Leadership

Qusestions and Answers

Issue 7 and Volume 109.

Qusestions and Answers DEPARTMENTS wherein are answered questions relating to current problems in the fire protection Testing Water Mains To the Editor: We have 1300 feet of 16-inch pipe which we wish to test at a pressure of 150 to 200 psi. The elevation of one end is 125 feet higher than the other. We intend to connect our pumper at the low end of the pipe. Would it be possible for a 625 Im- perial gpm centrifugal pump to perform this test? If so, how long would it take to fill the pipe? Do you think it would be better to perform the test by air pressure? E. L. M. Answer: Assuming that some form of bleeder valve is used at the upper end of the pipe to allow air to escape as the water enters (to prevent faulty pressure readings) your pumper can perform the test if it…

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