Abstract: An improved ball valve (1), in particular for gas systems, comprises a tampering indicating seal (25) made by injection molding a synthetic or metal material into cavities (19; 21; 22) formed in the screw-clamping nut assembly (11, 13) and including a cap outer portion (29) which substantially covers the surface of the outer face of the nut (13) and/or extending (29A) on the side surface or said nut (13).

Abstract: A valve with a calibrated flow orifice insert for use in Heating, Ventilation, and Air Conditioning (“HVAC”) applications so as to provide metered flow through the valve. The insert is used as a flow control device and is inserted into a conventional threaded ball valve. The insert has a cylindrical axial bore that is sized to provide a maximum valve flow coefficient. Peripheral threads on the insert mate with interior threads on the inlet of the valve body. A pair of bores on the face of the insert permit threaded insertion into the valve. The axial orifice bore through the insert is sized using experimentally-determined formulas related to the Reynolds numbers for the orifice and for the piping upstream of the insert.

Abstract: A leakproof ball valve structure includes a valve body, two side covers, a ball, two leakproof assemblies, and a central shaft. Each of the two leakproof assemblies includes a retaining ring, a seal ring, a leakproof ring, a washer, and an elastic member. The fitting portion of the retaining ring is serially provided with the leakproof ring, the washer, and the elastic member. Thus, the elastic force of the elastic member will not be reduced due to pressure, thereby enhancing the leakproof effect of the ball valve and the lifetime of the elastic member.

Abstract: A rotary-body type throttle valve for a spark ignition internal combustion engine is disclosed. The valve includes a valve casing, an intake passage formed with a rotary-body recess portion, a valve element having a rotary-body shape which is rotatably fitted into the rotary-body recess portion of the valve casing, and a communication passage that permits an upstream intake passage and a downstream intake passage to communicate with each other is formed in the valve element. The upstream intake passage and the downstream intake passage sandwich the rotary-body recess portion of the valve casing. A through hole which is directed from the communication passage of the valve element in a direction intersecting a central axis of the communication passage and reaches only one of rotary outer surfaces of the valve element is formed in the valve element. This arrangement results in a reduced flow resistance by decreasing the size and number of vortices generated during partially opened states of the valve element.

Abstract: A fluid flow control apparatus for controlling and delivering fluid at a continuously variable flow rate to a hose. The fluid control apparatus comprises a fluid-tight housing for housing a control assembly, a rotating ball valve for allowing fluid to flow therethrough and increasing or decreasing the amount of fluid flow, a fluid hose for supplying fluid therethrough, and a switch attached to the outflow end of the fluid hose for activating the control mechanism.

Abstract: A leakproof ball valve structure includes a body receiving a ball that is driven by a central shaft. A leakproof assembly is respectively mounted between the body and a side cover. The leakproof assembly includes a retaining ring having a first end formed with a flange closely fit in the body, and a second end formed with a fitting portion rested on the side cover, and a seal ring secured in the retaining ring and urged on the ball. The fitting portion of the retaining ring is serially provided with a leakproof ring, a washer, and an elastic. Thus, the elastic force of the elastic member will not be reduced due to pressure, thereby enhancing the leakproof effect of the ball valve and the lifetime of the elastic member.

Abstract: A gaseous alternative fuels vehicle has a vehicle body with an engine and a gas fuel tank. A gaseous fuel supply system establishes gas communication between the engine and the gas fuel tank. The gaseous fuel supply system includes a valve having a valve body with a housing having a first unvalved port and a second unvalved port. A through-flow channel extends between the first unvalved port and the second unvalved port. The through-flow channel provides continuous gaseous communication between the first unvalved port and the second unvalved port. A valved port is in gaseous communication with the gas fuel tank, and a valving channel extends between the valved port and the through-flow channel. The valving channel provides valved gaseous communication between the valved port and the through-flow channel. A flow controller has a valve element within the valving channel at a valve location.

Abstract: A valve for controlling fluid flow is provided. The valve includes an actuating stem for controlling the flow of fluid through the valve, a valve member with a positioning formation and an opening for permitting fluid flow, a valve body portion, and at least one insert or compressor for retaining the valve member within the valve body portion. The valve body portion is comprised of a formable material—such as a metal—that is formed about the valve member in connection with an applied load. The valve body portion further includes a first open end with a first diameter; a second open end with a second diameter that is sufficiently large enough to permit insertion of the valve member; a stem opening for receiving the actuation stem; and an internal member-receiving portion for receiving the valve member in proximity with the stem opening.

Abstract: An annular valve seal is configured for use in a valve housing containing a rotatable-type valve that moves between open and closed positions and an internal annular groove that receives the seal. The seal comprises a resilient ring having an annular inner portion with an annular interior surface and an annular outer portion with a pair of lobes. The pair of lobes diverge axially away from each other as they project radially outwardly from the inner portion of the ring. The ring has a cross-sectional area that leaves voids between the internal annular groove and axially opposite end surfaces of the ring when the ring is inserted into the internal annular groove and the valve is in the open position.

Abstract: A method and apparatus for controlling fluid flow with a quarter-turn plug valve with seats operated to lift off the sealing surface of the plug prior to plug rotation and to reseat upon completion of plug rotation. One embodiment shown relates to a quarter-turn rotary plug valve having a handle operable through a 90 ° angle and having both upstream and downstream seats which are operated to lift off from the sealing surface of the plug prior to initiation of plug rotation and then reseat upon completion of plug rotation.

Abstract: The present finding relates to a bidirectional ball valve usable particularly for ecological frigorific gases, which comprises a valve body housing a ball shutter connected to a control rod sealingly protruding from said valve body.

Abstract: A distributed system for draining and filling oil reservoirs in engines includes an electrically powered reversible pump, a relocated oil filter, a shutoff valve and a plurality of hoses to direct oil through the pump and valve to drain or fill the engine. The valve and oil filter are located remote from each other preferably adjacent the top of the engine to be readily accessible from above without lifting the vehicle. The fluid and electrical connections to the pump include quick connect fittings that allow for the use of a portable pump to which temporary connections are made.

Abstract: An improved apparatus and method are provided for irrigation systems such as automated sprinkler systems. A pre-assembled housing or valve box includes an inlet for receiving water and one or more outlets for distribution of water to other components in the irrigation system, and also includes manifolding and power and valve means for selectively controlling the flow of water from the outlets. Many of the manifold components are integrally molded with each other and provided in modular form so that the system can be relatively compact and can be customized into a variety of configurations. The manifold can consist of or include integrally formed or interconnected valve bases. The electrical power system includes a main terminal box with power lines leading to connectors adjacent each outlet, so that solenoid valves may be readily connected thereto and replaced as necessary. O-rings, non-conducting gel, and similar mechanisms are provided to ensure the water-tightness of the electrical connections.

Abstract: An improved metal ball valve for gas comprises a shutter housing chamber in which are provided two opposite sides or flats allowing to define annular recesses in which shutter sealing gaskets are substantially integrally engaged. The shutter weight is advantageously reduced by providing, for example, a bottom flattened portion and an axial hole, the shutter forming moreover, with the valve rod element, preferably a single-piece assembly, the rod-shutter assembly being held in the body of the valve by upsetting thereon the thinned end crown of a collar of the valve body.

Abstract: A valve has an integral flow switch with a passageway provided through the valve member such as a butterfly disk to an inlet of the flow switch. An outlet of the flow switch communicates with the outlet of the valve.

Abstract: A spherical valve is formed of a main body, a cover, and a spherical body. The main body is of a hollow construction and is provided in the interior with a partition dividing the interior into an inner receiving cell and an outer receiving cell. The main body is provided at both ends with a threaded tubular portion in communication with the inner and the outer receiving cells. The cover is provided in the inner side with an annular body having an annular clamp seat. The spherical body is located between the main body and the cover and is provided in the interior with an L-shaped channel to be oriented in accordance with the opening and the closing of the spherical valve.

Abstract: A valve and valve arrangement for a fire suppression system includes a valve having an inlet and an outlet provided on opposite ends of the valve housing with a pressure relief valve in communication with the interior of the housing. A gap in a seat for the valve member provides communication with the inlet of the valve. In another embodiment, a valve has a disk provided in a passageway through the valve member to restrict the flow through the valve to a predetermined rate which is less than the fully opened flow rate through the valve.