A compact vacuum gate valve capable of reducing a kink and sliding between a seal material and a seal surface, achieving a low occurrence of particles, stably and reliably performing valve-body open-close movements, restricting impulsive sound and vibrations, and also having high durability. The vacuum gate valve includes housing bodies, a valve-body open/close driving body, and a stem provided with a valve body. Each of the housing bodies has therein a piston rod and a cam member with a cam groove. On each side of the valve-body open/close driving body, a cam roller and a fulcrum roller are provided. On an inner side of the housing body, a vertical movement guiding part and a stopper part are provided. A spring for causing the valve-body open/close driving body to ascend is provided between the valve-body open/close driving body and a fixed base part on a fixed side.

A silencing choke for a solenoid valve can include a base and a stem configured to be coupled to an armature and can be configured for at least partially reducing or eliminating noise caused by armature bounce. A choke can be configured for limiting maximum flow through an orifice during at least a portion of a valve transition, which can include creating a state of orifice limited flow during the occurrence of armature bounce. A choke can be configured for at least partially reducing cross flow among ports and for limiting a maximum flow rate through at least one flow path of a valve.

The disclosure relates to a valve assembly, comprising a valve body, in which a fluid channel is formed that connects a fluid inlet to a fluid outlet, wherein a preload force is applied to a closing body, which is movably mounted in the fluid channel, in the direction of a valve seat formed in the valve body, a fluid force acting on the closing body against the preload force in order to open the valve seat. The closing body is guided axially and/or radially by at least one guide ball, the guide ball being arranged between the closing body and a lateral boundary of the fluid channel.

A relief valve includes: a housing; a plunger movable to each of a closed position and an open position; a differential pressure chamber; a spring member; a piston; and a damping chamber. The plunger includes a first damping passage penetrating the plunger and bringing an area outside the plunger and a through passage into communication. The piston includes a second damping passage penetrating the piston and bringing an area inside the piston and the damping chamber into communication. A communication space connected to each of the first damping passage and the second damping passage is formed between the plunger and the piston.

Methods, apparatus, systems and articles of manufacture are disclosed for valve body apparatus for use with fluid valves. An example fluid valve apparatus includes a valve body including a housing positioned on an exterior surface of the valve body, a calibration set screw disposed in the housing via a recessed aperture, and a cover coupled to the housing to seal the calibration set screw from external access.

A valve assembly with a valve body, which has a fluid passage designed as a fluid inlet and at least one fluid passage designed as a fluid outlet, is disclosed. A fluid chamber connecting the fluid inlet to the at least one fluid outlet is formed in the valve body. A movably mounted closing body is positioned in the fluid chamber. The closing body is guided axially and/or radially by at least one guide ball. The at least one guide ball is arranged between the closing body and a lateral delimitation of the fluid chamber. A fluid passage is formed in the radial direction of the valve body.

A fuel valve device and a method of controlling fuel flow between a fuel tank and an engine are disclosed. A fuel valve comprises an inlet conduit including an inlet end connectable to a fuel tank and a central axis, an outlet conduit including an outlet end opposite the inlet end connectable to an engine. The outlet conduit has a central axis offset from the inlet conduit central axis. A movable valve ball is configured to block fuel flow from the inlet end to the outlet end at a predetermined pressure and to permit the fuel flow from the inlet end to the outlet end when pressure in the fuel valve device exceeds the predetermined pressure, movable along a travel axis defining an angle with the inlet conduit central axis that is greater than 5 degrees and less than 90 degrees.

A surge relief angle valve (SRA) is disclosed. The surge relief angle valve is held normally-closed by one or more compression spring(s). In certain embodiments the surge relief angle valve includes a body containing a disc and disc seat; a piston and shaft, the piston and shaft in communication with the disc and disc seat; and a spring providing a force against the piston; wherein the spring is enclosed within a housing and wherein the surge relief valve has a closed self-contained hydraulic system containing the piston and shaft, and providing a dampening force against the spring force.

The present invention is to provide a vehicle-mounted apparatus having a biasing structure using a coil spring capable of reducing a lateral force of a coil spring that is applied to a biasing target member. When N1, n1, N0, and n0 represent the number of effective turns when the relief valve spring 37 is set in a valve hole 34 of a spool 29 in a compressed state, a value of an integer of N1, the number of effective turns when a length of the relief valve spring 37 is a natural length, and a value of an integer of N0, respectively, the spring 37 satisfies an equation 1: 0≤N1−n1≤0.25 or an equation 2: 0.75≤N1−n1<1.

A relief valve device having a spring, a valve bonnet, a valve stem, a disc holder, a valve disc, a huddling chamber, a blowdown ring, and a nozzle. In the valve device, the valve disc is positioned above the nozzle; the spring is disposed in the valve bonnet; the spring surrounds the valve stem such that a longitudinal axis of the spring and a longitudinal axis of the valve stem are coaxial; the disc holder surrounds an outer periphery of the valve disc and is adjacent and in direct contact with a surface of the valve disc around an entire perimeter of the valve disc; the blowdown ring is disposed at a top section of the nozzle; a bottom section of the nozzle is connected to a bottom surface of a valve body and the top section of the nozzle is connected to the valve disc; and the disc holder is filled with oil.