Abstract: A buffer member, for locating adjacent the open end of a sleeve of a spool and sleeve valve. The buffer member comprises a generally cylindrical member formed of a resilient material and having one or more protrusions protruding inwardly of the central aperture. Preferably there are two protrusions arranged diametrically opposed. The buffer and surface may be formed with a projecting generally cruciform portion.

Abstract: A ball type valve for high pressure lines is designed so that the spherical valve member is offset from the centerline of the valve stem in such a manner that the spherical valve member in the open position has a cylindrical fluid passage in parallel alignment with the flow axis of the inlet and outlet passages, but in the closed position is transversely disposed across the valve chamber so that the cylindrical flow passage is perpendicular to the flow axis of the inlet and outlet passages.

Abstract: Linear motion fluid-actuated valves in which all elements are in rolling contact. Two major rollers are prevented from moving apart by a retainer belt, a separator roller depressing the belt between the two major rollers to prevent them from moving towards each other; two inner, opposite sides of the rectangularly cross sectioned valve-body holding the separator roller in position with respect to the retainer belt, the other two sides being in contact with the ends of the assembly of movable elements. Admission of fluid into an end of the valve body causes the assembly to move and thus expose a port in the valve body. Accumulators, pressure relief valves and fluid flow control valves are among the useful applications.

Abstract: A valve for regulating the flow of fluid in a motor vehicle heater system, the valve having a housing with coaxial inlet and outlet ports and a quadrantal closure member pivotally mounted in the housing for movement between open and closed positions, the closure member having an aperture coinciding with the outlet port when the closure member is in the open position and a thin flexible portion covering the outlet port when the valve member is in the closed position.

Abstract: A valve made up of a body and a sleeve telescopically received in the body. A hand wheel is concentrically received on the sleeve and threadably received on the body for moving the sleeve axially of the body. A seal is provided in the body between the body and the sleeve. The seal closes the flow passage between the body and the sleeve when the sleeve is moved to one extreme position and opens the flow passage when the sleeve is moved to another extreme position. The sleeve is noncircular so that it will not rotate relative to the body. The valve is suitable for use on hot water tanks and the like for closing off the flow of water. The body has axially extending hooks that engage the body when the seal is moved to the open position so that the relative movement of the sleeve and body are limited and the sleeve and body will not separate.

Abstract: A valve has an annular seat member coaxially mounted in a groove in the valve body around the outlet passageway. The groove has parallel sides which are perpendicular to its bottom. The seat member has a lesser radial thickness than the groove and is mounted in the groove in an uncompressed condition with substantial clearance between the sides of the seat member and the adjacent sides of the groove. A lip about the outer face of the seat member adjacent its inner periphery normally contacts the adjacent valve member in sealing relation. The portion of the seat member which fits within the groove has an inclined inner annular portion that does not contact the groove bottom and an outer resting surface which contacts the groove bottom. The seat member is formed of a deformable material with the lip being deformed when the seat member is loaded in compression as the valve is assembled.

Abstract: A delay circuit includes a switching element for operatively switching between a first position and a second position. The switching element connects an input voltage to an electrically-operated device in the first position. A delay element is operatively connected to the switching element for maintaining the switching element in the first position when an input voltage interruption occurs which is less than a pre-determined time interval.

Abstract: A valve is reciprocable between open and closed positions along a longitudinal axis and is rotatable about the axis by a rotator mechanism. The rotator mechanism includes first and second parts movable axially and rotatably relative to one another along and about the longitudinal axis. Circumferentially shiftable means is located between the first and second parts for imparting relative rotation between the parts during relative axial movement therebetween. A Belleville spring washer is located between the shiftable parts. The inner periphery of the spring washer bears on one of the parts and the outer periphery of the spring washer bears against the other part. The central portion of the spring washer bears against the shiftable means. The shiftable means is preferably either a ball or garter spring having a curved outer peripheral surface. The spring washer has a depression formed therein to provide a concave surface in contact with the curved outer peripheral surface of the shiftable means.

Abstract: The valve closure element has an annular peripheral groove opening outwardly onto the periphery of the closure element. An annular sealing element has an annular heel portion disposed in the groove. The latter has an inner end face whose diameter is less than the inside diameter of the heel portion. The groove is defined laterally by two confronting annular faces of the closure element which have a substantially rectilinear generatrix and grip the heel portion so as to prevent relative movement of the heel portion and closure element.

Abstract: A mixing valve comprising a rigid structure containing an interior recess and inlet and discharge ports in communication therewith, and weir plates and a slide plate confined in the recess for movement of the weir plates transversely of the recess with respect to the ports and for movement of the slide plate longitudinally of the recess with respect to the ports, said weir plates and slide plate containing openings which in predetermined positions of the plates are aligned in exact registration with the ports, and which can be moved relative to each other and to the ports to vary both the ratio of the fluids to be mixed to each other and the total flow of the fluids through the mixing valve.

Abstract: Valve, wherein a hollow semisphere element serves as the closure or valve element. The semisphere has a circular opening through one of its quadrants, which is aligned with a passage leading to the valve chamber to open the valve, the other quadrant of the semisphere being positioned over the passage to close the valve.

Abstract: The invention relates to machine welded obturators of generally spherical shape for equipping rotary plug valves. These obturators are composed of a central tube and an envelope formed by two hemispherical segments of pressed sheet metal which are truncated by two planes perpendicular to their diametral plane and which are welded on the one hand to one another in a diametral plane passing through the axis of the tube and through the axis of rotation and on the other hand, to two ends of the central tube, and at its outer surface, in a plane parallel to its diametral plane, each segment carries a sealing bearing or a seal in a groove.

Abstract: A ball or spherical plug valve has a pair of annular metallic seal rings mounted in grooves in the valve chamber around the inlet and outlet passageways of the valve body. Each metallic seal ring is of a one-piece generally uniform angled cross-section to form a leg portion and a free lip portion. The free lip portion extends transversely of the longitudinal axis of the passageways and a substantially continuous line contact is provided between an inner annular edge portion of the free lip portion and the valve member. The lip portion is bent from a free position substantially perpendicular to the leg portion to a substantially frusto-conical position when the valve is assembled so the seal ring acts as a spring to urge itself against the ball valve member to maintain sealing contact.

Abstract: A diaphragm assembly for the demand regulator of a breathing apparatus utilizes a diaphragm that gradually flattens down against a conical platform so as to reduce the effective sensing area. Advantageously the diaphragm is used in conjunction with an aspirator opening adjusted for maximum aspiration effect at low flow rates. At increased flow rates the reduced sensing area compensates for increased aspiration, insuring stable operation. The diaphragm periphery cooperates with the conical platform outer edge to serve as the regulator exhaust valve.

Abstract: A valve comprising a body including a plug receiving socket and including conduits in communication with the socket, with the body having an outwardly extending flange about the periphery of the socket, and a plug rotatably positioned in the socket whereby the plug can be rotated to register slots with the conduits to selectively control fluid flow through the conduits, the plug including a flange portion about the flange of the body wherein the flange on the body includes an upper bearing surface and a lower gripping surface, and the flange portion of the plug includes an upper gripping surface corresponding to the lower gripping surface of the flange on the body, whereby insertion of the plug in the socket causes the upper bearing surface to flex outwardly the flange portion of the body and the upper gripping surface constantly urges the lower gripping surface toward a sealing relationship with the plug in the socket.

Abstract: A water faucet is opened by swivelling the faucet pipe to at least one predetermined position and is closed by swivelling to any other position.

Abstract: In a top entry ball valve, a ball having a bore therethrough is provided with chamferred edges around the periphery of the bore at both the inlet and outlet ends. In this manner, due to the geometric configuration of the valve seats, compression sealing takes place only when the valve is closed. When the valve is open, the chamferred edges merely engage the valve seats, thereby allowing easy insertion or removal of the ball/seat assembly.

Abstract: Valve for use with a tubular chemical reactor operating at pressures of over 1000 bar and temperatures of more than 250.degree. C. The actual wall thickness of the lower valve part within the area of the inlet/outlet duct is at least 35% less than the wall thickness of adjacent wall areas, the undersize being compensated by the prestress applied by the tightening bolts of the upper valve part. A lens type seal is located between the lower valve part and the upper valve part and simultaneously (1) seals the connection between the valve parts and (2) comprises the valve seat. The thermal conductivity of the seal is at least 50% lower than that of the valve material.

Abstract: The valve closure member thrust and load compensator is applicable to butterfly valves and the like and is a mechanical arrangement which directly supports the weight of the closure member or disc and simultaneously supports the valve shaft and through means of an adjusting screw balances the load and centralizes the sealing forces within the valve body.

Abstract: A pressure regulator in which inlet pressure from a pressure medium is regulated by movable control means which occupies a position representative of a balanced condition between a predetermined force applied to the control means and representative of the desired pressure, and a counter force applied through the control means to the primary force application means whereupon the control means allows a part or all of the pressure medium to reach the pressure regulator outlet and whereby the remaining portion or none of the inlet pressure is bypassed through a bypass outlet.The desired pressure level at the outlet of the regulator may be altered by varying the force applied to the control means, typically through the use of weights of varying magnitude.