Valve Specification Requirements
- Dec 03, 2018 -

1, valve a certain specification batch manufacturing, should be entrusted to the official body to carry out the following performance testing:

① valve under the condition of pressure opening and closing torque,

② valve in the pipeline water transmission condition of the flow resistance coefficient detection. 

2, the valve in the factory before the following testing: 

① valve in the opening condition, the valve body should bear the valve pressure value of twice times the internal pressure detection;

② valve in the closed condition, the two sides bear 11 times times the valve pressure value, no leakage; but metal sealed butterfly valve, leakage value is not greater than the relevant requirements.