EN 1277:2003

Foreword
1 Scope
2 Principle
3 Apparatus
4 Test pieces
5 Test temperature
6 Procedure
7 Test report
Annex A (normative) Modification of test parameters

This European standard specifies three basic test pressures for determining the leaktightness of elastomeric sealing ring type joints for buried thermoplastics non-pressure piping systems.Unless otherwise specified in the referring standard, the methods pressures used are the following:-p1: internal negative air pressure (partial vacuum);-p2: a low internal hydrostatic pressure;-p3: a higher internal hydrostatic pressure.It also describes four test conditions under which the test can be executed, as follows:A:without any additional diametric or angular deflection;B:with diametric deflection;C:with angular deflection;D:with simultaneous angular and diametric deflection.These conditions can be applied individually or in combination. The applicable selection of the method(s) and the condition(s) should be specified in the referring standard.