DZ41H type low temperature steel gate valve

One. Structure and characteristics

1. In order to prevent abnormal pressure rise in the middle cavity, a pressure relief hole is set on the inlet side of the gate.

2. Determine the top length of the valve cover according to the working temperature of the valve to ensure reliable sealing of the valve stem packing.

3. According to the working temperature, choose the materials of packing, gasket and other parts reasonably.

4. Strictly control the chemical composition of the material and mechanical properties such as low-temperature impact toughness.

5. Using a variety of piping flange standards and sealing surface types, suitable for various engineering needs.

2. Implementation standards