The burning of self-reliance type pneumatic control valve performance testing

Self-reliance type pneumatic control valve of combustion performance test 1) In the burning period by the seat of leakage (1) for low pressure test, in the low pressure test combustion period, through the seat leakage should not be over - in table 2 The value of 12. (2) for high voltage test, in the high voltage test combustion period. By the seat of the leakage should not exceed - in table 2 The value of 12. 2) Self-reliance type pneumatic control valve leakage (1) the outside of the burning and cooling period for low pressure test, in the low pressure test combustion period and cooling period, average external leakage, not including leak through the seat should not exceed - in table 2 The value of 12. (2) for high pressure test, in high pressure test combustion period and cooling period, average external leakage, not including leak through the seat should not exceed - in table 2 The value of 12. 3) Cooling through the seat leakage after low pressure test by the seat of the maximum leakage should not exceed - in table 2 12 and values. 4) Self-reliance type pneumatic control valve operability fire tests, closed with a suitable control personnel control valve fully open state under high test pressure, does not use additional wrench or extension rod. 5) After external leakage test valve in full open position of high voltage testing, external leakage should not be an average of more than - in table 2 The value of 12. Note: the external leakage valve and pipe joint leakage