To solve the valves in use recurring problems, strict quality control valve into the pipe network, Shenzhen Water Division was established on September 96 valve test run more than four years, a total of 781 units to detect valves, valve testing centers operate very efficiently curb the inflow of poor quality valve pipe network, so that the status of the valve in the pipe network quality has improved significantly than before. Valve testing stations have done a lot of work.

1, Strengthen ties and cooperation with the manufacturers now use the valve, the valve is detected through technical training personnel to fully understand and master the use of the valve material, structure, process. Establish a sound detection equipment, testing personnel skilled professional testing team.

2, To enhance detection of the content of the valve

① Visual inspection. Valve surface should be free of defects and cracks, no body burst phenomenon;

② Valve leak test. In case the valve is closed, the test pressure at 1.1MPa no leakage, no pressure drop gauge. Required on both sides of the valve turns pressure were measured, and the opening and closing times to achieve the same effect;

③ Operational flexibility of the valve. In the case of a single person on the valve opening and closing times, and still flexible and lightweight.

3, Valve testing by more than four years of work, we found that 20% of the test failed to detect the amount of roughly valves, greatly eliminate substandard valves used in the pipe network.

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