Abstract: A toilet refill valve is described for refilling a water closet after each flushing, which produces minimal noise during the refill process. The valve includes a valve device which can open to pass water to a vertical outlet tube that empties into the bottom of the water closet. An anti-siphon air tube near the top of the outlet tube has an upper end open to the atmosphere and a lower end facing downwardly along the outlet tube. A restriction in the outlet tube below the air tube, causes water to fill the outlet tube and at least the bottom of the air tube for a water inlet pressure of at least 20 psi. The water at the bottom of the air tube prevents air from being dragged into the downwardly facing air tube, to avoid the noise that would result from such air flowing through the air tube and bubbling out of the bottom of the outlet tube.

Abstract: A valve assembly of non-metallic construction which requires no tools for disassembly and servicing. A plunger provided with longitudinal channels is activated by a double arm yoke which is acted upon by the float arm. Dual ports provide paired inlet streams directed away from the lever and float.

Abstract: The float operated control valve includes a one-piece molded plastic valve body having a valve chamber, a first cylindrical extension defining an inlet chamber in communication with the valve chamber, a second cylindrical projection defining an outlet chamber in communication with the valve chamber and disposed at right angles to the first cylindrical projection and a third cylindrical projection having a cylindrical passage in which a plunger is slidably mounted. The plunger has a valve member mounted on one end thereof within the valve chamber for engagement with a valve seat surrounding a passage between the inlet chamber and the valve chamber. A diverter plate is disposed at an angle to the axis of the first and second cylindrical projections for diverting the fluid entering the valve chamber from the inlet chamber toward the outlet chamber.

Abstract: A valve assembly for placement within a water receptacle such as a trough without alteration of the receptacle. A weighted body of the valve assembly retains the assembly against displacement. A float is tethered to a valve actuating arm in a yieldable manner to avoid damage upon accidental float contact by cattle. The weighted body has a removable closure to permit the adding of heavy material immediately prior to valve use. A tubular base of the valve assembly is adapted at one end to receive a hose fitting.

Abstract: A float operated valve is provided with the rise of a float being temporarily prevented by the elastic force of a spring mounted on the valve body. When the buoyant force of the float reaches a predetermined maximum buoyant force as a result of the water level rising and the float becoming increasingly submerged, the buoyant force of the float moves the spring and closes the valve. The valve is also shown with a twin float construction for on/off operation at low and high water levels.

Abstract: A float valve mechanism comprising a housing 13 defining a closed chamber 14 having an inlet 12 and an outlet 22. The chamber 14 is closed by a cap 17 threaded on to it. The valve head 32 has a conical surface 34 engaging a conical valve seat 33 and a skirt portion 30 a slightly smaller diameter than the outlet port 22 so that water flowing through the outlet is throttled as the valve nears its closed position. The valve head 32 can be formed separately, of rubber like material, and snap fitted on the valve stem 29.

Abstract: A ball cock and float assembly (10) having a shank portion (11) that is adapted to be insertably received through the inlet opening (13) in the bottom wall (14) of a reservoir tank (12). A support means (50) extends upwardly of the shank portion (11). The support means (50) comprises post means (30) that extend fixedly upwardly from the shank portion (11), and extension means (46) that are telescopically slidable along the post means (30). A lock (42) secures the extension means (46) at a selected position along the post means (30) to provide in gross adjustment in the vertical height of the float assembly (110) that is movable along the extension means (46). A valve (55) is carried by the extension means (46) upwardly of the float means (110). An inlet conduit (52) communicates from the shank portion (11) through the post and extension means (30, 46) to the inlet port ( 54) of the valve means (55).

Abstract: A differential pressure-actuated valve with a piston slidable to open or to close an inlet port. The piston slides in a cylindrical wall, and separates a bias chamber and a flow chamber. The piston is fitted with two oppositely-directed lip seals, one of which seals against bias chamber pressure, and the other of which scrapes particulate matter off of the wall. Optionally, an elongated filter extends from the piston into an inlet pipe where it filters water which flows to the bias chamber. The filter may have a perforated mesh wall, or a solid wall with an open end.

Abstract: A low pressure delivery system for cryogenic liquids is disclosed, the system being capable of providing a stream of a single-phase cryogenic liquid at a substantially constant low pressure, in the range of about 1 psi. The system comprises a container into which a cryogenic liquid, from a high pressure source, is directed. The liquid in the container is maintained at a substantially constant level by an automatic filling mechanism. The liquid does not occupy all the space within the container, the remainder of the space being filled by gas evaporating from the liquid. This gas communicates, by a suitable conduit, with a pressure regulator valve. When the gas pressure exceeds a predetermined level, the valve opens, relieving the excess pressure. By thus placing an upper bound on the gas pressure, the system places an upper bound on the pressure of the liquid withdrawn from the container. The automatic filling mechanism of the system establishes a lower bound on the liquid pressure.

Abstract: A fill valve for controlling liquid level in a toilet water tank or other tank includes a valve head assembly positioned at a selected level in the tank by a telescoping riser assembly with liquid inlet and outlet conduits extending toward the tank bottom. An adjusting nut on a stationary riser engages thread structures on inlet and outlet conduits for raising or lowering the valve head assembly and adjusting the liquid level. A main valve in the head assembly is controlled by a non-horizontal diaphragm separating a vent chamber and a control chamber. The control chamber is pressurized as liquid rises to the selected level by a standpipe extending downwardly in the tank. The valve closing and opening levels are offset by partly filling the vent chamber with liquid when the main valve is open to hydraulically load the diaphragm. A vacuum breaker valve obstructs backflow through the valve, vents the flow path when the valve is closed, and regulates flow into the vent chamber when the valve is open.

Abstract: A system for delivering cryogenic liquids at controlled low pressures is disclosed, wherein the liquid is withdrawn from the bottom of a container, and allowed to flow by gravity to the point of use. The system comprises an inlet conduit which directs a liquid cryogen into the container. The inlet conduit is connected to a float valve assembly which regulates the height of the liquid in the container. The vertical position of the float valve assembly is adjustable. The liquid cryogen is withdrawn from the bottom of the container, through an insulated outlet conduit. The pressure of the output liquid is determined by the vertical distance between the lower end of the outlet conduit and the liquid level in the container. Adjustment of the position of the float valve assembly therefore controls the output pressure. Gas bubbles that may form in the liquid tend to rise to the top of the container, so that the output is of a single phase, that is, an essentially pure liquid.

Abstract: YA flow proportioning control for proportioning flow from a water level sensing valve. A barrier is positioned downstream from the valve adjacent to a refill line. A restrictor ring is positioned on said barrier with a portion overlying the upper surface of the refill line. It is interchangeable so that by substituting rings of various sizes, various proportions of flow can be selected.

Abstract: The present invention is directed to a hydraulically balanced ballcock (10). A unique valve element (60) is translationally slidable within a valve housing (22) provided in the body (11) of the ballcock (10). A washer (74) received on the head (70) of the piston (61) in the valve element (60) moves in and out of engagement with a valve seat (85) presented from the valve housing (22) to effect closure and opening of the ballcock (10). A bore (95) extends through the piston (61) and stem portion (62) of the valve element (60) to communicate with a control chamber (125). Radial orifices (98 to 101) through a nozzle (73) that extends forwardly of the piston head (70) and through the washer (74) are located to communicate the pressure resulting from the venturi effect of fluid flow between the washer (74) and the seat (85) to the control chamber (15) by virtue of the bore (95).

Abstract: A non-chattering, float-controlled, pilot-operated diaphragm valve for controlling the flow of liquids from a conduit under pressure to a tank where the surface is in turbulent condition. The lightweight float and pilot valve follow the relatively high frequency fluctuations of level and the diaphragm valve responds causing a rapid opening and closing of the main flow through the conduit into the tank. The chattering is eliminated by the insertion of operative means between the float closure means and the movable diaphragm. A small diameter rod of selected length is positioned between the diaphragm and the closure means so that when the main flow through the conduit starts, the movement of the diaphragm away from the conduit forces the pilot valve to open and submerge the float to a considerable depth.

Abstract: A safety air gap system for an exemplary high volume evacuator having a water-sealed pump to provide suction thereto and including a gray water discharge from the pump to a drain, the system including a closed housing adapted to be mounted at a higher level than the evacuator, a reservoir for fresh water in the housing terminating a predetermined distance below the top, a coaxial pair of inner and outer tubes extending upward from the bottom of the reservoir and terminating above the top of the reservoir, the lower end of the inner tube receiving municipal water for discharge at the top to the outer tube which discharges the water at the lower end to the reservoir as controlled by a float-operated valve between the upper ends of the tubes, the housing having in one sidewall an outlet port connectable to a drain at a level below the top of the reservoir to prevent accidental filling of the housing with water in the event of a malfunction of the system, and an air gap opening positioned in a sidewall of the hou

Abstract: A diverter valve for a fluid storage tank such as the storage tank of a water closet is disclosed. In one embodiment, the diverter valve has a housing with an inlet passage for receiving a supply of water and a pair of outlet passages. One of the outlet passages delivers pressurized water from the diverter valve to the storage tank, and the other outlet passage delivers the pressurized water to a diversion conduit connected to the toilet bowl rim. The diverter valve also includes a movable flap mounted within the diverter valve which moves to proportion the flow of water between the two outlet passages in response to changes in the water level of the tank. The flap is initially positioned to direct water to the tank when the tank water level is high. The flap is then moved by a water level sensor such as a float to direct water to the bowl rim when the water level in the storage tank has dropped below a pre-determined diversion level. Flow to the bowl rim continues even after the tank has emptied.

Abstract: A toilet holding tank water inlet valve of the type utilizing a flexible valve element formed as a portion of a pressure chamber and having a control stem associated with the pressure chamber and a pivot arm associated with the control stem is improved by molding a portion of the pressure chamber to tightly grip the control stem and attaching a vertical member to the pivot arm with a float which can move along the vertical member. An upper float stop is positioned near the uppermost end of the member and a lower float stop is positioned near the lowermost end of the member.

Abstract: A ballcock assembly adaptable for use in a variety of sizes and types of toilet flush tanks. The ballcock assembly comprises a standpipe having a ballcock valve at its upper end and having an adjustable height mechanism for varying the height of the ballcock valve in a toilet flush tank. The ballcock valve is a positive closing valve which includes a valve element movable to an open position against the pressure of the supply water by means of a valve actuating member that is pivotally connected to the standpipe and that is also connected to a float unit which surrounds the standpipe unit. The standpipe includes a hush tube which conveys water to the bottom of the toilet flush tank. The hush tube carries water distribution control means which functions to control the proportion of water delivered to the toilet flush tank and to the bowl refill.

Abstract: A horizontal water inlet tube is inwardly connected reversely through a valve within a horizontal valve housing and from the valve housing downwardly into a generally vertical water outlet tube. The valve is controlled by a valve control arm projecting generally horizontally from the valve housing downwardly connected through a float connector to a float vertically slideable on a float guide extending downwardly from the valve housing. A diverter at the upper end of the water outlet tube receives water flow generally horizontally from the valve housing into a pair of spaced, downward helical grooves directing the flow spirally into a pair of spaced vertical grooves for ultimate discharge downwardly through the water outlet tube. The diverter vertical grooves are larger in cross-section than the respective helical grooves and are formed by radial plates converging centrally to a cylinder at groove upper portions and an inverted cone at groove lower portions, each vertical groove occupying in the order of 120.

Abstract: An energy saver control system for prevention of water freezing in an outdoor tank, such as a stock tank, which involves a conventional type of water level control valve to maintain a selected level of water in the tank, and an electrical switch which is controlled by the pressure which is in the water line leading to the water level control valve. Means are provided to control the rate of water flow into the tank to a selected low value, sufficient for prevention of freezing of the surface of the water in the tank. When water is flowing into the tank the electrical heater is cut off. The electrical switch is controlled by the pressure in the water line leading to the water level control means.

Abstract: A fill valve for controlling liquid level in a toilet tank or other tank includes a housing with an inlet, an outlet, a valve, and a level sensing mechanism for opening the valve to permit flow when the liquid level is below a predetermined value. A flow impedance path including a compact array of many baffles defining multiple consecutive right angle turns dissipates fluid pressure without substantial velocity increases and consequent cavitation and noise. Stable valve closure when the predetermined level is reached is effected by the mounting and configuration of a valve control lever. The fill valve may be disassembled for service without removal from the tank. A coupling and mounting nut assembly facilitates mounting without tools in a variety of tanks. A backflow preventer including few simple parts may be incorporated to provide redundant cross-connection protection.

Abstract: A valve is provided for controlling fluid flow between the inlet and outlet of a closed valve housing. A stationary insert body in the housing includes a through channel with cross channels extending transversely therefrom. The latter open on the inner side of an expansible U-shaped ring which surrounds the periphery of the insert body and is spaced from the wall of the valve housing. A piston is movable to close the outlet of the through channel so as to increase the pressure in the cross channels and cause expansion of the ring to close off the passage around the insert body between the inlet and outlet.

Abstract: A pilot operated ball cock valve for controling the height of fluid in a tank. The rotary pilot valve has an inlet port and an outlet port which are interconnected and communicate with a fluid channel which bypasses an evacuation chamber and a diaphragm valve permitting fluid to flow directly to the inlet port of the rotary pilot valve. The outlet port of the rotary valve is positioned by a predetermined fluid height in the tank into alignment with a fluid channel which transmits fluid pressure into a pressure chamber above the diaphragm. Such positioning allows fluid pressure to act upon the diaphragm which closes a discharge orifice thereby preventing flow of fluid into the tank. A decrease in fluid height in the tank induces the rotary pilot valve to rotate such that the outlet port will move out of alignment with the fluid channel leading into the pressure chamber.

Abstract: This invention relates to a novel and original water standpipe for toilet sump tanks, including multiple discharger-silence device water standpipe of sufficiently novel characteristics to distinguish it from the prior art.

Abstract: Most valve assemblies used in water closet tanks are relatively bulky and often interfere with the operative action of the tank. Furthermore, such valve assemblies are noisy in operation and "wire drawing" effects cause considerable wear of the valve seat and/or valve. This device includes a flexible diaphragm engageable with an annular valve seat and acting as a valve between the water intake and the interior of the tank. A spherical segment cam is mounted in the assembly operatively connected to a float and connecting rod moving reciprocally. The cam operates a plug sliding reciprocally in the body of the valve assembly, said plug engaging the diaphragm and controlling the opening and closing of the diaphragm with the valve seat. The mechanical advantage of the spherical segment cam gives a positive closing action plug minimizing the "wire drawing" effect and the construction of the diaphragm and associated parts eliminates thumping and hissing during the closing action.

Abstract: An end of an inlet tube communicates through a tank wall with a water supply and an inner end of the inlet tube communicates through a float controlled valve with a generally vertically downwardly extending outlet tube. Thus, the tank water level through the float controls closing and opening of the valve admitting water through the inlet tube, through the valve and down the outlet tube flowing into the tank from the outlet tube lower end. The outlet tube is selectively vertically adjustable to adapt to various depths of tank by being formed of telescoped parts normally retaining a determined telescoping by a projection of one part being radially interengaged in a groove of the other part. Depending on the particular construction, the tube part telescoping may be selectively varied by either relative rotation between the parts or by disengaging and reengaging the interengagement between the parts. Through a slot and lock collar arrangement, the tube parts may be totally telescopically separated.

Abstract: A float controllable valve responsive to the level of condensate having a housing with an internal chamber including an input supply opening and a discharge opening. There is a membrane capsule disposed in the interior of the housing and formed with at least a first throttle inlet bore communicative to the interior of the membrane capsule with the internal chamber of said housing at a pressure side. The membrane capsule includes a rigid inlet nozzle extending into the interior of the membrane capsule and has a nozzle bore communicating with the discharge channel. The inlet nozzle has a valve seat in the interior of the membrane capsule between the throttle bore and the nozzle bore. A locking member is slidably disposed and extends into the interior of the membrane capsule and has one end in sealing contact with the valve seat.

Abstract: A ballcock assembly in which a sheath extends upwardly through the fluid within a reservoir tank to support a valve mechanism above the normal level to which fluid will rise in the reservoir tank. An inlet tube which connects a fluid supply line to the valve mechanism extends through the sheath and is wholly isolated from the fluid within the reservoir tank by the sheath. The outermost lateral dimension of the inlet tube and the innermost lateral dimension of the sheath are such that the inlet tube is completely circumscribed by an air space comprising a passageway that extends the full axial extent of the inlet tube between its effective connection to the valve mechanism and its effective connection to a fluid supply line. The passageway is required to communicate with atmosphere at a level beneath the fluid in the reservoir tank and may also communicate with atmosphere at a level above the normal level to which fluid will rise within the reservoir tank.