Water pressure test should meet the requirements
(1) The hydrostatic test shall be carried out after the system has been flushed. (2) water pressure test should be per component, the collector as a unit, by group or by loop. (3) water pressure test should be carried out twice, respectively, before the pouring of concrete before the reign of rough rougers and the filling layer after the expiration of the maintenance of the filling tube; the best heating pipe laying before doing a test. (4) the test pressure should be 1.5 times the working pressure, and should not be less than 0.6Mpa. (5) test method: the test pressure, the regulator 1h, observe the pressure drop, if the pressure drop is not greater than 0.05Mpa, that qualified. (6) water pressure test should be used to slow down the manual pump, boost the process to observe and check the presence or absence of leakage. (7) in the case of freezing may test pressure, the pressure test pressure should be completed after the tube of water to dry, but only the air pump is blowing is not clean, it is recommended to use warm cleaning special tools, Each road tube, for drainage, so that the real guarantee of each tube, there will be no drop of water to ensure that no pipe freezing, practice has proved that there are many use of air pressure test.
