* Select pipe segments to try pressureAll piping must be pressure test before the trials. The selection of test pressure of each pipe segment is important, it depends on the length of the pipe segment would like to try, the position of the exhaust valve, quail con type, the water supply to try to pressure ... Location of the valve and the valve hole is what factors need to be considered in full. Van and the pit can be used as the last point of the test piece
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