① The pressure reducing valve is generally assembled after shell pressure testing, and it can also be tested after assembly. Shell test duration: 1min for DN<50mm; more than 2min for DN65～150mm;...
Ball valve Advantages and Disadvantages It evolved from a plug valve. Its opening and closing part is a ball. The ball is rotated 90 ° around the axis of the valve stem to achieve the purpose of op...
① The strength test of the safety valve is the same as other valves. It is tested with water. When testing the lower part of the valve body, the pressure is introduced from the inlet and the sealin...
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