Flying Wolf gate valves under the condition of high pressure test

Flying Wolf gate valves under the condition of high pressure test 1) According to the following method to determine pressure and high pressure test; (1) for the nominal pressure ( PN) 2 - level of the test valve, according to the table The provisions of the eight. (2) for the other test gate, for its 20 degrees; 75% of the maximum allowable working pressure. - 2) adjust the system pressure to table 2 8 rules of stress, in the high voltage test, including fire and cooling stage are keeping the pressure value. Allowing once its maximum instantaneous pressure loss 50% of test pressure, but should be resumed within 2 minI test pressure. 3) record level meter 5 readings, measuring 20 empty the water in the container. 4) open the fuel valve 21, ignition. 5 > is 30 min after ignition of fire period, during which temperature should be monitored fire area, the average temperature of the two thermocouple 14 in 2 minutes at 760 degrees, the average temperature in fire period for the rest of the should be in 760 ~ 980 degrees, and both the thermocouple readings shall be not less than 705 degrees. 6) Which requires an average temperature of the thermocouple temperature measuring block 13 within 15 min after ignition reached 650 degrees, in the burning issue for the rest of the average temperature shall not be lower than the temperature, and temperature measuring thermocouple in each reading is not less than 565 degrees.