1. PPR quvurlarining sifatini to'g'ri aniqlang: haqiqiy PPR quvurlari ISO / DIS 15874.2-1999 standartiga mos kelishi kerak.<>< plastic="" piping="" system="" for="" cold="" and="" hot="" water="" -="" ppr="" part="" ii="" pipes=""> >quvur qismlari ISO / DIS 15874.2-1999 standartiga mos kelishi kerak.<>< plastic="" piping="" system="" for="" cold="" and="" hot="" water="" -="" ppr="" part="" iii="" pipe="" fittings=""> >; Pseudo PPR quvurlari va armaturalarining ishlashi yuqoridagi standartlardan o'ta olmaydi. Shuni ta'kidlash kerakki, psevdo PPR quvurlarining xizmat qilish muddati atigi 1-5 yil, haqiqiy PPR quvurlarining xizmat qilish muddati esa 50 yildan ortiq.
2. PPR quvurining umumiy xizmat ko'rsatish omili C (ya'ni xavfsizlik omili) ni aniqlashga e'tibor bering:
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. Sovuq suv (40 darajadan kam yoki teng) tizimi uchun p.n1 0 1,6Mpa quvurlar va armatura tanlanadi;
Issiq suv tizimi uchun pN2 0mpa quvurlar va armaturadan kattaroq yoki unga teng ni tanlang.
