BS EN ISO 13259:2018

1   Scope 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:

       —   p  1 : internal negative air pressure (partial
                    vacuum); 
   
   
     
       —   p  2 : a low internal hydrostatic pressure; 
   
   
     
       —   p  3 : 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 tes...