ČSN EN ISO 13259   (646459) Potrubní systémy z termoplastů pro beztlakové aplikace uložené v zemi - Stanovení těsnosti spojů s elastomerním těsnicím kroužkem

Anotace textu normy ČSN EN ISO 13259   (646459)

This document specifies a test method 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 tests are carried out at the following basic test pressures:

- p1: internal negative air pressure (partial vacuum),

- p2: a low internal hydrostatic pressure,

- p3: a higher internal hydrostatic pressure.

It also describes the following four test conditions under which the tests are performed:

a) Condition A: without any additional diametric or angular deflection,

b) Condition B: with diametric deflection,

c) Condition C: with angular deflection,

d) Condition D: with simultaneous angular and diametric deflection.

The applicable selection of the test pressure(s) and the test condition(s) is specified in the referring standard.