flow and counter fire conditions. The safety apparatus causes the cut-off valve to automatically stop the flow of gas upon the application of counter pressure. The cut-off valve is positioned in the apparatus gas outlet. The filter unit, which is adapted to buffer the counter pressures caused during the production of the counter fire and to remove carbon sludges, is interposed between the check and cut-off valves.

Abstract: A check valve for a rock drill comprises a valve plate carrying a cylindrical strainer. An insert is carried by the valve plate and is movable between valve-open and valve-closed positions. A spring biases the insert to a valve-closed position. The insert unit includes a lid which engages and covers the top of the strainer in a valve-open position, and a bottom plate which covers the valve plate in a valve-closed position to prevent cuttings from fouling the valve mechanism.

Abstract: A control valve is provided with an inlet and outlet port and a variable flow control arrangement therebetween. The variable flow control arrangement is comprised of a hollow spool member having a plurality of orifices disposed in a spiral manner along the length of the spool and a sleeve having an annular valve member in contact with the spool movable axially of the spool to selectively expose one or more orifices to a valve chamber in communication with the outlet port. The sleeve member is connected to a flexible diaphragm having a first surface exposed to an atmospheric pressure chamber within the control valve and a second surface exposed to a signal vacuum chamber adapted to be connected to a vacuum supply. Spring means are provided in the signal vacuum chamber for normally biasing the sleeve into a position covering all of the orifices in the absence of a vacuum signal within the signal vacuum chamber.

Abstract: A multiple valve control device for use with a hydraulic walking mine-roof support frame, comprising a valve housing containing control valves which are disposed concentrically to a central axis around a central filter into which an axially-extending control-medium feed duct enters and from which radial bores extend in a star pattern towards the control valves, the said control valves, which are provided with valve pistons, being actuated via operating members from the valve-housing endface which is provided with a cover.

Abstract: The improvement in a blood filtration unit for filtering multiple units of blood comprising means for filtering air entering the unit.

Abstract: A self-cleaning filter assembly for use in a solenoid-actuated valve of the type having fluid pressure-operated diaphragm to control opening and closing of the valve, the diaphragm operating in response to fluid pressure admitted from the inlet chamber of the valve into a control chamber to maintain the valve in a closed position, and when the fluid pressure in the control chamber is relieved by actuation of the solenoid, to open the valve. The self-cleaning filter assembly filters control fluid admitted to the control chamber, and comprises a filter element cleaned by a brush each time the valve is opened or closed, thereby to prevent clogging of the filter during use.

Abstract: A valve of a type for use particularly in animal waterers. A valve body having a passageway extending therethrough has a valve stem disposed in the passageway. The valve stem has an enlarged portion on one end thereof having longitudinal slots therein and a valve head on the other end thereof for cooperation with a valve seat located at one end of the passageway of the valve body. A screen having perforate sides and an imperforate end is connected to the valve body and encompasses the valve head. A cylindrically shaped member is positioned inside of the screen and is sealed at one end thereof to the valve body and at the other end to the imperforate end of the screen. A single small hole passes through the cylindrical member at a place on the cylinder whereby the valve head must move past it during opening and closing thereof to thereby keep the opening from being closed due to the build-up of foreign particles or mineral deposits thereon.

Abstract: A pressure reducer has a housing with an inlet and an outlet. A valve disc is located in the housing and a valve stem reciprocally and sealably moves in the valve disc with the outer end secured to a resilient diaphragm. The inner end of the valve stem extends into the inlet and is secured to a tubular closure member which is sealingly positioned in the inlet and is engageable with the valve disc. The surface of the tubular member subjected to pressure in the housing is adpated to equal the combined subjected to opposed pressure surfaces of the tubular member in the inlet and the end of the valve stem to which it is secured. Screens are provided around the tubular member.

Abstract: A handle-carrying operating plug serving also a valve body-closing bonnet function, having a threaded internal engagement with the body, has a sliding relatively rotatable lost motion connection with an internal valving stem carrying a valving member, whereby the valving member, displaced to open position by plug-rotation in one direction, is permitted to advance in the body from an open position to a closed position under water flow or static pressure or/and spring bias, as the plug moves out upon rotation in the other direction for valve closing, and with a permitted further plug member rotation after valve closing, a drainage passage through the plug opens by relative axial motion of plug and stem; and by further rotation the plug is withdrawable for cleaning of a filter on the outlet side of the valving region in the body, the filter being plug-supported, spring biased to follow the plug to the body mouth, or merely body supported; ensuring a shut off condition when the valve body is opened for cleaning o