Check the pneumatic valve quality detection method

check pneumatic valve in a large number of work at the same time, its product quality is very important. To check the normal operation of pneumatic valve is work for guarantee, if you can in your spare time through a variety of testing methods to quality inspection check pneumatic valve, in order to achieve the purpose of safety work. Then check how pneumatic valve testing?
we usually put the most simple to test check method of pneumatic valve is divided into three steps:
a pneumatic valve, open the check channel of water ( Or kerosene) Full of pneumatic valve cavity, pressure and pressure to the strength test requirements, check the pneumatic valve, pneumatic valve cap, gasket, packing with and without leakage.
2, pneumatic valve closing, at the side of the check pneumatic valve pressure to the nominal pressure, on the other side to check with and without leakage.
3, the check pneumatic valve upside down, test the opposite side. Through the above three simple steps to analysis the check whether basic working state of the pneumatic valve abnormalities.
of course, more complicated inspection method, the following points out that the method is in view of the potential problems more complex, the basic steps can be divided into two steps:
one, check the pneumatic valve testing pressure from nominal pressure. Mpa - Mpa, the commonly used pressure pneumatic valve, pneumatic valve strength test pressure for the nominal pressure. Times. Pneumatic valve seal test pressure, equal to the nominal pressure. Times.
2, check the pneumatic valve test-bed is usually a pressure parts above, the following have a pipe connected with hydraulic test pump. The pneumatic valve after compaction, hydraulic test pump work, from the hydraulic test pump pressure gauge, can read Numbers of pneumatic valve under pressure. Pressure water filling, electric pneumatic valve, pneumatic valve to air in a net. Testing the upper pressure plate, a vent, with a small pneumatic valves open and close. Air net logo is, vent out all of them are in the water. After close the vent, began to step up. Booster process slowly, not sharp. After reaching specified pressure, keep minutes, pressure is not qualified.