Excessive pressure test (DVGW W 534)
The purpose of this test is to determine the resistance of a pipe connection to reduced internal pressure (vacuum).
A test specimen consisting of pipes and fittings is tested. The test parameters are: 20 °C/-0,8 bar/³1 h. During the test the negative pressure must not change by more than 0.05 bar.
The test concerns pipes and fittings of metal.