Low temperature gate valve is a opening and closing part of the gate plate, the direction of motion of the gate plate is perpendicular to the direction of the fluid, the gate valve can only be fully opened and fully closed, can not be adjusted and throttled. Gate valves are sealed by the contact between the seat and the gate plate. Usually, the sealing surface will be surfacing with metal materials to increase the wear resistance, such as surfacing 1Cr13, STL, stainless steel, etc. There are rigid gate and elastic gate, according to the different gate, gate valve is divided into rigid gate valve and elastic gate valve. Suitable for methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen and other low temperature media.

Product characteristics

1, small flow resistance. The medium channel inside the valve body is straight through, the medium flows in a straight line, and the flow resistance is small.

2, less effort when opening and closing. It is compared with the globe valve, because whether it is open or closed, the direction of the ram movement is perpendicular to the direction of the medium flow.

3, the height is large, the opening and closing time is long, the opening and closing stroke of the gate is large, and the lifting is carried out by the screw.

4, water hammer phenomenon is not easy to produce.

5. In order to prevent abnormal pressure increase in the middle cavity, pressure relief holes are provided on the inlet side of the ram.

6, according to the working temperature of the valve to determine the top length of the valve cover, to ensure the reliable sealing of the valve stem packing.

8, according to the working temperature reasonable selection of filler, gasket and other parts of the material.

9, simple shape, short structure length, good manufacturing process, wide range of application.

10, the channel is smooth, the flow resistance number is small, the sealing surface is made of stainless steel and carbide, the service life is long, the sealing is reliable, the operation is light and flexible.