A gas grill is disclosed having a gas control valve with a push to sear feature. The gas control valve has a housing with a valve core rotatably disposed within the housing. A sear valve is disposed within the valve core. A user rotates the valve core within the housing to selectively align a gas inlet port with a inlet passage and to align a sear gas port a the sear gas flow passage. The sear valve has a sear valve element which is selectively movable relative to the valve core to selectively pass a sear gas through a sear gas port and a sear flow passage to the forward end of the valve housing, and then to the grill. A bias member, preferably a coil spring, is mounted between the sear valve element and the valve core for urging the sear valve element to a closed position.

An improved stopcock valve, including a valve body, the valve body having at least one inlet port and at least one outlet port, the valve body having an internal cavity in communication with the at least one inlet port and the at least one outlet port and, a rotatable interference body having a through-bore therein, the rotatable body having an external surface, the through-bore having a first opening to the surface and a second opening to the surface, the interference body positioned within the internal cavity of the valve body, the external surface including a first tapered groove in communication with the first opening and a second tapered groove in communication with the second opening, the grooves arranged to be in communication with the at least one inlet port and the at least one outlet port upon rotation of the body.

An isolation valve includes a dead chamber, including a body with a fluid-passing conduit, a device for obturating the fluid passage in the conduit, which may be actuated between a fluid-passing position and a position for obturating the fluid passage in the conduit. In its obturation position, the obturation device forms a dead chamber. A wall of the obturation device comprises a through-hole, in which is positioned a device for decompression of the dead chamber. A hydrocarbon transport facility includes at least two pipes connected through such an isolation valve with a dead chamber.

In order to flush away local bleeding during surgery with a medical instrument, the instruments are commonly provided with a flushing device. In order to be able to control an inflow and outflow of a flushing liquid, the instruments have a stopcock. In order to achieve the sealing action of the stopcock, the plugs of the stopcock have to be formed with a very high degree of precision. The known production processes for such plugs are very cumbersome and cost-intensive. This provides a plug for a stopcock and a stopcock and a method for producing a plug, by way of which the stated problem is eliminated. This is achieved in that a plug, with a grip part and a cone part, is formed in one part and can be produced in a single process step.

A barrel valve assembly for a fluid distribution manifold. A barrel valve body has an off-axis passage with substantially linear walls therethrough, allowing for a substantially linear relationship between fluid flow through the body and angular rotation of the barrel valve within the manifold. The barrel valve thus requires a smaller working environment for the valve assembly, providing benefits in terms of assembly size and weight.

A rotary valve for enhancing aerodynamic stability, including a stator, a rotor, a valve core, a rotating assembly and an elastic pressing assembly. An outer wall of the valve core is provided with at least two curved gas grooves uniformly distributed along a circumferential direction of the valve core. The valve core is fixed to an outer wall of the rotor. The stator is provided with a chamber in an inverted truncated-cone shape. The rotor is coaxially provided within the chamber. The stator is provided with a plurality of gas holes uniformly distributed along a circumferential direction of the stator. A diameter of the gas hole is defined as D. A distance between a first side wall and a second side wall of the gas groove is defined as L. A ratio of L to D is 0.8-1.2.

A valve device comprises a valve, housing, first and second seals. The valve includes a shaft, a rotor connected to the shaft in a first direction, and a first flow path having a first opening. The housing includes a space accommodating the valve, and a second flow path having a second opening in the space. The first seal is between an outer surface of the rotor and an inner surface of the space, and includes a first portion in the first direction and a second portion in a second direction. The second seal is in the second direction, and is between an outer surface of the valve and an inner surface of the space. The valve has a communication path connecting another space with the first flow path, the another space being surrounded by the outer surface of the valve, inner surface of the space, second portion, and second seal.

A process control valve can include a valve body having a fluid inlet, a fluid outlet and a valve seat disposed fluidically between the fluid inlet and the fluid outlet; a valve stem having a longitudinal axis, a first end and a second end longitudinally opposite the first end; and a valve member disposed within the valve body and configured to selectively sealingly engage the valve seat for controlling fluid flow through the valve. The first end of the valve stem can be disposed at least partially within the valve body and can be operably coupled to the valve member for controlling a position of the valve member relative to the valve seat. The valve member can be configured to resist blowout of the valve stem.

A valve device comprises a valve member, a housing, a first seal, and a second seal. The valve member includes a shaft portion rotatable about a rotation axis and a rotor connected to an end of the shaft portion in a first direction along the rotation axis, and, on an outer circumferential surface of the rotor there is a first flow path having a first opening. The housing includes an accommodating portion for accommodating the valve member, and a second flow path having a second opening communicable with the first opening, the accommodating portion having on its inner circumferential surface the second opening. A first seal is disposed between an outer circumferential surface of the rotor and an inner circumferential surface of the accommodating portion. The rotor includes a first region on which a coolant pressure acts in the first direction within the accommodating portion, and a second region on which the coolant pressure acts in a second direction opposite to the first direction, and a first area of the first region is below a second area of the second region.