>Is it true that vent and drain are needed at every high and low point of
>piping if water is used for hydrotest?
Without the vent you leave air in the system; without the drain you leave
water in. Not many people use steam for a hydrotest, but if you perform a
pneumatic test (rather dangerous) there's no water to deal with, so you
don't need vents or drains.
Christopher Wright P.E. |"They couldn't hit an elephant at chrisw@skypoint.com | this distance" (last words of Gen. ___________________________| John Sedgwick, Spotsylvania 1864)http://www.skypoint.com/~chrisw Received on Wed Nov 13 19:23:00 2002
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