BS EN 1277:1996- Plastics piping systems. Thermoplastics piping systems for buried non-pressure applications. Test methods for leaktightness of elastomeric sealing ring type joints
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This standard specifies three basic test methods for determining the leaktightness of elastomeric sealing
ring type joints for buried thermoplastics non-pressure piping systems. It also gives a combined test method
where the three methods are executed successively Unless otherwise specified in the referring standard,
the methods use the following pressures respectively assessing leaktightness.
- Method 1: a low internal hydrostatic pressure for assessing performance.
- Method 2: a higher internal hydrostatic pressure for vacuum).
- Method 3: internal negative air pressure (partial
- Method 4: a combination of the methods 1, 2 and 3.
It also describes three test conditions, as follows:
a) without any additional deformation or distortion;
b) with diametric distortion;
c) with angular deflection; under which the test can be executed.
BS EN 1277:1996- Plastics piping systems. Thermoplastics piping systems for buried non-pressure applications. Test methods for leaktightness of elastomeric sealing ring type joints
