Electronic position indicator for latching solenoid valves
Electronic circuit connected to solenoid valve coils visually indicates the position of the valve stem. Transient suppression is provided to prevent damaging voltage spikes.
Fischer, R.↗
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Surface treatment for valve seats
Valve with embedded fine particles of diamond in the metal surface of the valve seat resists galling, corrosion, erosion, and cold welding. Diamond powder has an average particle diameter of 0.01 micron and is used with a standard fine diamond polishing compound.
Macglashan, W. F., Jr.↗
Inexpensive tamper proof safety relief valve
Basic relief valve has added safety relief valve capability that relieves overpressure before failure can occur. It may be installed in inaccesible areas with a high degree of reliability, constructed from a variety of materials, and adapted to the user's specific application.
Frankewich, P. A.↗
Bistable fluidic valve is electrically switched
Bistable control valve is selectively switched by direct application of an electrical field to divert fluid from one output channel to another. Valve is inexpensive, has no moving parts, and operates on fluids which are relatively poor electrical conductors.
Fiet, O.↗
Long life, low cost ball valve, with lifted seals and cartridge type construction
Ball valve design incorporates modular construction in easy-to-install, easy-to-replace cartridge housing, and a system of cams to lift upstream and downstream seals away from the ball during rotation. Tests conducted on nitrogen tetroxide prove new valve to be more efficient than previous models in preventing leakage.
Carriker, J. W.↗
Low leak rate poppet-and-seat check valve
Valve leakage due to contaminant entrapment and chattering is effectively minimized by a metallic poppet-and-seat check valve designed for use in extreme environmental and fluid temperature conditions.
Whitten, D. E.↗
Reduction of valve leakage - A concept
Leakage elimination occurs by increasing pressure on poppet seat, heating poppet plunger or cooling valve body, and then exerting force between 4.45 and 44.5 kN at poppet seat interface. Valves are useful in handling of corrosive fluids.
Doshi, N. H.↗
Liquid-fuel valve with precise throttling control
Prototype liquid-fuel valve performs on-off and throttling functions in vacuum without component cold-welding or excessive leakage. Valve design enables simple and rapid disassembly and parts replacement and operates with short working stroke, providing maximum throttling sensitivity commensurate with good control.
Mcdougal, A. R.↗
Proportional pulsed pilot valve
Proportional pulsed pilot valve using conventional efficient solenoid valve for pilot stage provides proportional thrust control for cold gas thrusters with zero leakage of main stage.
Rusk, S. J.↗
Space-storable oxidizer valve Final report
Fabrication and acceptance testing, fluorine compatibility testing, valve refurbishment and testing, environmental testing, and design of space storable oxidizer valve
De Gennaro, T. R.↗
Apollo Service Propulsion System Rocket Engine Bipropellant Valve Improvement Program
Apollo service propulsion system rocket engine bipropellant valve improvement program - valve design guide and oxygen-hydrogen technology
Source record↗
Solenoid-operated swing-check valve
Modification of spring-loaded swing-check valve for solenoid operation provides low-vacuum swing-check valve which can be operated remotely.
Quattrone, P. D.↗
Hydraulic valve lifter remover
Threaded rod, mounted in tubular housing which is flanged and expandable at one end, removes valve lifter after removal of valve covers and push rods.
Horton, R. F.↗
Combination throttle and shutoff valve
Combination of translating sleeve throttle valve and conventional poppet valve provides capability of shutting off flow completely by poppet and sleeve control of the rate of flow. Integration of the two concepts can be accomplished without difficulty and in a manner that requires a minimum of development.
Carriker, J. W.↗
Stem clutch for motor driven valve
Development of mechanical device to reduce possibility of damage to motor driven needle valve is discussed. Mechanical clutch is employed to allow slippage when needle valve reaches limit of travel. Operation of system for various conditions is described.
Blum, D. E.↗
Self-aligning, low-pressure sealing poppet valve
Design and characteristics of poppet valve operated by very low differential pressures to control fluid flow are described. Valve is used to control flow of petroleum, chemical, and aircraft hydraulics where low leakage rates and activation at low pressures are required.
Gonzalez, R.↗
Evaluation test program, valve, explosive actuated, normally closed Pyronetics model 1400
Evaluation tests of the explosive actuated normally closed valves used to control and isolate hydrazine flow in the TOPS spacecraft, are presented. The malfunctions, modifications, service life, and reliability of the valve are also outlined.
Avalos, E.↗
Valve, normally closed, titanium Pyronetics model 1426
Performance tests of the explosive actuated, normally closed titanium valve 1426, are outlined. The valves are used to control hydrazine flow in a monopropellant thruster. Data cover pressure tests, internal and external leakage tests, flow control tests, and actuator tests. No failures were noted in any of the tests.
Avalos, E.↗