Abstract: The apparatus described herein is for use in a valve including a hollow valve body having inlet and outlet passageways extending into the body and a valve member positioned in the body for movement between open and closed positions. A plurality of orifice members are disposed between the inlet and outlet so that fluid flowing through the valve must pass therethrough. The orifice members are arranged to restrict fluid flow and thus reduce the pressure as the fluid flows through the valve. The orifice members are also arranged so that the inlet to each series of members is through an annular space that is narrower than the smallest of the orifices so that any particle passing through the annular space will pass through the valve. Each inlet is provided with a cleaning member that projects therein and the orifice members are rotatable in the valve body so that the cleaning members pass through each inlet.

Abstract: A valve installed in a sewer pipe or drain pipe extending from a house or other building to a street sewer pipe or the like which will automatically close when sewage backs up from the street sewer pipe toward the house or building structure thereby preventing back flow from the sewer pipe into the house thereby protecting the basement or other lower portions of the house or building structure from becoming flooded due to sewer backup. The valve is motor actuated and includes a vertically reciprocal gate controlled by a float operated switch structure disposed downstream of the valve to quickly and positively move the valve to fully closed position upon flood conditions existing in the lateral sewer pipe downstream of the valve thereby preventing back flow and flood conditions occurring on the house side or upstream of the valve.

Abstract: A metal seat assembly (40) for sealing against the sealing surface of a valve member movable between open and closed positions. The seat assembly comprises an outer metallic ring (44) having an inwardly extending metal seal lip (58) hinged to the main body (48) of the ring by a reduced thickness portion. An intermediate metal backing ring (45) has a plurality of spaced fingers engaging the hinged metal lip to urge continuously the lip (58) into tight sealing contact with the valve member, and the backing ring may be adjusted to control the force exerted by the fingers against the metal lip. An innermost metal wiper ring (46) adjacent the flexible metal lip is urged continuously into contact with the sealing surface of the valve member to minimize contact of foreign matter with the sealing lip.

Abstract: A valve stem lubricating device. The lubricating device is designed for employment for use with valve stem valves that are difficultly accessible as in the interior of the valve yoke where the stem ends are protected and access is not available to the interior portion of the valve. The device is comprised of two hinged half sections or circular portions provided with lubricating material such that when the hinged sections are closed around the valve stem the lubricating material contacts the valve stem. The half sections are provided with an arcuate cut-out portion adapted to contact opposed vertical rod-like members of the valve yoke so that the cut-out portion can fit therearound. A friction fit can be made whereby the cut-out portion fits snuggly around the opposite support members forming the valve yoke. In a modification the lubricating device is provided with a super structure comprising two hinged half members which support inwardly extending wire bristles.

Abstract: A peritoneo-venous shunt for the surgical management of ascites includes a perforated inlet catheter with an asymetrical, one-way valve attached to and contained within a pump body, a venous catheter and a plurality of x-ray absorbing markers placed along the catheters for ascertaining their positioning in a patient.

Abstract: A seating element is positioned in a flow cutoff device. The seating element includes a central opening for conducting fluid flow. The flow cutoff device includes an apertured sealing member which slides across a seating portion of the seating element between open and closed positions. The seating portion includes a rim surrounding the central opening and a transverse surface surrounding the rim. The rim projects axially beyond the junction of the rim and surface. The seating element is mounted under compression so that the transverse surface flexes against the sealing member and functions to scrape away particulate matter when the sealing member is opened and closed, and to prevent twisting of the rim.

Abstract: A dump valve apparatus is described which may be used to drain a chemical reactor tank. The valve includes a valve seat ring having a substantially vertical inner seat surface defining a discharge passage, a valve plug having a substantially vertical outer side surface which fits in the seat ring and a seal formed between such vertical sealing surfaces. The valve inlet and outlet openings are aligned with the vertical discharge passage through the seat ring and the sealing surfaces are vertical to minimize the amount of material deposited thereon. The outer plug side surface slides across the inner seat surface during opening and closing of the valve so that such surfaces wipe each other to remove deposited material and provide a self-cleaning valve. The inner seat surface is provided with a plurality of annular grooves containing elastic sealing members which engage the outer plug side surface to form a liquid tight seal which is resistant to the pressure created by the liquid within the tank.

Abstract: A novel gate for use in a gate valve is provided with a cylindrical port which extends from the gate's upstream face to a downstream face. Sand grooves are provided on each face and passages extending in a radial direction from the port's cylindrical wall to the grooves are also provided. The passages are thus aligned with their longitudinal axes being generally perpendicular to the direction of fluid flow which enhances flushing of particles such as sand or scale from the grooves. A novel shell core and core box for making same are also disclosed.

Abstract: A parenteral liquid administering device includes an enlarged, liquid-holding burette-type chamber for receiving measured aliquots of liquid from a source. The burette has a bottom flow aperture with a valve controlling flow through the aperture. The valve includes a buoyant float ball and a valve seat positioned about the bottom flow aperture to receive the ball, in the absence of sufficient liquid to float it, in air-tight, sealing relation. Apertured retention means are provided surrounding the ball which are proportioned to permit it to float in spaced relation from the valve seat in the presence of liquid passing through the apertured retention means.

Abstract: Switching valves, e.g. for a closed-type molding apparatus for manufacturing polyurethane elastomers and the like, comprising a valve body having a plurality of openings, preferably five, serving as inlet and outlet ports, and a preferably rotatable valve sleeve which serves for switching the openings without any danger of introducing any other material into the switching valve system. Connections are made between pairs of adjacent openings, one of them being cut off from communication.

Abstract: A valve assembly for closing and sealing an inlet which is full of large granular dry material including a dome-like valve member mounted for rotation to open or close the inlet and a deformable resilient sealing ring which may be inflated by gas pressure to engage the valve member in its closed position to produce a gas-tight seal across the valve member, the sealing ring being arranged within the valve assembly to minimize abrasive wear on the ring from the granular material.

Abstract: A shear ram assembly for a blowout preventer having a pair of rams with opposed shear blades, means for moving the shear blades across the pipe opening of the blowout preventer, one of the rams having a shoulder spaced from the shearing plane of the blades, a face seal mounted in a recess in the ram having the shoulder and positioned so that the blade on the other ram bends the cut pipe around the shoulder and then seals against said face seal, and means for preventing metal parts from collecting in front of said face seal.

Abstract: A shear ram assembly for a blowout preventer having a pair of rams with opposed shear blades, means for moving the shear blades across the pipe opening of a blowout preventer, a face seal on one of said rams and a shoulder above said face seal, the forward face of the shear blade of the other ram coacting with the shoulder to move a cut pipe section out of its path and also being shaped to enter into sealing engagement with the face seal, and a debris drain through the blade of said one ram to allow debris to move out of the path of the sealing face of the shear blade of the other ram toward the face seal.

Abstract: A safety device for coupling one end of a main conduit of a first piping element coaxially to one end of a second piping element. The first piping element has a branch conduit adjacent to the one end of the main conduit, and the device includes an obdurating member inside the main conduit of the first piping element, an operating mechanism connected to the obdurating member and extending from the other end of the main conduit for moving the obdurating member between a first position and a second position to selectively open and close the passage between the one end of the main conduit and the branch conduit, clamping apparatus mounted on the second piping element for clamping the two elements together, and an actuator mounted externally on the second piping element for engagement with the operating mechanism when the two elements are coupled together to move the mechanism between the first and second positions.

Abstract: A thermal element having a cylinder member carrying a piston member that projects out of an opening of an end of the cylinder member to be extended and retracted relative thereto upon changes of sensed temperature. A washer-like resilient seal member is carried by the end of the cylinder member and has an opening therethrough that press-fittingly receives the piston member therethrough in such a manner that an inner peripheral portion of the washer-like seal member is turned into substantially parallel sealing and wiping engagement with the stem while being substantially transverse to the remainder of the washer-like seal member, the washer-like seal member containing abrasive material therein to provide a scraping action of the inner peripheral portion thereof against the piston member to clean the same as the piston member is moved relative thereto.

Abstract: A sampling system for obtaining composite samples of flow streams is provided. The system includes a rotatable sampling valve which periodically removes a fixed sample volume from the stream for storage in a sample container.

Abstract: A reciprocating valve is formed with a valve stem extending through a packing box which includes an outwardly facing conical surface disposed about the valve stem. The conical surface terminates in a knife-like edge which functions to remove accumulations of foreign material from exposed portions of the valve stem. As the stem moves into the packing box, a non-metallic liner is disposed between the packing box and the valve stem for positioning the knife-like edge in close proximity to and concentric with the valve stem.

Abstract: A fluid valve particularly suited for controlling the flow of coolant in an automobile heater system and a vacuum responsive servo for actuating the valve. The valve, two embodiments of which are disclosed, has improved sealing means and the servo includes improved sealing of the diaphragm with respect to the servo actuating element and an improved two-piece servo housing. A novel connection between the servo and the valve is also provided, having reduced backlash and less tendency to bind.

Abstract: A valve comprising: a housing having an opening therethrough around which is provided a seat; a closure assembly for blocking flow through the opening and for sealing engagement with the seat; and an actuator assembly connected to the closure assembly for moving the closure assembly between a first position, out of the flow path of the opening, to a second position, in the flow path, and for expanding the closure assembly for sealing engagement with the seat.

Abstract: In one exemplar embodiment, an improved ball valve is provided in which a movable seating ring is concentrically carried by the inner diameter of a spring washer concentrically disposed in the inlet port of the ball valve housing. The spring washer is retained in place about its outer diameter portion by means of a retaining ring removably inserted in the inlet port of the valve body. The spring washer is sealed to the valve body by means of a conventional circular seal disposed between the face of the spring washer and the valve body. When the valve is closed, the differential pressure developed across the ball acts on the outer surface of the spring washer and transmits additional sealing force to the seating ring in contact with the ball for increased sealing.

Abstract: A gate valve particularly for controlling the flow of chemicals and corrosives includes a knife edge gate and means to assure parallelism between the gate and a stainless steel gate seat in the valve casing. A bonnet on the top of the casing has guides for the gate and allows full withdrawal of the gate from the flow line without the necessity for the gate passing through the gate stem packing. Leakage of the valve is substantially eliminated.

Abstract: A shaft seal for a check valve having a shaft rotatably disposed within a valve housing. The shaft seal is disposed within a recess defined within the interior of the valve housing between a bushing member and the shaft. Disposition of the seal within the recess permits accumulation of foreign matter precipitate to occur without deleterious clogging of the clearances between the shaft and the bushing, thus permitting free rotational movement of the shaft. A plurality of sharp-edged grooves disposed on the surface of the shaft provide a flow path for guiding the foreign matter precipitate into the recess. A flushing fluid opening is provided within the valve housing to permit introduction of a flushing fluid into the body recess.

Abstract: The solenoid plunger normally closes the center vent hole in the diaphragm so inlet pressure is applied through the bleed hole to the space above the diaphragm resulting in enough pressure to close the diaphragm on the valve seat. When the solenoid is actuated, the plunger is lifted, allowing water to flow through the vent faster than it can flow through the bleed hole. This lowers the pressure above the diaphragm so inlet pressure can move the diaphragm from the seat and full flow can take place. The bleed hole is quite small. To prevent entrained particles from reaching and plugging the bleed hole, an arcuate groove having a width less than the bleed hole diameter is molded into the diaphragm to trap particles in the groove and prevent the particles from reaching and closing the bleed hole.