Pressure valve test method

Pressure valve test methods for example: the pressure valve, including relief valve, Pressure Relief Valve and sequence valve, the paper relief valve as an example to illustrate the pressure valve test items and test methods. Pressure valve test can be carried out on a dedicated test bench, but also in a comprehensive test bench. (1) pressure regulating range and pressure stability test. Adjust the test valve adjustment hand wheel, from full open to fully closed, and then to fully open, from the pressure gauge to see the pressure rise and fall as well as the pressure regulating range. Pressure gauge pointer should be steady rise and fall, pressure regulating range should meet the provisions of the pressure regulating range, the maximum pressure, the pressure pulsation value shall not exceed the specified value. (2) the amount of leakage test. Adjust the hand wheel is adjusted by the valve to the fully closed position, adjust the overflow relief valve to be the highest pressure of the valve under test, and then adjust the test valve adjustment hand wheel, so that the test valve overflow leakage measurement. (3) Unloading pressure test. The remote control port of the relief valve connected to the tank so that the test valve through the test flow, measuring the pressure relief valve inlet and outlet pressure, the difference is the test valve unloading pressure. (4) pressure loss test. Adjust the test valve adjustment hand wheel to completely loosen, and make the test valve through the test flow, pressure gauges measure the pressure of the inlet and outlet ports, the difference is the pressure loss of the valve under test rotor pump. (5) opening and closing characteristics of the test. Close the overflow relief valve, adjust the tested valve to the maximum pressure, adjust the overflow relief valve to depressurize the system gradually, and measure the overflow volume of the tested valve when it drops to the closed pressure of the tested valve. Adjust the overflow relief valve, the test valve does not overflow began to make the system gradually boost pressure, when it rose to the test valve opening pressure, measured by the valve overflow. More Keyword Search: Pressure Valve