


Post Requirements

Post Requirements
Product information
Basic parameters Diameter: DN15 ~800mm Pressure: PN1.6~2.5Mpa Material: stainless steel Standard: : JB/T 7749-95 Connection method: flange
The low-temperature gate valve is a shutter of a shutter. The movement direction of the shutter is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate. Usually, the sealing surface is welded with metal materials to increase wear resistance, such as 1Cr13, STL, stainless steel, etc. There are rigid and elastic gates. According to the different gates, gate valves are divided into rigid gate valves and elastic gate valves. Suitable for low-temperature media such as methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, and liquid hydrogen.
product features
1. Small flow resistance. The medium channel inside the valve body is straight, and the medium flows in a straight line with small flow resistance.
2. It is more labor-saving when opening and closing. Compared with a stop valve, whether it is opened or closed, the movement direction of the shutter is perpendicular to the direction of media 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 through the screw.
4. Water hammer is not easy to occur.
5. In order to prevent abnormal pressure rise in the middle chamber, a pressure relief hole is provided on the inlet side of the gate.
6. Determine the top length of the valve cover according to the operating temperature of the valve to ensure reliable sealing of the valve stem packing.
8. Reasonably select materials for fillers, gaskets and other parts according to the working temperature.
9. Simple shape, short structure length, good manufacturing craftsmanship and wide application range.
10. The channel is smooth and the flow resistance is small. The sealing surface is made of stainless steel and cemented carbide. It has long service life, reliable sealing, and light and flexible operation.





















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