1. Idantifye kòrèkteman kalite tiyo PPR: tiyo PPR reyèl yo dwe konfòme yo ak estanda ISO / DIS 15874.2-1999.<>< plastic="" piping="" system="" for="" cold="" and="" hot="" water="" -="" ppr="" part="" ii="" pipes=""> >ekipman tiyo yo dwe konfòme yo ak estanda ISO / DIS 15874.2-1999<>< plastic="" piping="" system="" for="" cold="" and="" hot="" water="" -="" ppr="" part="" iii="" pipe="" fittings=""> >; Pèfòmans nan tiyo pseudo PPR ak ekipman pa ka pase estanda ki anwo yo. Li ta dwe remake ke lavi sa a ki sèvis nan tib pseudo PPR se sèlman 1-5 ane, pandan y ap lavi sa a ki sèvis nan tib PPR reyèl se plis pase 50 ane.
2. Peye atansyon sou detèminasyon an jeneral faktè sèvis C (sa vle di faktè sekirite) nan tiyo PPR:
For general occasions, and keep the temperature ＜ 70 degree for a long time, C = 1.25 can be selected; In important occasions, with long-term continuous service temperature Greater than or equal to 70 degree , and it is possible to operate at higher temperature for a long time, optional C = 1.5;
3. Pou sistèm dlo frèt (mwens pase oswa egal a 40 degre), p.n1 chwazi 0 1.6Mpa tiyo ak ekipman;
Pou sistèm dlo cho, chwazi Pi gwo pase oswa egal a tiyo ak ekipman pN2 0mpa.
