Valve selection principle
(1)Safety and reliability. Petrochemical, power station, metallurgy and other industries production requirements for continuous, stable, long-cycle operation. Therefore, t...
1. Clarify the purpose of the valve in the equipment or device
Determine the working conditions of the valve: the nature of the applicable medium, the working pressure, the working temperature and ...
The difference between domestic valves and imported valves is mainly reflected in the following aspects:
1. Materials and processes:
Imported valves: usually selected raw materials, such as sta...
Check valve refers to the valve that automatically opens and closes the valve flap by relying on the flow of the medium itself to prevent the backflow of the medium, also known as check valve, one-...
WCB, a carbon steel casting material conforming to ASTM A216 Grade WCB, undergoes a standardized heat treatment process to achieve the required mechanical properties, dimensional stability, and res...
Valve foundation
1. The basic parameters of the valve are: nominal pressure PN and nominal diameter DN
2. Basic function of the valve: cut off the connected medium, adjust the flow rate, and change...