Abstract: A shut-off valve for high temperature erosive flow is disclosed having a valve and a valve engaging or seating portion in which substantial erosion of an area beginning at its initial erosion point adjacent the valve seat does not erode the valve seating portion of the valve seat and the valve seating portion of the valve member to prevent closing of the valve or to cause leaks. The valve has limited but enough universal movement to be self-seating to accommodate thermal growth. The valve and valve seat can be removed from the valve without taking the valve off the line. A number of embodiments are disclosed.

Abstract: Fluid is metered into a conduit by a device which includes a detector for detecting the flow rate in the conduit, an amplifier for producing a pneumatic pressure which is dependent on the flow rate sensed by the detector, a control unit having a control shaft connected to a control diaphragm which is subjected to the pneumatic pressure from the amplifier, a motor unit having a hydraulically-pulsated motor/diaphragm connected to a motor shaft which is aligned with and contacted by the control shaft, and a pumping unit having a pump diaphragm connected to the motor shaft to meter fluid into the conduit.

Abstract: A magnetic detent housed in an end cap adapted for mounting to a hydaulic control valve having a reciprocally actuated spool movable from a neutral to a detented position. The magnetic detent including a spool extension formed with a detent groove and slidably supported in a retainer mounting a plurality of radially movable balls. A centering spring exerting a biasing force for urging the extension to the neutral position. A clapper movably mounted on and in driving contact with the balls and spaced from a magnet member generating a magnetic force. A spring member exerting a relatively light pre-load force for urging the balls against the periphery of the extension and driving the clapper into magnetically held contact with the magnet member. The pre-load and magnetic forces combining to form a detenting force locking the balls against the biasing force of the centering spring. The biasing and pre-load forces combining to form a shifting force resisting movement of the extension from the neutral position.

Abstract: A cock for controlling the heating system of a motor vehicle has a flat valve member controlled by a lever. Under operating conditions said valve member is permanently biased by the pressure of the heating liquid against a sealing ring provided in the seat of the valve member in the cock housing and the control lever is connected to the pin of said valve member by means of a screw, the screw serving as a secondary means for biasing the valve member.

Abstract: An improvement in a flow control device for permitting fine adjustment of flow rates of fluid in tubing and maintaining established rates of flow. The device includes a clamping member pivotally mounted adjacent a clamping surface and a tubing-engaging surface on the clamping member which progressively closes the orifice of tubing as the clamping member is rotated in one direction. Coacting means on the clamping member cooperate with actuating means on a force-inducing member mounted for rotational movement on the body of the device. The coacting means is located at a point from the point of pivotal attachment of the clamping member which is at least twice the distance from the pivotal attachment to the tubing-engaging surface. Thus a large movement at the coacting point translates into a small movement of the tubing-engaging surface and results in fine adjustment of flow rates.

Abstract: Apparatus and method for producing a slurry. The apparatus includes a slurry reservoir, a closed circuit and a pump for circulating slurry from the reservoir through the closed circuit and back to the reservoir. Means are provided for introducing both particulate and liquid materials into the closed circuit for forming the slurry. A first control circuit provides a particulate flow rate signal indicating the rate of flow of particulate material into the closed circuit. A flow meter provides a liquid flow rate signal indicative of the actual flow rate of liquid material into the closed circuit. A density measuring and control circuit measures the density of slurry flowing within the closed circuit and provides a density signal indicative of the difference between the measured density of slurry and a desired desity based upon data inputted to the density measuring and control circuit.

Abstract: A positive opening device for pinch type valves having an elastomeric body consisting of a generally cylindrical sleeve portion forming a material flow passage, with flange portions at the ends for attachment into material flow lines. Under low pressure conditions of operation, or where the sleeve portion has taken a set, being deformed or in partially closed position, it is desireable to improve the function of restoring the sleeve to a full open condition, whether of a full round type or of a pre-pinched type. The sleeve consists of an elastomeric inner layer surrounded by multiple plies of fabric reinforcement, embedded in elastomeric material in the valve body finalized form, and the fabric reinforcement extends through the sleeve and into the flanged ends. End reinforcements extending partially through the sleeve and up into the flanges are added to the body structure.

Abstract: A self-locking butterfly valve adapted for placement in a tubular housing including a longitudinally slotted shaft with opposing grooves and a disc slideably received by the shaft. The disc is provided at one end with a slot engaging the grooves of the shaft and at the other end with a tab which, with the shaft, extends through an aperture in the housing for locking the disc to the shaft without use of external fasteners. A pin through the shaft may be used to prevent withdrawal of the shaft from the tubular housing.

Abstract: A blowout preventer having a body with a bore and opposing guideways intersecting the bore, a ram in each of the guideways, a cap closing the outer end of each of the guideways, an operating stem connecting to each of said rams, extending through its cap in threaded engagement and having means for engagement by a handle, such as flats on its outer end, a pair of hydraulic motors each having a housing and a rotating shaft, means for securing said motor housings to the body surrounding said guideways, means for connecting said drive shafts with the operating stems to rotate said stems, and means supplying hydraulic fluid to said motors for selective rotation of said shafts and said stems in preselected directions.

Abstract: A device for balancing the pressures of two different feeds of fluid is disclosed, consisting of a housing and two longitudinally extending casing portions on each side of the housing and communicating therewith. The housing contains a longitudinally displaceable flexible but non-elastic diaphragm. An actuating rod is rigidly secured to the diaphragm and extends into both casing portions. Each of the latter contains a slide valve secured to the outer ends of the actuating rod. Each slide valve is a hollow rigid tube having a slit in its surface. Each casing portion is provided with an outlet opening and an inlet opening. The fluids enter the inlet openings, flow through the slits in the slide valves and act on the diaphragm through the casing portions before flowing out through the outlet openings at balanced pressures.

Abstract: In a device for dosing a liquid effective substance into flowing water, a housing forms a flow path for the water and contains a drive mechanism arranged to be driven by the water. A disposable tank unit is mounted on the housing and includes a dosing pump and an injection valve. The dosing pump is driven by the drive mechanism and withdraws the liquid effective substance from the tank and directs it into the injection valve for introduction into the water flowing through the housing.

Abstract: An unloader/check valve for use with an air compressor comprising a one-piece valve body, a valve member slidable in the body between open and closed positions, biased toward its closed position, the valve having a bleed for unloading the compressor when the valve member is in its closed position, and a dashpot arrangement for damping pulsations of the valve member.

Abstract: A double acting pinch valve with floating pinch mechanism. Two opposed rectilinear rigid members extend transversely to a flexible deformable resilient sleeve and on opposite sides of the sleeve; the flow of fluid to be controlled is through the sleeve from one end to the other. A floating piston is provided in a container, i.e. in a cylinder, which container or cylinder also has a floating mounting and suspension. The piston rod is rigidly connected to one of the rigid members, and the floating container is rigidly connected to the other rigid member. The two rigid members and the container with integral piston all have, as a feature of the invention, a floating mounting and suspension on a frame on which the sleeve is mounted, so that these elements are freely displaceable relative to the frame and towards or away from the sleeve.

Abstract: This invention concerns a multi-liquid flow proportioning device comprising a vessel adapted to contain a first liquid, a container within said vessel adapted to hold a second liquid separate from said first liquid, separate inlet and outlet means respectively for the portion of said vessel adapted to contain said first liquid and for said container, said container including a wall portion adapted to move in use in resopnse to changes in pressure of its liquid contents, and means operable by the movement of said wall portion to control the liquid flow into the inlet of said container whereby tending to maintain the volumetric contents thereof generally constant. The invention has particular application to combining water and fire retardant.

Abstract: This invention relates to a valve wherein the valve disc is actively pressured onto the valve seat for a positive closure by means of a compressive force exerted on the stem which is linked to the center of the valve disc at a slanted angle. A tensile force applied to the stem disengages the valve disc from the valve seat that facilitates the opening and closing action of the valve.

Abstract: A pilot operated pressure relief valve unit has a main valve having a main piston movable between two control spaces interconnected by a passage provided with a nozzle; one of the control spaces is constituted by two separate control chambers delimited by corresponding areas of the main piston whereby one of the chambers is directly connected to the pilot valve and the other control chamber is connected to the pilot valve via a nozzle.

Abstract: A flow control device for regulating the flow of fluid through a flexible tubing wherein a roller is employed with a grooved surface for incrementally controlling the flow of fluid through the tubing. In order to properly orientate the groove of the roller during its path of travel through the clamp body and over the tubing, a flat segment or interrupted surface portion is provided on the roller and an interfering member is provided in the base of the clamp. In addition, and to improve the efficiency of the clamp, additional features such as a relief surface in the roller, centering lugs for the tubing to position it in the clamp body, as well as circumferential ribs on the roller are provided.

Abstract: A valve structure for use in a two handle faucet environment includes a sleeve and a valve member positioned within the sleeve and rotatable therein. The sleeve has an inlet and an outlet and a path of flow therebetween. The valve member has an opening which is used to connect the inlet and outlet and thus form a part of the path of flow. An annular seal member is fixed on the valve member and spaced from the opening, which seal member is used to close off communication between the inlet and outlet. At no time is the path of flow through the seal member, thus preventing any excessive pressures being applied to the seal.

Abstract: A ball valve having a cylinder slidable in a port. The cylinder has a lip which is pressed, by a spring, against a spherical surface surrounding a passage through the ball. A sleeve is slidable to a position over the cylinder, the sleeve having an annular groove adjacent the lip and a first seal therein. The sleeve has a portion contiguous to the cylinder at the end thereof opposite the lip, a second seal being provided between the housing and the sleeve portion. If C is the inside diameter of the lip, if B is the outside diameter of the length of the cylinder having the groove, if A is the outside diameter of the sleeve portion, if A>C, and if C>B, the valve will seal for flow in either direction or for zero flow all at, say, 3000 psi.

Abstract: A butterfly valve is adapted to pivot a valve stem to a valve body through openings formed in a ring-shaped elastic valve seat attached inside the valve body, to slidably contact the valve member and the inner face of the valve seat each other in the vicinity of the valve stem, and to form recesses for charging lubricant in the slidably contacting face on the valve seat or on the side face of the valve member.