Abstract: A flush valve diaphragm that includes a body portion and a peripheral sealing portion. The body portion is flexible and has a central passageway. The peripheral portion includes an integral filter, an exit chamber, and a bypass arrangement, such that water flowing through the filter flows through the bypass arrangement. The integral filter prevents clogging of the bypass arrangement. The diaphragm is used in a flush valve diaphragm assembly and a flush valve.

Abstract: A diaphragm assembly for use in conventional diaphragm-type flush valves includes a flexible diaphragm body having a first side and a second side and a bypass orifice filter insert defined in the diaphragm body. The second side of the diaphragm body includes an annular protrusion and a plurality of protruding ribs, wherein a recess area is defined between the rib and the protrusion. When a pressure difference is applied across the diaphragm body, the second side of the diaphragm body is concave and the first side of the diaphragm body is convex, whereby a distance between the rib and the protrusion decreases in order to prevent the diaphragm body from closing two quickly against a valve seat of a flush valve. A method for controlling pressure differences across the diaphragm body is also disclosed.

Abstract: The fluid inlet device for a column includes an inflow stub and a deflection unit. The deflection unit includes an input zone with a plurality of inlet passages of constant cross-sections that merge into diffuser-like passages formed by curved guide lamellae. The curved guide lamellae diffuse the flow of fluid from the lateral passages laterally and circumferentially of the column to separate a high density phase, such as liquid drops, from a low density phase, such as a gas, under centrifugal force. The curved lamellae also direct the flow of fluid from the central passages downwardly of the column.

Abstract: Fluid sensing shut-off devices with timer and methods of operation to shut off fluid flow if a primary shutoff valve sticks in the on condition. An embodiment is disclosed using a microphone to sense fluid flow, with a microprocessor periodically awakening from a sleep mode to power the sensor and determine if there is flow. If there is flow, the microprocessor times flow, and if flow is not shut off within a predetermined length of time, the microprocessor shuts off the valve. The valve itself normally held in a magnetically latched, valve open state, but may be unlatched by a current pulse to close the valve. Various embodiments and applications are disclosed.

Abstract: A system operating in an environment under a vacuum draw in which liquid accumulates utilizes the weight of the liquid to discharge the liquid from the system. The system includes a first holding tank and a second holding tank interconnected by a liquid passageway and a pressure equalization passageway. A number of valves are provided for controlling flow into and out of the second holding tank. The valves are operated in a sequence to use gravity to bring accumulating liquid from the first holding tank to the second holding tank in the vacuum environment, and then to discharge the liquid from the second holding tank to the environment outside of the system.

Abstract: An improved one-way fluid valve construction is provided. A valve housing (102) includes one or more valve ports (108) and control ports (110). A control member (304) is disposed within the control port (110). The control member (304) is movable within the control port (110) between a first position and a second position. A control rod (302) can extend between the control member (304) and a portion of the valve port (108). A control rod coupling (402) interacts with the control member (304) to cause a rotational or pivotal movement the control rod (302) through a predetermined angular arc in response to movement of the control member (304). A sealing face (404) formed on a second portion of the control rod (302) advantageously forms a seal with an orifice (316) that separates an input side of the valve port (108) from an output side. The seal can be formed when the control rod (302) is in a control rod sealed position.

Abstract: A sanitary fluid pressure control valve, including a valve body having an input side and a discharge side with a restricted chamber therebetween, and a reciprocable plug extending through the restricted chamber with one plug end on the input side and the other plug end on the discharge side. A diaphragm is secured to the one plug end, and defines a pressure chamber adjacent the discharge side. A fluid passage in the plug extends through the restricted chamber, and has an outlet adjacent the diaphragm and an inlet spaced from the plug other end. The pressure in the pressure chamber relative to the pressure in the discharge side substantially controls the position of the plug. In a first plug position, the fluid passage inlet is substantially blocked in the restricted chamber. The plug is reciprocable from the first position to fluid flow positions in which the fluid passage inlet is variously exposed on the input side.

Abstract: A sleeve valve comprising a conduit, a gate, and a shut-off member. The conduit and the shut-off member are fixed in position relative to each other. The gate is movable relative to the shut-off member between opened and closed positions. The gate engages the shut-off member when the gate is in the closed position in a manner preventing fluid from flowing through the fluid passageway of the gate. The opened position of the gate allows fluid to flow through the valve. The valve is devoid of any structure within the fluid passageway of the gate attaching the shut-off member to the conduit.

Abstract: A quick exhaust valve is preferably constructed having a port connector, an input body, and an exhaust body. The input body and exhaust body are preferably arranged in a rotatable relationship with the port connector such that an input port of the input body can be arranged in a desired orientation with respect to a connected device and still permit communication between ports in the input and exhaust bodies and a port in the port connector.

Abstract: A fluid conduit connector apparatus that the approximates pneumatic characteristics of a removed pneumatic system component when a fluid conduit is removed from a pneumatic system. The fluid conduit connector apparatus includes a port portion having a valve disposed therein. The valve closes to provide a reduced fluid orifice when a fluid conduit is removed from the port. The reduced fluid orifice is configured to provides pneumatic characteristics of the device being disconnected to facilitate uninterrupted operation of a timed pressure source having pneumatic sensing capability.

Abstract: A valve assembly, such as a tap for a liquefied gas cylinder, includes an overfill protection device and a liquid level gauge having an electrode assembly comprising a pair of lamellar electrodes mounted closely adjacent a housing member of the overfill protection device and deflectable into close proximity with a float of the overfill protection device for insertion into the gas cylinder. A circuit board is provided, preferably mounted on the electrode assembly, and has an electronic converter circuit for measuring the electrical capacitance between the electrodes and producing in response to the measured capacitance an output signal representative of the liquid level in the container. A display means is mounted on a body of the valve assembly or remote therefrom, to indicate the liquid level in the container in response to the output signal from the electronic converter circuit.

Abstract: An improved chemical dispenser includes a plurality of eductors for drawing chemical into a diluent to produce an effluent, each eductor of the plurality selectively discharging via a baffle tube into a single common discharge tube. The effluent flow parameters are insufficient to cause effluent from a selected eductor to flow into a chemical source coupled to a non-selected eductor, and are insufficient to draw chemical from a non-selected eductor into the effluent from a selected eductor.

Abstract: A constant flow valve has a chamber (6) provided therein with a first diaphragm (8) having a valve member (7), a second diaphragm (9) and a third diaphragm (10). The chamber is divided into a first pressure chamber (11), a second valve chamber (12), a first valve chamber (13) and a second pressure chamber (18). The first pressure chamber has means for applying a constant inward force to the second diaphragm, and the second pressure chamber has means for applying a constant inward force to the third diaphragm. The first valve chamber is communicated with an inlet channel, the second valve chamber has a valve seat (27) corresponding to the valve member, and the valve seat divides the chamber into a bottom valve chamber (14) communicating with the first valve chamber through a communication hole formed in the first diaphragm and a top valve chamber (15) communicating with an outlet channel.

Abstract: A connector having a male-side connection section, a liquid flow section where a liquid flow space communicating with the inside of the male-side connection section is provided, a first female-side connection opening and a second female-side connection opening, and a first valve body and a second valve body that are made from an elastic material. A side slit of the first valve body and a side slit of the second valve body face the liquid flow space. When a tube body is connected to the first female-side connection opening, the inside of the tube body and the inside of the male-side connection section are communicated through a top slit, the side slit, and the liquid flow space. When a tube body is connected to the second female-side connection opening, the inside of the tube body and the inside of the male-side connection section are communicated through a top slit, the side slit, and the liquid flow space.

Abstract: A valve is provided with a valve housing encompassing a pressure chamber and possessing at least two valve ports which open into the pressure chamber, whereby, in the pressure chamber at least one axially slidable valve stem exists, which controls at least one of the valve ports and which the at least one valve stem is movable between a closed position and an open position. The valve further encompasses at least one wire or band shaped SMA element, the element having an SMA, as well as possessing a resetting element for the movement of the valve stems into the closure direction. The valve seat carries on its first end a port closing closure disk, whereby its second end is axially guided within the pressure chamber on a base plate which the plate extends itself transversely to the valve stems.

Abstract: Pressure regulators find uses in a variety of applications such as, for example, pneumatic tools, water systems, and paintball markers. Pressure regulators may substantially benefit from a separate seal carrier adapted to facilitate maintenance, improve performance, and open independent of piston movement; poppet bypass bores to increase regulated fluid flow; and, an outlet poppet adapted to operate independent of the piston.

Abstract: A freezeless hot and cold outdoor hydrant having a hot water inlet and a cold water inlet and a single water outlet elbow. The hydrant has a hydrant body including a mix cavity chamber. The single water outlet is swivel mounted to an end of said hydrant body such the hydrant can be mounted in a vertical orientation with the hot and cold water inlets above the outlet or the hydrant can be mounted in a horizontal orientation with the outlet swiveled approximately 90 degrees and with the hot and cold water inlets horizontally oriented beside the outlet. Two horizontal orientations are possible, depending upon the swivel angle of the outlet elbow. One horizontal orientation has the hot water operator on the left side of the hydrant and the other horizontal orientation has the hot water operator on the right side of the hydrant.

Abstract: A valve system for use in a system including a first source of a first pressurized fluid and a second source of a second pressurized fluid includes a valve housing including a first inlet port adapted to be placed in fluid connection with the first source, a second inlet port adapted to be placed in fluid connection with the second source and an outlet port. The valve system further includes a backflow prevention system to prevent flow of the first pressurized fluid through the second inlet and to prevent flow of the second pressurized fluid through the first inlet port. The valve system is adapted to provide a fluid path between at least the first inlet port and the outlet port to enable fluid to be drawn from the outlet port to the first inlet port. Several of the valve systems of the present invention provide for flow from the first inlet port to the outlet port and concurrent flow from the second inlet port to the outlet port.

Abstract: What is provided is a flow shut-off element, particularly for use in the medical field of peritoneal dialysis, consisting of a valve body (2) having an inner cavity (3) and a plurality of accesses (4, 5, 6); a selector having a projecting portion inserted into the inner cavity of the valve body and movable relatively to the latter into a predetermined number of operating positions to create predetermined paths in which the fluid flow is permitted and/or shut off between the said accesses. Also provided is an auxiliary element interposed in a removable way between the valve body and the selector, this element having positioning means to enable an operator to determine when one of the said predetermined operating positions of the selector has been reached.

Abstract: A stub-out assembly includes a stub-out conduit that defines a major diameter and a minor diameter. The minor diameter defines an attachment groove for receipt of a mount housing and a valve housing. The mount housing includes a multitude of circumferential fingers which each include a barbed end that engage a corresponding internal groove within the valve housing of the valve assembly. The mount housing fits over the minor diameter and a retainer in the mount housing is aligned with the attachment groove. The retainer includes a partially annular set of conduit attachment legs and a set of housing attachment legs. The conduit attachment legs engage the attachment groove to axially retain the conduit therein. The housing attachment legs each include a barbed end which engage a corresponding surface located within the slot.