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8136547 |
Poppet valve with diverging-converging flow passage and method to reduce total pressure loss
A poppet valve is disclosed that include a valve body, a poppet guide disposed inside the valve body so as to form a flow passage from a flow inlet to a flow outlet of the valve, a poppet shutter...
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8100145 |
LIFD valve assembly
An LIFD valve assembly has a pressure balance device a pressure balance slide of which is urged in the opening direction by a pressure downstream of a metering aperture and in the closing direction...
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RE41861 |
Decoupled check-relief valve
A decouple check-relief valve for use in a hydraulic fluid circuit is provided that has a cylinder guide housing which travels during the check function of the valve. The cylindrical guide housing...
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7640944 |
Valve for prevention of low flow rates through flow meter
A flow responsive valve for a flow metering system comprising a fluid meter having a minimum measuring flow threshold. The valve is shiftable between an open position at flow rates above the...
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7429167 |
Scroll machine having a discharge valve assembly
A discharge valve assembly is provided for preventing reverse rotation of a scroll compressor. The discharge valve assembly includes a cup-shaped valve member slidably engaged with a central post...
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7246635 |
Automatic flow rate control valve
An automatic flow rate control valve, includes a tubular body, defining a flow path between inlet apertures having a gradually variable cross-sectional area and a fluid outlet at one end; a flow...
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7228869 |
Pressure limiting valve
What is disclosed is a a pressure limiting valve comprising a valve body, the axial movement of which is damped by means of a damping device. In accordance with the invention, the damping device...
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6910502 |
Decoupled check-relief valve
A decoupled check-relief valve for use in a hydraulic fluid circuit is provided that has a cylindrical guide housing which travels during the check function of the valve. The cylindrical guide...
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6899113 |
Pressure relief valve
A pressure relief apparatus including a housing, a valve disposed in the housing, the valve having a first shoulder, a retainer disposed between the housing and the valve spool, the retainer having...
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6851443 |
Apparatus and method for preventing resonance in a fuel vapor pressure management apparatus
A device and method for preventing resonance in a fuel vapor pressure management apparatus of a fuel system supplying fuel to an internal combustion engine. The fuel vapor pressure management...
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6848893 |
Compressor check valve
A compressor check valve having a valve bolt and a valve bolt cover for noise reduction and mitigation of impact from a valve bolt on the valve bolt cover. A bolt insertion hole is provided in the...
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6637456 |
Safety valve
The invention concerns a safety valve, in particular for low pressures and aggressive media, with an inlet which ends at the top in a valve seat upon which lies in a sealing manner a weight-loaded...
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6532987 |
Relief valve
A relief valve having a cylindrical case with one side thereof communicated with a fluid-pressure source, a relief piston accommodated in the cylindrical case and slidable therein, a return spring...
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6532989 |
Hydraulic distributor
A hydraulic distributor that has a regulating balance including a housing hollowed in the distributor body and containing coaxially a fixed central core. A tubular plunger is interposed sliding...
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6470909 |
Hydraulic system
A hydraulic system for a motor vehicle has at least one pressure restricting valve with a housing that has two or more connections. At least one conduit cross-section in the housing can be closed...
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5931191 |
Flow control valve for passing two fluids in opposite directions
A flow control valve includes a piston moveable in a cylindrical chamber between an inlet opening and an outlet opening. The piston head has a maximum diameter smaller than the wall of the chamber...
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5832954 |
Check valve assembly for inhibiting Helmholtz resonance
A check valve assembly is disposed in a flow path of a high pressure hydraulic actuating system between a source of pressurized fluid and a pressure responsive mechanism to limit flow to a single...
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5669356 |
Control valve
A two part pressure unloading delivery valve for a fuel injection pump comprises an annular valve member within which is slidable a plunger. The valve member is biased into engagement with a valve...
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5577533 |
Flexured shaft poppet
In a valve, the valve poppet member is constructed from a spring material where a tubular wall portion has a spiral wall configuration intermediate of a supporting base and a valve head. The spiral...
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5404903 |
Smart vent valve for cargo tanks employed in transporting hazardous commodities
A "smart vent" valve is mounted on a liquid storage tank employed in the transportation of liquid. The valve prevents overpressurization of the tank due to increases in vapor pressure and prevents...
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5230364 |
Pressure relief valve
A proportional pressure release valve comprising a valve body incorporating a valve seat, a valve closure member mounted in the valve body and cooperable with the valve seat to control flow of...
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5224511 |
Spring-loaded safety valve
A spring-loaded safety valve provided with an integrated damping element that achieves a damping effect by the dissipative action of a shearing current and which involves a single-layer or...
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5183075 |
Check valve
Check valve with a movable valve element (3), especially a valve element that is manufactured from a ball, said valve element possessing a spherical surface (7) which faces a valve seat (5) and...
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5161653 |
Electro-rheological shock absorber
An electro-rheological controlled shock absorber for use on motor vehicles is disclosed. The shock absorber employs a fluid filled cylinder, a piston member traveling in the cylinder, and an...
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5158109 |
Electro-rheological valve
A general electro-rheological valve is disclosed used in controlling the flow of fluids in a variety of applications. The valve comprises an inlet in communication with a fluid source, an outlet...
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5129419 |
Pressure control valve
A valve having a valve poppet which is positioned by the opposing forces of a spring and inlet fluid pressure, and a dashpot located out of the path of fluid flow through the valve for damping...
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5048553 |
Relief valve with overturn surge control for storage tank
A tank valve apparatus including a sealed piston assembly for regulating movement of a spring biased poppet, the poppet being in cooperative engagement with the sealed piston assembly and a valve...
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4867603 |
Device for preventing flooding caused by sprinkler failure
A device for protecting irrigation land local flooding caused by damaged sprinklers or broken risers. The device, in accordance with the present invention is designed to be situated within a piping...
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4859155 |
Bypass valve for a displacement pump
A displacement pump bypass valve having an integral pressure modulator in a piston of the valve, the piston located in a bore formed through the pump housing between the pump inlet and pump outlet,...
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4842198 |
Device for damage protection against local flooding caused by sprinkler failure
Irrigation systems which use sprinklers can cause local flooding in the event of either a sprinkler head failure or a broken riser. The result is localized crop damage, irrigation water wastage,...
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4766929 |
Check valve
An improved check valve is disclosed, which prevents the valve disk from slamming against the valve seat when the fluid flow in the line is suddenly reversed. The valve includes a disk and a seat,...
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4756334 |
Check-valve assembly, in particular for a pressurized water reactor
This check-valve assembly, adapted to close a fluid flow circuit without creating overpressures or hammering in this circuit, comprises a tubular body (1) connected at both of its ends to a...
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4489752 |
Guard guided multiple element flow configured poppet valve
A multi-element poppet valve for use with high pressure gas compressors wherein the over-hang of the poppet element head has been substantially eliminated to strengthen the poppet element. The stem...
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4386627 |
Accumulator high flow valve
The valve of the pressure vessel has a head portion adapted to close the liquid orifice and a stem portion mounted slidably in a guide and defining therewith a variable-volume liquid chamber. A...
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4361280 |
Fluid distribution system and pressure equalizer-valves useful therein
A fluid distribution system is described including a plurality of utilization devices, such as water sprinklers or drippers, supplied with pressurized fluid, characterized in that the inlet...
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4315524 |
Damping device for check valves
Damping device for a check valve in a pipeline traversible by a liquid, the check valve having a closure member movable by flow of the liquid into a position wherein it lies on a valve seat in the...
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4257453 |
Peep valve with improved vibration damping
An expiration valve composed of a valve housing presenting an inlet arranged to be connected to the expiratory outlet of ventilating apparatus, and an outlet, a valve seat disposed within the...
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4228820 |
Seat guided poppet valve having flow and dampening control means
A seat guided poppet valve for fluid compressors and the like having improved flow directing characteristics provided by a poppet element having integral flutes surrounded by a shroud and variable...
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4161996 |
Exhaust muffler
An exhaust muffler intended for noise dampening of, for instance, pneumatic tools, comprising a variable flow restricting passage, an attenuation chamber and a non-variable flow restricting...
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4080987 |
Hydraulic safety valve
A hydraulic safety valve is disclosed which is operative to automatically block a liquid fluid path upon the loss of fluid pressure and to maintain the fluid path in a blocked condition until...
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4018248 |
Valve
A valve is disclosed, which provides its principal utility in oil field pumping operations, having a valve body with an interior quiet chamber. Ports are provided beneath the chamber, shown as...
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3850405 |
CONTAMINANT RESISTANT VALVE
A contaminant resistant valve has a valve element mounted in a cavity in generally spaced relationship to the wall of the cavity. The valve element has a recess which receives a fixedly mounted...
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3816040 |
AIR STARTER AND LUBRICATOR THROTTLE VALVE THEREFOR
There is disclosed an air starter having an air motor with an inlet valve which throttles the initial pressure build-up downstream of the valve to reduce the initial shock imposed on the starter...
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3789873 |
PNEUMATIC PRESSURE TRANSMITTING DEVICE
A pneumatic pressure transmitting device for transmitting a pneumatic pressure which is in linear relation to a variable applied force, of the kind comprising a pneumatic pressure chamber having an...
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3680587 |
CONTROL VALVE MEMBER HAVING VIBRATION DAMPING
A valve member is spring-biased to close an orifice between an inlet port and an outlet port and is shifted to meter fluid through the orifice by inlet pressure great enough to overcome the spring...
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3605802 |
CHECK VALVE
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3554611 |
HYDRAULIC BRAKE PRESSURE CONTROL ASSEMBLY
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3361158 |
High pressure one-way fluid valve mechanism for high speed hydraulic piston pump
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3280840 |
Compressor discharge valve assembly with air spring
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3265060 |
Expiration regulators
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