PPR pob li qub tau muab faib ua peb pawg hauv qab no raws li lawv txoj kev sib txuas:
1. Qhov sib npaug ntawm lub pob valve: Ib hom PPR pob valve, yog cov khoom siv PPR yeeb nkab fittings.
2. Internal xov pob valve: Ib kawg yog PPR cov khoom siv interface, thiab lwm qhov kawg yog cov xov xov sab hauv, siv los txuas cov kav hlau los yog lwm yam threaded fittings.
3. Sab nraud xov pob valve: Ib kawg yog PPR cov khoom siv interface, thiab lwm qhov kawg yog cov xov hlau sab nraud; ib hom PPR pob valve.
