Abstract: A rotary plug valve actuator comprising a mounting bracket, a ball screw mechanism pivotably mounted to the mounting bracket and a lever pivotably mounted to the ball screw mechanism. The ball screw mechanism includes a ball screw shaft and a ball nut. The ball nut moves axially on the ball screw shaft when the ball screw shaft is rotated. The lever converts the axial movement of the ball nut to rotary motion. In that way, rotation of the ball screw shaft will in turn actuate the rotary plug valve. An associated rotary plug valve assembly and an associated method of actuating a rotary plug valve are also provided.

Abstract: A valve assembly for use in association with a water tap having a valve seat (17) located in a passageway between a fluid inlet (15) and a fluid outlet (16) and having an axially recessed spindle (18) adapted for movement toward and away from the valve seat, said valve assembly comprising a resiliently deformable spherical sealing member (11), and a plunger member (10) for moving said sealing member against said valve seat, said plunger member including a stem (14) for location within the spindle recess, and a helical spring (12) which extends between the valve seat and a portion of the tap through which the spindle extends.

Abstract: A screw-in throttle valve and pressure gauge assembly including a valve member and a selectively rotatable screw-in member operatively associated with the valve member for permitting selected positioning of the valve member with respect to a valve seat. The screw-in valve member supports a pressure gauge at a location outside the valve body and the valve member is formed with a capillary bore communicating between a first flow duct downstream of the valve seat and the pressure gauge so that when the screw-in member and valve member are selectively positionable for varying the gap between the valve seat and valve member the valve gauge is simultaneously moveable with the valve member and screw-in member for directly measuring the pressure at the first flow duct without alteration of the pressure gauge.

Abstract: A plug valve is disclosed which has a radially outwardly directed projection at the end of the valve stem, the projection being received in a complementary cylindric chamber in the plug of the valve for easy exchange of the plug during maintenance of the valve. The plug is freely rotatable relative to the stem of the valve. In the preferred embodiment, the stem of the valve does not rotate during the opening or closing motion. The invention provides a simplified structure, improves reliability of the valve and the simplicity of exchange of the plug in maintenance.

Abstract: A valve includes a hollow body having both a valve seat, and a threaded portion having helical right-handed threads. A stem disposed within the body has a threaded portion at one end, with left-hand threads. The stem is moved within the body by turning a cap assembly which has both a left-hand threaded portion engaging the threaded portion of the stem, and a right-hand threaded portion engaging the threads on the valve body. Large stem displacements per turn are realized.

Abstract: A drain plug apparatus includes securement to an associated fluid reservoir, wherein the apparatus further includes a pressure nut mounted to the reservoir, with a discharge screw directed through the pressure nut, wherein the discharge screw includes a central conduit cooperative with and in fluid communication with a through-extending head conduit arranged orthogonally relative to the through-extending conduit to direct fluid from the reservoir exteriorly thereof. The discharge screw includes a conical head to be received within a conical seat formed within the pressure nut. The pressure nut may include a boss directed exteriorly of the pressure nut and integral therewith to receive a tube thereabout to permit directing of discharge fluid through an associated flexible tube to be received within an associated container.

Abstract: In a gate valve, the valve member is connected to an operating stem which extends upwardly through an opening in the housing for connection to a hand wheel rotatably carried by a yoke through which a portion of the stem extends; rotation of the hand wheel is transferred to linear motion of the valve stem through a split pair of threaded nut members the upper one of which is rotatably engaged with the hand wheel and the lower one of which is rotatably carried in a bore of the support yoke through which a threaded portion of the stem extends; the upper and lower nut members are intergaged to prevent relative rotation therebetween and are of identical configuration.

Abstract: Arrangement for damping linear movements intended for use on a safety valve. An arrangement for damping linear movements of the valve spindle (10) of a safety valve of small amplitude and high frequency comprises two counter-rotatable damping parts (18, 36) with intermeshing wall (22, 24, 32) which delimit narrow working gaps (44, 46) containing a high-viscosity silicone grease. The linear intake movement is converted by a threaded drive (12, 40) into a rotary movement during which the silicone grease (47) in the working gaps (44, 46) is subjected to shear forces and eliminates the unwanted energy by virtue of its internal friction.

Abstract: An improved stop valve eliminates the need for O-rings and washers. The valve contains a one piece unitary stem formed of resilient compressible plastic material. The stem contains three separate seals and fits within, extends through and is moveable in a valve sleeve. Operating the handle moves the stem axially between a first axial position in which the valve is fully open and a second axial position in which the valve is fully closed. The first seal is operative to provide a seal responsive to said stem being in the first axial position, the second seal means is operative to provide a seal responsive to said stem being in the second axial position, and the third seal is operative to seal in all axial positions.

Abstract: A bellows valve comprises a main body defining a valve chamber including a valve seat having inlet and an outlet passages connected therewith. A vlave element is positioned in the chamber and has an operating stem with a free end extending axially therefrom. An actuating assembly for moving the valve element toward and away from the seat, includes a rotatably mounted actuating shaft having a free end axially aligned with the free end of the operating stem and an operator for selectively producing axial movement of the actuating shaft. The operating stem is joined to the actuating shaft by a connection including a first ball member positioned axially between the free ends of the operating stem and the actuating shaft with a spring engaged with the first ball member and acting to bias the free ends of the operating stem and actuating shaft axially apart. A plurality of second ball members interconnect the stem and shaft for preventing axial separation of the free ends while permitting free relative rotation.

Abstract: A valve device for a gas cylinder or the like, characterized in that it comprises an axially mobile piston (3) within a valve-body (1) coming to bear by one end against a seat (2), the piston moving axially by means of a handwheel (4) to which it is connected by an assembly (9, 10) allowing the rotation of the handwheel in relation to the piston.

Abstract: A valve of the outside seal and yoke variety is provided, with a seal between a bonnet base and a valve body being axially spaced between a valve seating member and mating threads on the valve body and bonnet base. An end of at least one packing bolt is positioned within a cavity formed within the valve body, and prevents the bonnet base from unthreading from the valve body. A yoke threaded to the valve stem is rigidly secured to the bonnet base by a pair of yoke bolts and intermediate supports, and prevents inadvertent rotation of the packing bolts. The assembly technique of the present invention provides an inexpensive yet reliably OS&Y valve with all desired structural components being rigidly connected. The bonnet assembly of the present invention may be utilized with a conventional valve body and pocket design, thereby substantially increasing versatility and reducing manufacturing costs.

Abstract: A metering valve having a one-piece bonnet for reducing problems resulting from tolerance stack up. A guide portion is included on the nose of the bonnet for cooperation with a valve body bore to ensure concentric alignment between the metering pin and its associated orifice. A pair of O-rings on the valve stem cooperate with the bonnet bore to absorb forces and substantially reduce the potential for galling and breakage of the metering pin. One of the O-rings is compressed to a substantially greater extent than the other to aid in achieving better alignment between the stem and bonnet, and to obtain a firmer feel. A handle is included at the outer end of the valve stem and receives an upper portion of the valve bonnet. A packing is interposed between the handle and valve bonnet upper portion for limiting lateral movement between the handle and valve stem. The packing may be selectively adjusted without altering a preset deadstop position of the valve.

Abstract: An electronic expansion valve comprising a stepping motor, motion conversion member for converting the rotational motion of the stepping motor to a screw motion, a valve pintle coupled to the motion conversion means to be rectilinearly displaced and having pistons at both ends of the valve pintle, of which the pistons are slidably supported on valve casing members, a valve body formed as an integral part of the valve pintle at an intermediate portion thereof, and a valve seat which has such an outer surface that when the valve pintle is displaced with respect to the valve seat in either direction, the cross sectional area and the shape of a passage defined between the valve seat and the valve pintle are smoothly varied. The valve can be used in refrigeration cycle with a compressor. Stable operation of the refrigeration cycle is obtained.

Abstract: A faucet repair system is provided for the removal of loose or broken faucet components, debris or other material which may be lodged in a faucet body or water feed line. A hollow coupling having threads identical to the bonnet or stem nut of the defective faucet includes a collar over which an outlet tube is connected. The bonnet or stem nut and stem are removed and the coupling is screwed into the faucet body. A bend in the tube directs water flow into a lavatory or sink basin when the water feed line shutoff valve is then opened. The water flow carries with it the loose material. A modified outlet tube includes a trap which retains the dislodged article and is suitable for elongate objects.

Abstract: A freeze proof faucet which is adapted to be mounted to an exterior wall and comprises an elongated tubular housing defining an interior housing chamber. The housing is mounted to the wall and the interior end of the housing is connected to the water supply while an outlet is formed on the housing outside the wall. An elongated valve member is longitudinally slidably mounted within the housing and movable from a closed position, in which one end of the valve member sealingly engages and closes a valve seat adjacent the innermost end of the housing, and an open position in which the valve member permits water to flow from the inlet, through the housing and out through the outlet. A valve actuator is threadably mounted to the housing on its exterior end and includes a pusher surface which cooperates with an abutment surface formed on the valve member.

Abstract: A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve plate having a fluid passage therethrough and hollow cylindrical metal tubes welded to the hemispheres along the edges of circular holes cut in the hemispheres. One tube on each hemisphere serves for fluid flow. Another internally and externally threaded tube on one hemisphere serves as a valve sleeve through which a rotatable and axially shiftable externally threaded valve spindle extends. The cylindrical inner end of the valve spindle extends into a cylindrical recess in a valve disc which releasably engages a valve seat around a fluid flow passage in the valve plate.

Abstract: A stop valve includes a main body which defines a fluid passage and a valve chamber. The stop valve further includes a spindle having one end connected to a handle and the other end inserted into said valve chamber, a valve seat positioned in said fluid passage and confronting said valve body, and a cap member positioned above said valve chamber. The outer end of the spindle is coupled rotatably to the valve body, while the rotation of the valve body is prevented by a rotation preventive means. A packing is interposed between the valve body and the valve chamber. The valve body is in sliding contact with said packing along the axial direction thereof during operation, upon rotation of the spindle about its axis.

Abstract: A bellows-type valve includes several additional safeguards in the form of back-up seals which are effective to prevent in- or out-leakage should the bellows fail. Some of the seals can be changed while the valve remains closed. There is provision for testing the integrity of the seals while the valve remains operative.

Abstract: A top operated tank car valve assembly includes a rod extending downwardly from the top of the tank and is attached to the valve stem of a lading valve located in the bottom of the tank. The stem engages a threaded valve sleeve provided with a mounting flange which engages a cooperating mounting flange on a valve cage. Fasteners engage the upper surface of the sleeve, and extend through the valve cage and engage threaded openings in a tank car bottom outlet mounting flange. The cage includes a valve seat for a valve closure. The valve seat is formed on the lower, internal surface of the valve cage, and circumferentially spaced openings are formed in the valve cage for lading flow. Laterally spaced projections extend upwardly from the lading valve closure. A valve stem retainer includes a pair of formed retainer members which define a cavity or opening.

Abstract: A valve is provided which includes a poppet enclosed in a plug of plastic material, such as Teflon, and which is biased against a seat by a compression spring so that a positive seal is provided even in the presence of cold flow in the plastic plug. A valve stem engages the poppet, and it serves to pull the poppet and plug away from the seat against the force of the spring when the valve is opened, and to force the poppet and plug against the seat when the valve is closed. The valve may be hand operated, or it may be operated by a pressurized fluid, such as air. An indicator is included in the assembly which provides a readily visible indication of any leakage within the valve housing.

Abstract: In accordance with the present invention, a top operated tank car valve assembly includes a rod extending downwardly from the top of the tank and attached to a valve stem of a lading valve located in the bottom of the tank. A valve seat for the lading valve is located in an opening in the tank bottom and a valve cage includes circumferentially spaced openings formed in the valve cage for lading flow. A unitary valve guide, valve closure and stem retainer is provided. The unitary element includes a lower closure portion having a hub and a circumferential slot adapted to receive a closure seal. A fastener holds a seal retainer in engagement with a seal and with the closure portion. A valve guide portion extends upwardly from the valve closure at its periphery and is generally circular for a large portion of its circumference. The guide portion includes a guide portion opening on one side. A retainer portion located radially inwardly from the guide portion extends upwardly from the closure portion.

Abstract: A replacement valve stem assembly for a faucet in the form of an internally and externally threaded sleeve extending through and secured by nuts to the faucet cap and a threaded valve stem engaging the internal threads of the sleeve and having a valve washer secured to the inner end thereof and a faucet handle secured to the outer end thereof.

Abstract: A high pressure valve of the type employing a non-rotating valve needle having a tapered tip which may be selectively moved between seated and unseated positions relative to a valve seat in a valve chamber. The valve seat is tapered inwardly and has a smaller taper angle than the valve needle. A valve actuating stem is received through a valve packing nut with the actuating stem having a bifurcated inner end defined by a transverse, generally rectangular bore intersected by an axially directed slot. The slot is somewhat smaller in breadth than the width of the bore and extends between the bore and the innermost end of the stem. The valve needle includes an enlarged cylindrical or spherical connecting end adapted to be received in the actuating stem bore and slot. Sealing for the needle is provided by a sealing medium comprised of a combination of a seal member received between a pair of seal washers in an enlarged coaxial area at one end of the valve chamber.

Abstract: A position indicator is used to indicate the opened and closed positions of a rising stem valve. A sleeve is provided which is adapted to be attached to a handwheel and turns with the handwheel. A tubular shell is provided which is adapted to be attached to the valve stem and to be disposed within the sleeve so that it raises, lowers and rotates with the stem. At least one magnet is supported within the sleeve to rotate therewith. First and second reed switches with associated wiring are supported by the shell to be raised and lowered relative to the magnet for closing of the switches at the opened and closed valve positions.

Abstract: A do-it-yourself kit for charging an automobile air conditioning system. A charging hose has a special delivery fitting to be connected first to the charging nipple on the suction side of the compressor of the operating system. Such fitting has a depressor to open the nipple valve and has a check valve to prevent escape of refrigerant by backflow through the hose. The fitting thus isolates the kit from refrigerant pressure. The charging hose also has an inlet fitting for attachment to the nipple of a pressurized refrigerant can, which has a depressor to open the nipple valve. Refrigerant then flows under can pressure to the system. Unused can refrigerant is saved by disconnecting the fittings in reverse order. Since the hose and kit are isolated from system pressure by the check valve, increased safety is obtained and the hose assembly can be made of low-cost materials which can be discarded after use.