A flow control valve apparatus switches a circulation direction of cooling medium according to a rotated position of a valve, and a disc provided in the valve controls the flow rate of the cooling medium flowing through a plurality of flow paths, so that the flow rate control of the cooling medium is diversified according to various conditions to improve cooling performance by efficiently circulating the cooling medium.

The disclosure provides a control valve which includes a valve body and a valve gate. The valve gate is movably located inside the inner space. The control valve has a lower flow rate limit which is greater than zero. That is, the lower flow rate limit has no necessary to be zero, thus it is acceptable to have a cylindrical valve gate but not a spherical valve gate. Therefore, the valve gate can be directly installed into the valve body via the opening, which allows the valve body to be made of a single piece so as to simplify the processes of manufacturing and assembly.

The disclosure provides a control valve which includes a valve body and a valve gate. The valve gate is movably located inside the inner space. The control valve has a lower flow rate limit which is greater than zero. That is, the lower flow rate limit has no necessary to be zero, thus it is acceptable to have a cylindrical valve gate but not a spherical valve gate. Therefore, the valve gate can be directly installed into the valve body via the opening, which allows the valve body to be made of a single piece so as to simplify the processes of manufacturing and assembly.

Disclosed is a pressure regulator, comprising: a first cylindrical chamber; a second cylindrical chamber located concentrically within the first cylindrical chamber and in thermal communication with the first cylindrical chamber; and further comprising at least one of: an internal valve, wherein the internal valve is connected at a first end to the first cylindrical chamber and at a second end to the second cylindrical chamber, wherein the internal valve allows the flow of gas from the second cylindrical chamber to the first cylindrical chamber; and an external gas chamber and an external valve, wherein the external gas chamber is located outside the first cylindrical chamber, wherein the external valve is connected at a first end to the first cylindrical chamber and at a second end to the external gas chamber, wherein the external valve allows the flow of gas from the external gas chamber to the first cylindrical chamber.

A valve seat is provided herein. The valve seat may include a ceramic valve seat insert positioned within a metal valve seat housing and comprising an indentation corresponding to a retention lip of the metal valve seat housing and a compliant sleeve positioned coaxially around at least a portion of an outer surface of the ceramic valve seat insert.

A gas valve for a cooking appliance is provided and includes a valve housing defining a valve chamber therein. A plug is disposed within the valve chamber. A valve stem interacts with the plug such that rotation of the valve stem correspondingly rotates the plug to selectively permit a flow of gas through the gas valve. The valve stem is axially translatable between a locked position wherein rotation thereof is inhibited and an unlocked position wherein rotation thereof is permitted. A first spring exerts a compressive force against the valve stem, toward the plug, to bias the valve stem into the locked position. A second spring exerts a compressive force against the plug in order to seat the plug within the valve chamber regardless whether the valve stem is in the locked or the unlocked position.

The disclosure provides a control valve which includes a valve body having an inner space and a valve gate. The valve gate is movably located inside the inner space of the valve body and the valve gate has at least one main channel having two valve ports opposite to each other, and each of the valve ports of the main channel has a plurality of circular holes and a curved hole, where the circular holes are arranged in a line and the curved hole is connected to one of the circular holes that is located at an end of the line. The control valve has a lower flow rate limit which is greater than zero.

The disclosure provides a control valve which includes a valve body having an inner space and a valve gate. The valve gate is movably located inside the inner space of the valve body and the valve gate has at least one main channel having two valve ports opposite to each other, and each of the valve ports of the main channel has a plurality of circular holes and a curved hole, where the circular holes are arranged in a line and the curved hole is connected to one of the circular holes that is located at an end of the line. The control valve has a lower flow rate limit which is greater than zero.

Rotary valves are adapted to replace traditional slide valves in fluid catalytic cracking units (FCCUs) such as regenerated catalyst valves, spent catalyst valves, cooled catalyst valves, and recirculation catalyst valves. The rotary valves as discussed herein are significantly more compact than a slide valve having a similar flow capacity. The rotary valve is better adapted to provide flow control or throttling than slide valves are. Flow control or throttling occurs with greater response and precision in response to control inputs and rotation. In addition to the size reduction achieved with the rotary valve, the required controls and/or hydraulic fluid necessary to achieve flow changes are significantly reduced, further saving costs for the valve, as hydraulic power units are not required. The omission of a hydraulic power unit also reduces the size of the valve and/or its accompanying structures within the FCCU.

Rotary valves are adapted to replace traditional slide valves in fluid catalytic cracking units (FCCUs) such as regenerated catalyst valves, spent catalyst valves, cooled catalyst valves, and recirculation catalyst valves. The rotary valves as discussed herein are significantly more compact than a slide valve having a similar flow capacity. The rotary valve is better adapted to provide flow control or throttling than slide valves are. Flow control or throttling occurs with greater response and precision in response to control inputs and rotation. In addition to the size reduction achieved with the rotary valve, the required controls and/or hydraulic fluid necessary to achieve flow changes are significantly reduced, further saving costs for the valve, as hydraulic power units are not required. The omission of a hydraulic power unit also reduces the size of the valve and/or its accompanying structures within the FCCU.