Abstract: The antifriction device for the control shaft of a flow-regulating valve comprises a hollow body and a closure member rotatably mounted within the hollow body. An annular flange is formed on the control shaft at the level of at least one of the packing gland seals and applied against an annular shoulder of the valve body which surrounds the control shaft, a washer formed of material which is capable of creep deformation being interposed between the flange and the shoulder. A peripheral groove is formed in the shaft opposite to the washer and receives the washer material in the event of creep flow.

Abstract: A disc-type valve assembly and method of making same. The assembly includes a valve body having a flowway with a disc-like valve element therein. A shaft has an inner portion directly rigidly connected to the valve element by a pre-stressed self-connection and an outer portion rotatably mounted in the valve body. A handle is directly rigidly connected to the outer portion of the shaft by a pre-stressed self-connection whereby the handle and shaft form a rotating body. A positioning sleeve is interposed in tight pre-stressed relation between the valve body and the rotating body for preventing relative rotation between the bodies under torque loads below a pre-determined magnitude, the positioning sleeve being yieldable under torque loads greater than or equal to that magnitude to permit such rotation.

Abstract: A retaining device to hold a butterfly valve stem (26) in the valve body upon a shearing or breaking of the stem. The retaining device is mounted within a bore (38) in the valve body (12) beneath the stem packing and includes pins (44) extending from the stem (26) which engage in abutting relation a support ring (64) mounted in a groove (56) in the bore to restrain any outward movement of the stem.

Abstract: A rotary spherical plug valve having an annular valve seat, a closure member formed as a portion of sphere, support arms for supporting the closure member with one of the arms being connected to a driving shaft at a hub having a hole for admitting the shaft with a slightly larger diameter than the shaft and a force transmitting means in the form of a cylindrical connection member disposed between a semi-cylindrical groove in the shaft and a semi-cylindrical internal recess in the wall surrounding the hole in the hub.

Abstract: A butterfly valve is provided having a disc with a hub. The disc is adapted to be rotated between an open and a closed position. A valve seat is adapted to engage the disc in the closed position. A shaft has one end affixed to the hub and extends outwardly therefrom to permit torque to be transmitted to the disc from a point external thereof. The end of the shaft affixed to the hub includes a plurality of splines for securing the shaft to the hub. Each of the splines interfers with the hub by a maximum dimension of 0.030 inches. The hub has a stress that is less than 20,000 pounds per square inch. The shaft is joined to the disc by forming the valve disc with a portion of increased thickness (hub) relative to the main portion of the disc. The portion of increased thickness is formed adjacent the circumference of the disc. A hole is then machined into the portion of increased thickness parallel to the disc, with the hole having a diameter slightly smaller than the diameter of the shaft.

Abstract: A fire, smoke and air control damper is disclosed wherein one or more hook-shaped hinge portions formed intermediate between the longitudinal edges of each damper blade engage complementally configured hook-shaped hinge elements formed on opposite sides of the damper frame. A novel notch configuration is made in an inwardly depending flange in the frame on opposite sides, the hinge elements being made from at least a portion of the material notched from the frame. In the closed position, various blade portions engage opposite sides of the inwardly depending flange in the frame to form a seal therebetween, thereby providing a positive pressure resistant seal. The seal is made more complete along the flange in the area of the hinge element because of the novel notch configuration.Several embodiments of actuating the blades to move them between open and closed positions are disclosed. In one such embodiment, a link passes through an arcuate opening in the wall of the frame to engage a linkage rod.

Abstract: An annular valve seat comprises an annular elastic seat member of large width formed in its outer periphery with a circumferential groove having an enlarged bottom and a trapezoidal cross section, and an annular metal core substantially conforming to the groove in cross section and fitting in the groove. The seat is fitted to the inner surface of the case of the valve defining a flow passage. When the valve is installed in a piping system with pipe flanges fitting to the valve case at the opposite ends of its flow passage, the opposed pipe flange surfaces hold the opposite side faces of the valve seat in pressing contact therewith to tightly fit the seat to the case. The disk of the valve has stem holding bores each provided with cutouts extending inward axially thereof and also circumferentially of the disk at the upper end of the bore to permit escape of air from the bore.

Abstract: There is disclosed a butterfly-type valve cooperable with a valve seat element formed of an elastomeric material, wherein this element also forms a seal between two identical housing halves. There is also disclosed an improved method of making such a valve, as well as a vacuum motor for actuating the valve which incorporates a linkage mechanism having force limiting means to prevent the application of excessive forces to this valve.

Abstract: A valve assembly having remotely replaceable bearings is disclosed wherein a valve disc is supported within a flow duct for rotation about a pair of axially aligned bearings, one of which is carried by a spindle received within a diametral bore in the valve disc, and the other of which is carried by a bearing support block releasably mounted on the duct circumferentially of an annular collar on the valve disc coaxial with its diametrical bore. The spindle and bearing support block are adapted for remote removal to facilitate servicing or replacement of the valve disc support bearings.

Abstract: A fluid flow controlling butterfly valve assembly is disclosed which comprises a valve body defining a through passage for fluid, a butterfly valving member supported within the body, a shaft extending transversely through the passage and drivingly connected to the valving member, and a shaft supporting structure rotatably supporting the shaft in the body while sealing against leakage from the valve.In a preferred embodiment the shaft supporting structure includes a band extending about the body and defining recesses aligned with shaft portions emerging from the body. Resilient flexible elements are disposed within the recesses and compressively engage the shaft and body to provide both bearings and seals.

Abstract: A valve comprising a substantially cylindrical housing, a substantially annular cylindrical resilient valve seating member in said housing, said seating member having an inner surface and an outer surface, a butterfly valve having an outer periphery, a shaft extending through the housing and the seating member for mounting the butterfly valve for movement between a first position wherein its outer periphery is in engagement with the inner surface of the seating member and an open position wherein the outer periphery of the butterfly valve is spaced from the inner surface, a plurality of ribs on the outer surface of the valve seating member for bearing against the inner surface of the housing, chambers between the ribs, a plurality of openings in the valve seating member upstream of the butterfly valve for permitting pressurized fluid to enter the chambers to thereby tend to move the resilient valve seating member radially inwardly into engagement with the outer periphery of the butterfly valve when the latter

Abstract: A fluid flow controlling butterfly valve assembly is disclosed which comprises a valve body defining a through passage for fluid, a butterfly valving member supported within the body, a shaft extending transversely through the passage and drivingly connected to the valving member, and a shaft supporting structure rotatably supporting the shaft in the body while sealing against leakage from the valve.In a preferred embodiment the shaft supporting structure includes a band extending about the body and defining recesses aligned with shaft portions emerging from the body. Resilient flexible elements are disposed within the recesses and compressively engage the shaft and body to provide both bearings and seals.

Abstract: A gaseous fuel mixer for an internal combustion engine includes hinged air valve doors arranged for opening in accordance with manifold depression, the doors are linked to the fuel metering means and include means for ducting the gaseous fuel into the air stream. The air valve doors can be hinged flat along a surface of the air inlet to permit alternate use of a conventional gasoline carburetor.

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 valve comprising a substantially cylindrical housing, a substantially annular cylindrical resilient valve seating member in said housing, said seating member having an inner surface and an outer surface, a butterfly valve having an outer periphery, a shaft extending through the housing and the seating member for mounting the butterfly valve for movement between a first position wherein its outer periphery is in engagement with the inner surface of the seating member and an open position wherein the outer periphery of the valve is spaced from the inner surface, an annular chamber between the outer surface of the valve seating member and the housing, a plurality of apertures in the valve seating member upstream of the butterfly valve for permitting pressurized fluid to enter the chamber to thereby tend to move the resilient valve seating member radially inwardly into engagement with the outer periphery of the butterfly valve when the latter is in a closed position.

Abstract: A butterfly valve including a valve disc provided with a diametrically extending through-hole consisting of large diameter portions at its opposite ends and a small diameter portion at its middle, and first and second valve stems mounted in the large diameter portions at the opposite ends of the through-hole of the valve disc so as to be rotatable integrally with the valve disc. The first and second valve stems are integrally connected together by a connecting rod extending through the small diameter portion at the middle of the through-hole of the valve disc.

Abstract: A spherical valve assembly wherein a valve sphere is operatively fitted in position within a fluid passageway through said valve assembly provides an integrally formed stem member having a valve stem and a sustaining stem for said valve sphere, with the integrally formed stem member extending through the valve sphere in supporting engagement therewith. A valve casing is configured to provide a valve stem orifice and a sustaining stem recess wherein the valve stem and the sustaining stem are, respectively, mounted. Valve seat members are located to be urged against the valve sphere which is rotated to open and close the valve. By means of the specific structural orientation of the assembly, particularly the integrally formed stem member including the valve stem and the sustaining stem, an improved valve assembly which may be manufactured more easily is provided.

Abstract: A fire, smoke and air control damper is disclosed wherein one or more hook-shaped hinge portions formed intermediate between the longitudinal edges of each damper blade engage complementally configured hook-shaped hinge elements formed on opposite sides of the damper frame. A novel notch configuration is made in an inwardly depending flange in the frame on opposite sides, the hinge elements being made from at least a portion of the material notched from the frame. In the closed position, various blade portions engage opposite sides of the inwardly depending flange in the frame to form a seal therebetween, thereby providing a positive pressure resistant seal. The seal is made more complete along the flange in the area of the hinge element because of the novel notch configuration.Several embodiments of actuating the blades to move them between open and closed positions are disclosed. In one such embodiment, a link passes through an arcuate opening in the wall of the frame to engage a linkage rod.

Abstract: There is disclosed a butterfly-type valve cooperable with a valve seat element formed of an elastomeric material, wherein this element also forms a seal between two identical housing halves. There is also disclosed an improved method of making such a valve, as well as a vacuum motor for actuating the valve which incorporates a linkage mechanism having force limiting means to prevent the application of excessive forces to this valve.

Abstract: A liquid sampling device having a tubular section of flexible material having a wall defining a lumen for passage of liquid, and a rigid valve member positioned in the lumen and having a sealing surface for engaging against an inner surface of the tubular section and preventing passage of liquid through the lumen. The tubular section is pressed against the valve member to deform the wall of the tubular section and permit passage of a liquid sample between the valve member and tubular section. The valve member is rotated to a position with at least a portion of the sealing surface of the valve member spaced from the inner surface of the tubular section to permit passage of liquid between the valve member and tubular section.

Abstract: A novel fire, smoke and air control damper is disclosed wherein one or more hook-shaped hinge portions formed intermediate between the longitudinal edges of each damper blade engage complementally configured hook-shaped hinge elements formed on opposite sides of the damper frame. Formed on each of the ends of each damper blade are additional hook-shaped sealing portions which are adapted to mate with the hook-shaped sealing portions of adjacent blades in the closed position in order to form a double seal. A "dead" air chamber is formed between contiguous portions of adjacent blades when those blades are in the closed position. As the blades are slightly displaced towards the open position, a seal is nonetheless maintained between the blades due to the configuration of the sealing portions thereof.

Abstract: A valve for use with high temperature abrasive fluids includes a valve body having an outer shell of metal, such as low carbon steel, a refractory liner attached to the shell comprising an insulating outer layer of relatively low density castable refractory material, such as alumina, an inner layer of relatively high density castable refractory abrasion resistant material attached to an inner surface of the insulating layer, and a flame sprayed ceramic coating applied to an inner surface of the abrasion resistant castable refractory layer defining a flow passage in the valve body for the passage of fluids. The valve body includes a removable core assembly containing the working parts of the valve.

Abstract: A butterfly valve includes a housing, a pivotal stem mounted on housing, and a disk mounted on the stem and tiltable within the housing to control the flow rate of a fluid. Means for attaching the stem to the disk includes a keyway defined by one of the stem and the disk, and an associated pin carried by the other of the stem and the disk. The keyway includes a ramp inclined with respect to the stem at a particular angle, and portions of the pin slide on the ramp in response to temperature change of the fluid to accommodate radial and axial displacement of the disk with respect to the stem. The particular angle of the ramp can be made dependent upon the diameter of the stem and the distance between a fixed point along the stem and the ramp pin. With this particular angle, the pin will slide on the ramp radially and axially of the stem while maintaining a fixed angular relationship between the stem and the disk.

Abstract: A butterfly valve comprising a body having a cylindrical passage and a diametral pivot pin and a butterfly valve plate fixed to the pivot pin. The plate is formed with a planar central portion at which the pin is connected to the plate. In assembly, the pin is first placed in position and then the valve plate is adjusted angularly and radially until the periphery of the plate is in sealing relation to the inner surface of the passage. The plate is then fastened to the pin by welding.

Abstract: A butterfly valve assembly particularly suitable for large size fluid-carrying pipes. Instead of using a unitary disc as the rotatable valve element, two offset half discs are provided, staggered by the diameter of a pipe or sleeve surrounding and connected to the shaft which is rotated to open and close the valve. Sealing half-rings connected to each half disc and projecting beyond their perimeters abut against a radially inwardly extending shoulder on an interconnecting pipe or housing between two confronting large pipe ends. Thus no rubbing of the sealing parts results and a positive seal is provided. Means are provided for access to the butterfly disc assembly for replacing the sealing half rings without taking the entire assembly from the line.

Abstract: A valve for use with high temperature abrasive fluids includes a valve body having an outer shell of metal, such as low carbon steel, a refractory liner attached to the shell comprising an insulating outer layer of relatively low density castable refractory material, such as alumina, an inner layer of relatively high density castable refractory abrasion resistant material attached to an inner surface of the insulating layer, and a flame sprayed ceramic coating applied to an inner surface of the abrasion resistant castable refractory layer defining a flow passage in the valve body for the passage of fluids. The valve body includes a removable core assembly containing the working parts of the valve.

Abstract: A butterfly valve apparatus comprising a rotating shaft, a valve stem movable by the rotating shaft through a coupling member and a valve plate fixed within a valve housing to the valve stem.

Abstract: A butterfly valve apparatus comprising a rotating shaft, a valve stem movable by the rotating shaft through a coupling member and a valve plate fixed within a valve housing to the valve stem.

Abstract: A butterfly valve of large diameter which comprises a body with a substantially cylindrical inner bore, internally lined with a ring that terminates at lateral flanks of the valve; a butterfly pivotally mounted in the body by means of valve spindles that pass through the body and the ring; wherein the body includes at least two annular grooves that are coaxial with respect to the bore; the ring being constructed with several aligned sections, such as two curvilinear sections and a plurality of rectilinear sections; wherein the ends of the sections are formed and vulcanized to shape after having been aligned; the ring further including, on its side adjacent the body, at least two annular tenons with heads that respectively engage the grooves, these tenons being smaller than the groove inlets; an empty space being provided between the tenons and the grooves, filled at the time of assembly with a plastic material that hardens by polymerization, for example an epoxy resin.

Abstract: The valve has a closure member in the shape of a dish which has an end wall and a flared lateral wall and is pivotable in the passage of the valve body between a closing position and a maximum opening position which is substantially perpendicular to the closing position. The lateral wall makes an angle of 100-130.degree. with the general plane of the end wall. The concave side of the closure member faces in the upstream direction of the closing position. The axis of rotation of the closure member passes through the lateral wall of the closure member.