Abstract: A vacuum pulsator valve for milking machines is disclosed comprising a pair of valves controlling the alternate application of vacuum and air pressure in a line connected to the pulsator the pulsator including adjustable bleed valves operative to control the frequency of alternation and/or the phase length of alternation of vacuum and air pressure. The pulsator may be subject to compressed air or atmospheric air, and the bleed valves are adjustable externally of the pulsator body.

Abstract: Disclosed is a control valve for flow of solids or fluids which controls flow over a full range and provides a full opening for solids dumping. The control valve includes an orifice plate, a pair of slides disposed adjacent to and downstream of the orifice plate which are relatively moveable toward and away from one another to closed and open positions, and a flow control port in one of the slides which is closed when the slides are in the closed position and which is progressively opened as the slides are moved away from one another. An exit liner is provided downstream of the slides which centers flow after passage through the control port protecting the downstream side of the valve body from serious erosion. Guides for the slides are spaced apart at the center of the flow passage in the valve so that any buildup of solids are cleared on closing the slides. The wear prone parts of the valve are removable from the valve for repair or replacement without removing the valve from the line.

Abstract: A novel flow divider-combiner valve unit is disclosed. A valve body includes fluid passageway means for controlling fluid flow through the divider-combiner valve unit. The fluid passageway means comprises: a cavity, first, second and third passageways; first and second pressure-responsive elements; and biasing elements for retaining the pressure-responsive elements substantially in open positions until a predetermined substantial pressure differential exists in the divider-combiner valve unit. The biasing elements also enable the pressure-responsive elements to move substantially independently of each other toward closed positions when a first pressure differential in the divider-combiner valve unit exceeds the predetermined pressure differential. The biasing elements additionally cause the pressure-responsive elements to move substantially in unison when a second pressure differential in the divider-combiner valve unit exceeds the predetermined pressure differential.

Abstract: A structural kit for the installation of a flow regulator valve in pipeline without interruption of the fluid flow in the pipeline. To make precise cutting of the desired portion of the pipeline in simple cutting operation and to just fit the valve into the cut-away portion thereof, a plane of the ring-shaped gear having cutting tools is tilted against a plane perpendicular to the axis of the pipe so as to cut away the pipe section the upper portion of which is longer than that of the bottom portion thereof.

Abstract: A valve comprising a valve body, a butterfly valve element pivotally mounted within the body and a guard closely adjacent the upstream edge of the valve element in the open position. The guard protects the upstream edge of the valve element from the fluid stream passing through the valve. The guard may also be used for injecting a purging material or a sealant onto the edge of the valve element, for carrying a seal and for providing an impedance to the fluid stream to reduce the fluid forces acting on the stream which tend to move the valve element toward the closed position. The guard is carried by a removable guard mounting ring.

Abstract: A shut-off valve, particularly for use in a pipeline for conveying gases, includes a valve casing, a valve member mounted for movement between a valve open position and a valve closed position, and a casing seal mounted on at least one of the valve casing and the valve member for forming a seal with a sealing surface at least when the valve member is in the valve closed position. The casing seal includes a frame member having two legs extending in a direction toward the position of the sealing surface when the seal is formed. The two legs are spaced and define therebetween an open channel. The casing seal further includes a seal member formed from a substantially flat elastic strip which is deformed to include two leg portions which are positioned between and freely and elastically urged toward respective inner surfaces of the legs of the frame member and a bent portion which connects the two leg portions and which projects outwardly of the channel for sealing contact with the sealing surface.

Abstract: A rotatable unitary ball valve is provided, comprising, in combination:(1) a unitary valve housing of plastic material defining a ball valve chamber, intercommunicating first and second fluid ports and first and second fluid passages, and a threaded end connector socket in one passage;(2) an externally threaded end connector integral with the valve housing, permanently fixed in the end connector socket, and adapted for attachment to a fluid line; and the other fluid passage being adapted for attachment to a fluid line;(3) a ball valve having a through fluid passage intercommunicating the first and second fluid passages of the valve housing only in the open position of the valve, and disposed in the valve chamber for rotation between open and closed positions; closing off intercommunication between the first and second fluid passages via the ball valve chamber and the ball valve through fluid passage in the closed position, and making such intercommunication in the open position;(4) at least one sealing means

Abstract: A rotary ball valve assembly including an elongate valve body, a first passage having a transverse pin and an elongate key of a rotatable actuator extending therein, a lower valve seat, and a ball member resting on the lower valve seat. A pair of slots are formed on the exterior of the ball member normal to the longitudinal axis of the passage extending therethrough, which slidably engage the pin and key when the ball member rests on the lower valve seat. By rotating the ball member one quarter turn by the key of the actuator the ball member is moved downwardly to compress the elastomeric ring which partially defines the lower seat. An upper ring shaped valve seat is disposed on the first passage above the ball member. The upper surface of the valve seat is in abutting contact with a segmented ring that has an upwardly and inwardly tapered external side surface and an internal side surface that tapers upwardly and outwardly.

Abstract: A diverter valve assembly includes a valve body rotatably mounted in a cavity of a housing. The housing has an inlet connected to a water supply, a tub spout outlet, and a showerhead outlet. The showerhead outlet is connected to a showerhead via a riser. The valve body has a jet orifice in communication with the inlet and alignable with one of the outlets. The valve body also has a flange which rotatably seats an elastomeric sleeve. The sleeve, when the jet orifice is aligned with an outlet, is aligned with the other outlet. The sleeve and flange form a pressure chamber which is in communication with the inlet. When the sleeve is aligned over the tub spout outlet, and the water supply is turned on, the back pressure caused by the showerhead flexes the sleeve to seal the tub spout orifice. When the water supply is turned off, the elastomeric sleeve relaxes to allow water to drain from the riser to the tub spout without the valve assembly changing position.

Abstract: A volume flow or pressure regulating device is described which is especially suitable for air conditioning or air heating systems. The device transmits a torque moment function onto the flap control shaft in response to the flap angle. The device includes primarily a shaft (2) which is rotatably supported and extends through a conduit (3) in which the flap is mounted on the shaft which cooperates with a curved cam disk (10). One end of a tension cable (9) is secured to a circumferential point of the cam disk and the other end of the tension cable (9) is secured to the free end of a bending spring 6, the opposite end of which is secured to a fixed point. An adjustable tensioning member (7) defines, in accordance with its position relative to the length of the bending spring (6) the effective or bendable length of the bending spring (6).

Abstract: A flow control valve assembly is provided for timing and regulating fluid flow from a valve inlet to primary and secondary fluid flow outlets. The valve assembly comprises a regulator valve which, upon initiation of fluid flow to the valve assembly, is spring-biased to open the primary and secondary outlets and to modulate the primary outlet flow in a manner maintaining the secondary outlet flow at a predetermined minimum fluid pressure. Upon elapse of a predetermined time interval, a timer assembly responsive to the secondary outlet flow triggers an alteration in the spring bias acting on the regulator valve to permit fluid pressure at the valve inlet to shift the regulator valve to a position closing the secondary outlet and fully opening the primary outlet for the remaining time of a fluid flow cycle. When fluid flow through the valve assembly is halted, a return spring resets the regulator valve to its initial state.

Abstract: This invention relates to the dished discs employed in the construction of the free-disc or floating disc butterfly valves wherein the disc pivotably disposed in the valve body to block the fluid passage is shaped like a dish. The valve stem is mechanically connected to the convex side of the dished disc substantially near the center. The central axis of the valve stem substantially passes through the center of a hypothetical sphere that substantially includes the rim surface of said dished disc and the surface of the seat disposed in the valve body.

Abstract: A system for controlling flow of fluid along a conduit from a source of fluid under pressure to a consumer device comprises a primary throttle for connection in the conduit and controllable between a first condition in which it is at least partially closed and a second condition in which it is more fully open, and a secondary throttle defining at least one orifice for connection in the conduit and including a member which is displaceable to vary the area of the orifice. A first force dependent upon the pressure drop across the secondary throttle and a second force dependent upon the time integral of the pressure drop across the primary throttle are applied to the member, the first and second forces being oppositely directed, whereby the member is displaced towards a position in which the pressure drop across the secondary throttle bears a predetermined relationship to the time integral of the pressure drop across the secondary throttle.

Abstract: A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing surface. The plug is mounted to a valve shaft supported in the body for rotation about an axis transverse to, but offset from, the centerline of the port. The seat ring, body and a retainer ring include among them a pair of annular channels for retaining a pair of seals adapted for improving their sealing action with pressure.

Abstract: A blocking-type valve for isolating or closing a fluid path comprises a housing body forming a throughgoing fluid passage and, at an intermediate location along this passage, a valve seat inclined to the general direction in which the passage extends. A valve-closure member is axially shiftable into engagement with the seat and is provided on a sliding rod. The valve body also contains a tubular member or sleeve concentric with the end of the rod carrying the valve-closure member and of a length and cross section such that, in the open position of the valve, the interior of this sleeve is sealed off by the closure member.

Abstract: Butterfly valve comprising a valve housing and a flap and two soft sealing rings retained by undercut grooves in the valve housing and from said grooves radially inwardly projecting sealing lips for engagement with the sealing surface of the flap. By means of the two soft sealing rings which are separated by a flexible intermediate ring (18) of metal, the radial inner edge thereof is formed with two opposite directed sealing lips, a complete fluid sealing in both pressure directions is obtained. In the event of destruction of the soft sealing rings caused by eventual fire in the valve, the pressure of the fluid will result in deformation or flexing of the intermediate ring, so that the one or the other of the sealing lips is pressed against the sealing surface of the flap and, thereby obtaining a fire proof seal in both directions.

Abstract: There is disclosed a novel sealing member and arrangement for a valve of the type including a valve body having a fluid passage therethrough and a flow control member movably supported relative to the body for opening and closing the flow passage, such as found in a ball or butterfly type of valve constructions. The valve body and flow control member include, respectively, an annular sealing surface and an annular sealing member support groove or channel confronting the sealing surface and having an annular sealing member disposed therein. The sealing member includes an anchoring portion held between opposed sidewalls of the support groove, and a convoluted portion extending radially inwardly of the anchoring portion, with a sealing portion carried thereby, and designed to extend beyond the groove, for engagement with the sealing surface. The groove sidewalls are of slightly greater axial width than the sealing member to permit limited elastic axial deflection.

Abstract: A vacuum pulsator for milking machines comprises a pair of valves controlling the alternate application of vacuum and air pressure in a line connected to the pulsator, the pulsator including adjustable bleed valves operative to control the frequency of alternation and/or the phase length of alternation of vacuum and air pressure. The pulsator may be subject to compressed air or atmospheric air, and the bleed valves are adjustable externally of the pulsator body.

Abstract: An air valve is disclosed having a valve plate with a snap-in lever-bearing at one end and a similar lever-bearing at the opposite end or optionally a snap-in bearing without a lever at the latter end.

Abstract: A fabricated ball valve is positioned between the inlet and the outlet of a valve housing and includes a first tubular member having sealing faces on each end for seating on valve seats and providing flow therethrough when the first tubular member is aligned between the inlet and the outlet. Second and third tubular axially aligned members have one end connected to the outside of the first member and have sealing faces on their other ends for seating on the valve seats. The second and third members block flow through the valve when the second and third members are aligned between the inlet and outlet. Sealing means may be on either the valve seats or on the movable seat ring connected to each of the other ends of the second and third tubular members.