For someone who don’t know test requirements for Valve Testing Machine, we’d like to introduce some useful tips for you. If you are now confused about this, you can follow the below points.

　　1. Each valve should be tested its’ pressure before leaving the factory.

　　2. It is not allowed to paint the valve or use other leak-preventing coatings before the shell test is completed, but it is allowed to perform chemical anti-rust treatment. For lacquered valves, if the user representative requires a redo pressure test, the coating does not need to be removed.

　　3. Before the seal test, the oil stain on the sealing surface should be removed, but it is allowed to apply a thin layer of viscosity no more than protective agent. The grease-sealed valve allows the application of the grease selected according to the design specifications.

　　4. During the test, the valve should not be allowed to receive foreign influences that may affect the test results.

　　5. Unless otherwise specified, the temperature of the test medium should be between 5 and 40 °C.

　　6. The test medium is selected by the manufacturer.

　　7. When testing with liquid, the gas in the valve chamber should be excluded. When using gas for testing, safety precautions should be taken.

　　8. When performing the sealing and upper sealing test, it should be closed in the way given by design.

　　9. Test pressure should meet the requirements

　　If you have any other questions, please don’t hesitate to ask for our help, who is a professional Valve Test Bench Supplier.