Abstract: A multi-operation discharge control device is provided, the device includes a lower housing having a water inlet and outlet, a valve set slidably and axially disposed in the upper portion of the lower housing, a manual operation system slidably and transversely disposed into a lateral extension opposite to the water inlet of the lower housing, an upper housing axially connected to the lower housing including an automatic operation system therein. The automatic operation system contains an electromagnetic valve and an IC plate. Thereby the valve set is selectively actuated manually or automatically to move upward to define a water passage in the lower housing permitting the water to flow from the water inlet to the water outlet of the housing.

Abstract: A diaphragm type of flush valve for use with toilet devices such as urinals and water closets includes a body having an inlet and an outlet. There is a valve seat between the inlet and outlet and a valve member is movable to a closing position on the valve seat to stop flow between the inlet and outlet. The valve member includes a diaphragm assembly peripherally attached to the body. There is a pressure chamber above the diaphragm assembly for holding the valve member on the valve seat. A filter and bypass orifice in the diaphragm assembly connects the inlet and the pressure chamber. The filter includes a circumferential filter ring attached to the underside of the diaphragm and positioned adjacent its periphery. The ring has a plurality of circumferentially spaced filter grooves in communication with the inlet.

Abstract: A diaphragm type of flush valve for use with toilet devices such as urinals and water closets includes a body with an inlet and an outlet and there is a valve seat therebetween and a valve member movable to a closing position on the valve seat. The valve member includes a diaphragm which is peripherally attached to the body. There is a pressure chamber above the diaphragm for holding the valve member on its valve seat and there is a filter and a bypass orifice connecting the inlet and the pressure chamber. The filter includes a filter ring positioned beneath the diaphragm and adjacent the outer periphery thereof. The filter ring and the diaphragm are held in a fixed position relative to each other. The filter ring has a plurality of outwardly directed circumferentially spaced filter grooves. There is a seal ring between the filter ring and the body and facing the grooves.

Abstract: A flush valve includes a body with an inlet, an outlet, a valve seat at the outlet, and a piston movable in the body toward and away from the valve seat to control flow through the outlet. The piston has a chamber and there is a refill orifice in the piston connecting the chamber with the body inlet. Pressure in the chamber maintains the piston closed upon the valve seat. A relief valve in the piston vents the chamber to the outlet to permit the piston to move away from the valve seat to open flow from the inlet to the body outlet. The piston has a guide portion which extends downstream of the valve seat when the piston is in the closed position. The guide portion of the piston has a plurality of outwardly extending axial ribs, the outer surface of which is radially in alignment with the path of flow through said valve seat.

Abstract: A flush valve has a body with an inlet and an outlet and a passage connected therebetween. There is a valve seat at one end of the passage and a valve assembly is positioned to close upon the valve seat. The valve assembly includes a diaphragm positioned to control the flow of water through the passage, a guide member attached to the underside of the diaphragm and positioned within the passage, and a refill ring attached to the exterior of the guide member. The refill ring has a discontinuous outer wall which includes a plurality of spaced wall segments extending toward the flush valve passage and providing yielding frictional resistance to movement of the valve assembly relative to the passage to thereby dampen vibrations of the valve assembly during closing portions of the flush valve operating cycle.

Abstract: A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets has a body with an inlet and an outlet. There is a valve seat between the inlet and the outlet and a valve member is movable to a closing position on the valve seat to stop flow through the flush valve. The valve member includes a diaphragm which is peripherally attached to the body and there is a pressure chamber above the diaphragm for holding the valve member on the valve seat. A bypass orifice connects the inlet and the pressure chamber. The diaphragm has a vent passage connecting the pressure chamber and the outlet. There is an auxiliary valve closing the vent passage, with the auxiliary valve including an auxiliary valve head and a stem extending downwardly therefrom. The auxiliary valve head has a bore with a lower open end. The bore has a first portion with a first diameter and a second portion with a larger diameter. The second portion of larger diameter is adjacent the lower open end of the bore.

Abstract: A toilet flushing device has a body with an inlet and an outlet. There is a valve seat in the body in the flow path between the inlet and the outlet and a valve in the body movable toward and away from the valve seat to control water flow through the toilet flushing device. A handle assembly for causing movement of the valve toward and away from the valve seat includes a socket attached to the body and a handle mounted in the socket for pivotal movement. A plunger is positioned in part within the socket and is in contact with the handle. Pivotal movement of the handle causes axial movement of the plunger with a portion of the plunger being positioned for contact with valve for causing movement thereof. There is a spring for biasing the plunger toward the handle. A bushing is attached to the socket and has a central bore within which the plunger moves. A seal member is attached to the bushing and forms a seal therewith.

Abstract: A flush valve for use on toilet devices such as urinals and water closets has a body with an inlet and an outlet and a connecting passage. There is a valve seat at one end of the passage and a diaphragm is positioned to control the flow of water through the passage and close upon the valve seat. A guide member is attached to the underside of the diaphragm and positioned within the passage. There is a refill ring attached to the guide member. The refill ring has an upstream end which is peripherally spaced from the passage when the diaphragm is closed on the valve seat. The refill ring has a downstream water flow control portion having a plurality of first water flow paths which, when the diaphragm is away from the valve seat, provide the major water flowway between the inlet and the outlet. The refill ring water flow control portion has a plurality of second water flow paths, parallel with the first water flow paths, which are formed to provide a smaller volume of flow than said first water flow paths.

Abstract: A toilet flushing device includes a body which has an inlet and an outlet. There is a valve seat in the body in the flow path between the inlet and the outlet and there is a valve member movable within the body toward and away from the valve seat to control water flow through the flushing device. A handle assembly is mounted on the body for causing movement of the valve member. The handle assembly includes a socket attached to the body and a handle mounted in the socket for pivotal movement relative thereto. A plunger is positioned in part within the socket and is in contact with the handle. Pivotal movement of the handle causes axial movement of the plunger, with a portion of the plunger being positioned for contact with the valve member. There is a spring biasing the plunger toward the handle and there is a bushing attached to the socket and having a central bore within which the plunger moves. A seal slide is mounted on the plunger and is in sliding engagement with the bushing as it moves relative thereto.

Abstract: A diaphragm for flush valves has a plurality of concentric reinforcing rings spaced closer together at the smaller diameters of the diaphragm than at the larger diameters. The reinforcing rings have a geometrically progressive spacing from the inside to the outside of the diaphragm so as to provide maximum hoop stress reduction with a minimum amount of material.

Abstract: A flush valve includes a body with an inlet and an outlet and a valve seat at the outlet. There is a valve movable in the body toward and away from the valve seat to control flow through the flush valve. There is a chamber in the body above the valve and there is a refill orifice in the valve connecting the chamber with said body inlet. Pressure in the chamber maintains the valve closed upon its valve seat, with the size of the refill orifice controlling the time to fill the chamber from the inlet which determines the time of flow of water from the inlet through the outlet. There is a relief valve for venting the chamber to the outlet when the relief valve is open, thereby causing the valve to move away from its seat permitting flow from the inlet through the outlet. There is a cover threadedly attached to the body and a seal element formed from an elastomeric material positioned between the cover and the body.

Abstract: A reaming pin (70) is provided in a control orifice (34) by which pressure from a main chamber (26) is communicated to a control chamber (36) so as to provide force to hold a main valve member in the form of a flexible diaphragm (12) against a valve seat (14) and thus prevent fluid from flowing from the main chamber (26) to an outlet orifice (32). The control orifice (34) is displaced from the center of the diaphragm (12), but the reaming pin is so provided as to cause the variation in the lateral spacing between the pin (70) and the control-orifice walls to be less than it would be if the reaming pin were a straight, inflexible member rigidly mounted perpendicularly to the plane of the valve seat (14). In one version, the pin (70) is mounted on the diaphragm (12) itself and thus moves laterally with it. In another version, the pin (70') is pivotably mounted on the valve body so as to permit such motion.

Abstract: A flush valve includes a body with an inlet and an outlet and a valve seat at the outlet. There is a valve movable in the body toward and away from the valve seat to control flow through the flush valve. There is a chamber in the body above the valve and there is a refill orifice in the valve connecting the chamber with said body inlet. Pressure in the chamber maintains the valve closed upon its valve seat, with the size of the refill orifice controlling the time to fill the chamber from the inlet which determines the time of flow of water from the inlet through the outlet. There is a relief valve for venting the chamber to the outlet when the relief valve is open, thereby causing the valve to move away from its seat permitting flow from the inlet through the outlet. There is a cover threadedly attached to the body and a seal element formed from an elastomeric material positioned between the cover and the body.

Abstract: The flush valve has in its inlet pipe of its main body a turnable knob, a hollow pipe-like filtering net provided on one side of an adjusting through hole opposite to an adjusting knob, and an elastic element and a pad provided inside the filtering net, water pressure will push away the pad and compress the elastic element to get into the filtering net for filtering out impurity in water and then get into the main body, when the valve is closed, the pad will cover the adjusting through hole by restoring force of the elastic element and the reversing water flow, the reversing hammering created by abrupt stopping of water will be absorbed by the pad, its pipe structure can thus be prevented from damage and leaking, the filtering net can be dismounted for cleansing and maintenance easily.

Abstract: An automatic flushing device for a urinal has a sensor, a valve assembly for water supply and a control circuit board. The valve assembly comprises a housing having a chamber for receiving a valve, and a chamber for receiving a valve drive. The housing also has an inlet socket and an outlet socket. The valve has a sleeve with an upper portion of a small diameter and a lower portion of a large diameter and an open bottom. The sleeve has inlet port in the upper side wall and a inlet hole in the top portion. A piston is arranged in a reciprocating manner within the upper portion of the sleeve. The piston has an upper piston section provided with a plurality of inlets and a lower piston section provided with an outlet. A relief valve is mounted within the outlet of the piston. A truncated cone spring presses the relief valve down into its closed position. A coil spring installed between the upper piston section and the top portion of the sleeve biases the piston in a downward direction against a bushing.

Abstract: A flush valve for use with toilet devices such as urinals and water closets includes a body having an inlet and an outlet. There is a valve seat between the inlet and outlet and a barrel connects the valve seat with the outlet. A diaphragm assembly is positioned within the flush valve and movable toward and away from a closing position on the valve seat to control the flow of water to the outlet. The diaphragm assembly includes a diaphragm peripherally clamped within the flush valve housing and a refill ring extending downstream from the diaphragm. The refill ring has a plurality of circumferentially disposed passages connecting the inlet and outlet when the diaphragm assembly is away from the valve seat. The size of the passages in the refill ring determines the volume of water flow during operation of the flush valve.

Abstract: A diaphragm-type of flush valve for use with toilet devices such as urinals and water closets has a body with an inlet and an outlet and a valve seat therebetween. There is a valve member movable to a closing position on the valve seat to stop flow between the inlet and the outlet. The valve member includes a diaphragm peripherally attached to the body, a refill ring attached to the diaphragm for controlling water flow to the outlet and a retaining disc which is used to attach the refill ring to the diaphragm. There is a pressure chamber above the diaphragm for holding the valve member on the valve seat. A filter and bypass orifice connect the inlet and the pressure chamber, with the bypass orifice being formed in the retaining disc and the filter being formed in part by a portion of the diaphragm.

Abstract: A toilet device flush valve has a body with an inlet and an outlet and a valve seat in the body positioned therebetween. There is a movable diaphragm which closes upon the valve seat to control flow between the inlet and the outlet. A piston is attached to the movable diaphragm and there is a flow control ring mounted on the piston. The flow control ring includes water passages forming the sole flow path between the inlet and the outlet when the piston is in the open position. The passages on the flow control ring are sized to correspond to the desired flow rate through the flush valve. The passages extend in a direction to give the water flowing therethrough both axial and circumferential components to dissipate power in the water flowing through the flush valve to provide a relatively constant flow rate which is independent of the water pressure applied at the flush valve inlet.

Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.

Abstract: A unitary diaphragm assembly for use in conventional flush valves. The diaphragm assembly has a flexible diaphragm which includes a seating portion and a mounting portion at the outer peripheral edge. A flow ring is positioned adjacent to the seating portion of the diaphragm. An elongated barrel member extends from the diaphragm in a longitudinal direction and includes a plurality of radial guides positioned circumferentially around the outer surface of the barrel member along a portion of the length of the barrel member. A second embodiment has a flexible diaphragm connected to a cylinder slide. The cylinder slide includes a longitudinal barrel member with a relief valve positioned in the interior of the lower portion of the barrel member.

Abstract: A bypass orifice and filter for use in the diaphragm of a toilet room flush valve includes an orifice member adapted to be mounted in the flush valve diaphragm, and a filter element attached to the upstream side of the orifice member. The orifice member has a metering restriction to limit the flow of water therethrough and the filter element has a plurality of openings therein in communication with the orifice member metering restriction. The smallest dimension of the openings in the filter element are less than the smallest dimension of the metering restriction so that any particle in the water passing through the filter element will pass through the metering orifice. In some embodiments the orifice member and filter element are an integral unit.

Abstract: A flush valve body has a passage which connects the inlet and outlet. There is a valve seat at one end of the passage and a diaphragm is positioned to control the flow of water through the passage and to close upon the seat. A guide member is attached to the underside of the diaphragm and a refill ring is attached to the guide member. The improvement is specifically directed to the exterior of the refill ring which has a plurality of recesses to channel the flow of water through the flush valve passage. The recesses have a portion of constant size and a portion of gradually changing size. There are fins which separate the recesses and the fins are always in contact with the interior of the passage. The stroke of the diaphragm when moving between fully open and fully closed positions is approximately one-half of the axial length of the refill ring.

Abstract: A metering valve for water faucet that is triggered at the water discharge by a light touch on the trip stem so that the hand that triggers the valve is ready at the washing position at the start of the water flow. The disclosed metering valve consists of a trip stem which penetrates through the valve outlet port to the exterior of the valve. There is a pressure chamber wherein the pressure controls the open and closure of the valve. The pressure in the pressure chamber is determined by means of feed and bleed. In the closure mode the bleed opening is blocked and the pressure chamber is pressurized by the water supply through the feed. A light touch on the trip stem causes the bleed to open and a depressurization in the pressure chamber. This opens the valve and starts a metering cycle. After the trip stem is release, the bleed is blocked again and the pressure chamber starts to recover its pressure slowly through the feed flow path.

Abstract: An automatic faucet is disclosed which includes a faucet body having a water discharge end and sensors mounted on the faucet for sensing the presence or absence of an object adjacent the faucet. A water supply valve is located in the faucet body which includes a diaphragm type primary valve to control discharge of water from the faucet. Operation of the prinmary valve is controlled by a motor operated in response to a signal produced by the sensor when an object, e.g., hands, are placed beneath the faucet.

Abstract: A flush control assembly for delaying the flush cycle of pressure flush valves for use on plumbing fixtures. The flush control assembly attaches to, and becomes an integral working part of the flush valve and contains a delaying means which is actuated by water pressure differentials in the flush valve.

Abstract: A refill ring for use in a diaphragm-type flush valve is mounted upon the guide member of the diaphragm assembly. The refill ring has an outer diameter approximating the inner diameter of the flush valve passage adjacent the diaphragm seat. The refill ring has a plurality of recesses formed about its periphery whereby closure of the diaphragm assembly upon its flush valve seat moves the refill ring within the flush valve passage, the exterior of the refill ring being in contact with the interior of the passage such that the flow of water past the refill ring is limited to the area of the refill ring peripheral recesses.

Abstract: A flush valve operating means having a housing with a sleeve assembly therein and a piston actuating means within the sleeve, the housing having two fluid inlets and the sleeve having a by-pass means for diverting fluid from one side of the piston to the other to provide equal fluid pressure over the face of the piston and the piston being slidable within the sleeve in response to fluid supply line pressure being applied to one face of the piston to actuate the flush valve.

Abstract: A flush valve handle assembly includes a collar adapted to be attached to a flush valve body. There is an opening in the collar and a flush valve handle extends through the opening. A piston is movable within the collar and in contact with that portion of the flush valve handle extending through the opening. An operating rod is attached to and movable with the piston and is integral with a flexible diaphragm which is in sealing contact with the flush valve body. A spring member is attached to the pisotn and is effective to urge the operating rod and piston to a normally unoperated position.

Abstract: This invention relates to a flexible diaphragm assembly for use in a flush valve having a hollow body, an inlet, an outlet, a valve seat formed in the body between the inlet and outlet, and an operating handle assembly. The diaphragm assembly includes a diaphragm adapted to be peripherally attached to the flush valve body and a barrel integral with the diaphragm. The barrel has a seat member on its exterior positioned for sealing engagement with the body valve seat. There is an annular valve seat on the interior of the barrel and a relief valve is positioned within the barrel and has a seat portion positioned to close upon the barrel valve seat. The relief valve has an annular flexible lip in contact with the interior of the barrel and spaced from the relief valve seat portion. The relief valve further has a stem extending outwardly from the barrel and positioned for contact by the flush valve handle assembly.

Abstract: A flushometer valve integrable with a structure to which it is mounted.

Abstract: A diaphragm for a flush valve is made of molded rubber with a plastic insert for strengthening the diaphragm. The insert includes reinforcing means located at the points where the diaphragm is attached to the valve parts. There is also a plurality of spaced, rigid sections placed between the points of attachment. Connecting means are provided for connecting the reinforcing means and the rigid sections together. The connecting means is arranged to permit flexibility of the diaphragm in two planes. Thus, the diaphragm is permitted to flex both in the plane of the diaphragm and perpendicular to the diaphragm.

Abstract: This shower head is designed to allow hot and cold water to shut off completely, when persons are soaping themselves, or when not in use, and it consists primarily of a main body, in which water flows into a channel, and proceeds into a minimum metering channel, that is designed to allow the minimum flow needed to operate the device. It further includes a plunger, which is compressed by water pressure in an upper chamber, so as to move it down to the closed position, and a manually operated release mechanism will tilt a valve, which will release the water pressure in the upper chamber, and cause it to flow out of the sprayer plate of the device.

Abstract: A flush valve for releasing a predetermined volume of liquid upon actuation thereof includes a valve housing having an inlet, an outlet, a valve seating surface circumventing the inlet and a piston housing portion adjacent to the outlet. The piston is movable between an opened and a closed position and has one end sealable with the valve seating surface when the piston is in the closed position to block the flow of liquid from the inlet to the outlet. Upon actuation of the valve, the piston is unsealed from the seating surface to permit liquid to flow from the inlet to the outlet. The other end of the piston is sealed to the piston housing portion and a control chamber is provided having an expanding portion between the piston and the piston housing portion. Restricted flow of liquid from the control chamber to the outlet is permitted.

Abstract: A small orifice in a flush valve piston is provided with a filter means to prevent sedimentary deposits from clogging the orifice. The filter is formed by providing a generally three-sided channel around the piston. The channel is located such that the orifice opens into the base of the channel. A resilient sealing ring is seated on the channel to close the open side of the channel. A plurality of grooves extend from the interior of the channel, under the sealing ring and to the exterior of the piston. These grooves are sized to prevent entry of sedimentary deposits into the channel while permitting entry of water in the channel. The grooves are individually small compared to the orifice opening but they are sufficient in number to provide an adequate supply of water to the orifice.

Abstract: A flush valve having a diaphragm type main valve and a relief valve located between the main valve and a cover member and a ring shaped water control device located between the relief valve and the cover member to shorten the flush cycle and greatly reduce the total volume of water flow through the main valve during flushing.

Abstract: A flush valve of the tilting pilot valve type in which stops are provided for the manually or pedal-actuated handle so as to provide a low volume or a normal volume as desired. In one form an attachment having a low volume stop is provided on the conventional handle housing. In another form the conventional housing is replaced by a modified housing provided with the low volume stop. In still another form an attachment in the form of a clamp is provided on the handle to provide the low volume.