Abstract: A faucet assembly including pinch valves for controlling the flow of hot and cold water. A base is secured to the deck of a sink from above the deck and a body secured to the base completes the faucet housing. A spout extends over the basin and includes an outlet at its end. Two flexible tubes are connected to a mixing chamber near the outlet and extend through the spout and through the base for connection to hot and cold water conduits remote from the sink deck. The tubes are normally pinched closed adjacent the mixing chamber by springs, and operating levers at opposite sides of the spout rotate about a shaft and operate a linkage and valve mechanism for overcoming the spring forces to permit flow. Lost motion connections render the spring closing forces independent of lever position. A cross bar limits lever movement and provides a support surface against which the tubes are pinched. The tubes are located in the valve region by a block which serves as a barrier to leakage.

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.

Abstract: A faucet assembly including pinch valves for controlling the flow of hot and cold water. A base is secured to the deck of a sink from above the deck and a body secured to the base completes the faucet housing. A spout extends over the basin and includes an outlet at its end. Two flexible tubes are connected to a mixing chamber near the outlet and extend through the spout and through the base for connection to hot and cold water conduits remote from the sink deck. The tubes are normally pinched closed adjacent the mixing chamber by springs, and operating levers at opposite sides of the spout rotate about a shaft and operate a linkage and valve mechanism for overcoming the spring forces to permit flow. Lost motion connections render the spring closing forces independent of lever position. A cross bar limits lever movement and provides a support surface against which the tubes are pinched. The tubes are located in the valve region by a block which serves as a barrier to leakage.

Abstract: A pilot valve designed to regulate a main liquid flow valve disposed in a fluid system is disclosed having a diaphragm and sliding poppet assembly which is biased in one direction by a reference force and movable in the opposite direction in response to variances in regulated pressure sensed upon the diaphragm. The pilot valve includes integrally formed self-cleaning restrictors which dampen the operation of the valve to eliminate chatter as the pilot valve throttles to maintain the desired liquid flow level in the fluid system. Stability during operation is provided by a positive feedback force being applied to the pilot poppet which is of the same magnitude as the pressure which positions the valve member of the main flow valve. This positive feedback force significantly reduces phase lag between the pilot and the main flow valve, thereby increasing valve response to load changes.

Abstract: A product and method for packaging a flush valve on a display card wherein the valve is self-supporting on the card and the package requires no components or elements other than the valve and the card. The flush valve includes a flanged body portion received in an aperture in the card with the flange overlying a surface of the card. An elongated flexible lift strap extending from the valve is wrapped around the card and valve to hold the valve in place on the card. An end of the strap is frictionally retained in an opening in the card to maintain the strap in its wrapped condition.

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 reduced pressure principle backflow preventer includes downstream and upstream check valves separating an inlet and an outlet from an intermediate zone. A differential pressure relief valve maintains the intermediate zone at a pressure lower than the inlet pressure during potential backflow conditions and vents the zone during potential back siphon conditions. A unitary body member supports a pair of resilient annular valve members and is inserted into a vented housing bore and retained by friction to form the complete backflow preventer. Both valve members are retained on shoulders on the body member and are held between the shoulders and the bore wall. One valve member includes an axially movable portion cooperating with a downstream valve seat on the body to form the downstream check valve. The second valve member is cylindrical in form and is radially movable inward against an upstream valve seat on the body to form the upstream check valve.