Abstract: Connection valve for the temporary connection of equipment to conduit systems for pressure fluids, which valve has at least one terminal valve attachable to the conduit systems and including a normally closed spring pressed check valve, a control valve, quick coupling means detachably connecting said terminal valve to said control valve and said control valve having an adjustable prismatic pin having a space therearound and engageable with said check valve for opening the same as desired providing communication for fluids between said terminal valve and said space around said pin in said control valve and said control valve having a side outlet communicating with said space around said pin for receiving fluid therefrom.

Abstract: A mount for securing an actuator cylinder on a gate valve, wherein the valve has a stem extending through a sleeve on the valve bonnet and the actuator cylinder has a collar mounted on the sleeve. The actuator cylinder is mounted such that it will not rotate on the sleeve. A split ring is mounted in a groove in the outer end portion of the sleeve at the collar. A means mounted on the sleeve extends over the split ring to detain it in mounted position.

Abstract: A butterfly valve comprising a body having an internal cylindrical bore with two radial co-axial passages diametrically opposed with respect to the bore and a butterfly including a spherical cap section and two co-axially projecting shafts rotatably mounted in the passages to provide pivotal movement of the butterfly in the body. An annular elastomeric seat member of U-shaped section covers the bore and the outer side faces of the body and the seat receives the shafts of the butterfly and includes at each of the passages a portion of spherical shape substantially complementary to that of the cap section of the butterfly. The seat has a cuff portion surrounding the associated shaft and a support which is independent of the seat bears against the base thereof.

Abstract: Apparatus and method for sealing a shaft extending between a high-pressure region and a low-pressure region so that the seal life is long, and so that stem torque as a result of the sealing is kept to a minimum. A plurality of sealing elements are provided and arranged so that the differential pressure across any one sealing element is only a fraction of the pressure differential between the high-pressure and the low-pressure regions. Flowable plastic or the like under selected pressures is injected and maintained between adjacent sealing elements.

Abstract: A mechanically packed gasket is supported circularly concentric on the operator shaft of a butterfly valve in a wedged interfit with an inwardly chamfered end of the shaft journal. With gasket pressure of magnitudes greater than line pressure, leakage of gas from the valve passage past the actuator is prevented. At the same time, gasket pressure against the operator shaft prevents leakage to atmosphere of any gas content inadvertently obtaining access to the shaft surface either by leakage into the vane cavity through porosity of the vane or through functional failure of other shaft seals. Located outward of the shaft journal in a leakage path parallel to that of the gasket is a lubricant packing construction enabling in-service maintenance to be performed against the journal in the event line content leakage should be encountered there.

Abstract: An underground valve has an operating rod extending above the ground which may be rotated to shut the valve off or turn the valve on. Difficulty with freezing prevents the valve operation at certain times during the winter months and by having the rod located within an external protective tube and sealed therein by a cylindrical element which is rotatable with the rod relative to the tube, whereby the operating rod for the valve can always be rotated since no ground water can get into the tube which extends below the frost line and above the ground.

Abstract: The diaphragm valve has a valve body portion with a chamber therein. The chamber has an open top portion and an inlet and outlet communicating therewith. The valve body has a valve seat in the chamber. The valve member is positioned in overlying relation with the valve seat and is arranged to control the flow of fluid through the chamber. A yoke member connected to the valve body within the upper portion of the valve chamber has an axial passageway therethrough. A bonnet having a passageway therethrough is coaxially aligned within the yoke member. A valve stem is arranged for reciprocal movement within the yoke member and bonnet passageway. A diaphragm assembly is positioned within the valve chamber between the valve stem and the valve member. A spring urges the valve member upwardly against the underside of the diaphragm assembly to open the valve. A packing ring surrounds the valve stem and is positioned within an annular recessed portion of the bonnet passageway.

Abstract: A shaft seal device for a butterfly valve shaft wherein a friction face seal device having a flexible double bellows arrangement thereon is disposed within a seal chamber between a contaminated source of pressurized steam and a low pressure gland condenser. A buffer layer of uncontaminated steam having a pressure higher than the pressure of the contaminated steam is introduced into the seal chamber through conduit means. The buffer layer of uncontaminated steam having a pressure higher than the pressure of the contaminated steam is disposed between the contaminated steam source and the gland condenser to insure zero leakage of contaminated steam past the double bellows seal device into the gland condenser.

Abstract: A valve is disclosed that has an upper stem and a lower stem that are received in a gland and connected together by a threaded connection. The gland has an axial slot and the lower valve stem has a diametrically extending pin that extends into the slot so that when the upper stem is rotated, the lower stem moves axially into engagement with a valve seat thereby eliminating a rotation of the lower stem which insures against the stem rotating on the valve seat and prevents galling and reduces backlash between the upper stem and the lower stem to being almost non-existent without requiring periodic adjustment to compensate for wear.

Abstract: A ball valve assembly including an easily replaceable stem seal capable of utilization as a primary or secondary seal in a closed circuit system such as a refrigeration circuit or the like where it is (a) not feasible to open the system for changing a leaky seal, or (b) not easy to remove a stem seal from a deep thin annular recess immediately adjacent the valve stem. In the assembly of the invention, the stem seal is located on the valve body between it and a control housing portion which encloses the outer part of the valve stem and packing. A part of the control housing portion may also be rotatably connectable to the valve stem and have external lever means for opening and closing the valve without separating the part from the valve body.

Abstract: A valve, such as a butterfly valve, having an offset closure vane supported on stub shafts for operating the vane in the flow passage of the body, has all exposed and/or potentially vulnerable metal surfaces encapsulated in a corrosion resistant polymeric plastic coating. Annular seals of resilient composition bonded to a steel insert are formed with an annular radial recess at an axially intermediate location and are positioned on the vane shafts axially squeezed between vane and body bosses thereat. In this arrangement, controlled deflection is provided by the seals in effecting a positive sealing pressure whereby the shafts are protected against exposure to line content. At the same time, the seals are rendered self-packing in response to pressure of line content while also functioning to assure concentric centering of the vane in the body passage.

Abstract: A valve for regulating flow in a flow passage with the valve actuating mechanism being isolated from contact with the material passing through the valve and being responsive to various external conditions and adjustments which enables the valve to be utilized in many installations. The valve includes a plug assembly disposed axially of the valve body and the plug assembly includes a hollow stem and transverse ports adjacent the head of the valve to define the flow path for material through the valve.

Abstract: A flush valve construction consists of a jacket and piston assembly for controlling fluid flow. An integral metering passage stop and vacuum breaker are associated with the piston assembly for controlling the operation of the valve. Operable means are adapted for displacement of the piston assembly and adjustment of the stop. Repair and adjustments can be made without disturbing associated plumbing.

Abstract: A butterfly gate valve for control of water in treatment, waste water plants and the like, wherein the gate is mounted on a one-piece shaft. The lower end of the shaft rotates in a radial bearing, and a radial bearing and a thrust bearing are provided on the upper end of the shaft above the gate. The upper bearings are housed in a protective bonnet and may be sealed from access of water. The upper bearings are easily accessible through a removable bonnet cover. The vertical position of the leaf within the frame is adjustable by means of a rotatable threaded member reacting against a mating member above the frame.

Abstract: A gate valve structure for use in mains carrying fluid, such as water mains or the like, the gate valve structure having a non-rising stem-type actuating mechanism. The gate valve structure includes a hollow gate member having a chamber therein open to the exterior and a valve stem which extends through the valve casing to the exterior thereof, the valve stem having exterior threads cooperating with interior threads carried by the gate member and the arrangement being such that the threads of the valve stem are completely protected from water and foreign material, such as dirt and abrasives and the like, when the gate member is in its completely opened position. This arrangement reduces torque necessary to operate the valve to the closed position.

Abstract: The specification and drawings disclose a ball valve designed to be highly reliable and easily maintained. The disclosed valve comprises an intermediate body section positioned between a pair of end fittings which are connected to the body by a plurality of longitudinally extending tie bolts. The tie bolts are arranged so that with removal of one, preferably color-coded or otherwise identified, the body can be pivoted outwardly from between the end fittings. The valve further includes seal assemblies axially removable from the ends of the intermediate body section and arranged to provide a seal between the end fittings and the body as well as between the body and an internally mounted valve ball. An improved stem seal and operating handle assembly for the valve are also provided in the valve.

Abstract: A small ball valve for chemically active materials is provided which does not require the strength of metal parts and which permits the use of brittle material such as glass or ceramic as well as materials such as fluorocarbon polymers and polytetrafluoroethylene which are resistant to the action of chemically active fluids. A free-floating construction is provided without requiring a stem packing gland and permitting the stem to be integral with the ball. Identical sealing rings are provided with clamping screws which press the sealing rings inward against the ball and outward against the openings in the valve body, the diameter of the valve stem being smaller than the opening in the sealing ring and clamping screw therefor so that the portion of the ball surrounding the valve stem may also float freely under the sealing means with the seal around the ball stem being against the ball itself instead of against the valve stem.

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: External leakage around the actuator-stem of a plug valve is prevented by the application of forces to the lower surface of the valving member whereby to normally advance and maintain sealing surfaces on the upper end of the valving member against and in sealing relationship with a diaphragm.