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Ball valves voltage withstand test operation

Edit: Vatac Vango Valves (Wenzhou) Corp      Date:Mar 20, 2015

5.2.1 testing requirements test for voltage withstanding test medium can be water, the temperature should be between-40℃. ball valve test fire should not be affected by forces that could affect test results. the test pressure should gradually increase the minimum test pressure values, keeping the pressure constant in test duration. test, fire ball valve air inside the cavity should be excluded. test precision pressure gauges or pressure indicator does not lower than level 1, range was about 1.6 times times the test pressure. shell prior to pressure testing, fire ball valve external surface shall not be painted or coated surface defect of others may hide. Fire ball valve to an already painted inventory, reservations allowed the voltage test for shell coating. leak testing should be carried out after the pressure test of the shell. sealed test, the sealing surfaces should be thoroughly cleaned, no traces of oil, in order to prevent the sealing surface abrasions, kerosene-can be coated with a layer of thin oil film. 5.2.2 pressure test and push the ball part of the shell opened, closed fire-ball valve end of the spectrum, from the other end to the body cavity is filled with water, pressurized to test pressure, then the shell (including stuffing box and valve body and valve are covered and connections) to be checked.

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Vatac Vango Valves (Wenzhou) Corp is one of the best China steam trap, check valve, knife gate valve, flow control valve, trunnion ball valve, stainless steel check valve, electromagnetic flowmeter, metal expansion joint manufacturers and suppliers, as a company, our professional factory can always produce products at both good quality and price.
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