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Before the valve is installed, compressive strength test should be done. Test batch (with specifications, with the same brand, the same model) the number of spot checks 10%, and not less than 1, if there is leakage, cracking unqualified 20% of the spot checks, there are still unqualified test or by test All return processing. For installed in the trunk off the role of the closed-circuit valves, one by one to do the intensity and tightness test. Strength and tightness The test pressure should meet the design requirements and factory regulations. The valve after the test is permitted to install in the project. Valve installation should ensure that the location, import and export of the right direction, the connection is solid, close, the valve open flexible, towards a reasonable. After the installation is completed, make sure the valve is clean and the missing paint area should be replenished completely.
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