Empumelelweni obalulekile embonini yamapayipi, kwembulwe i-valve yebhola lepulasitiki PPR. Lokhu okusha kuthembisa ukuguqula izinhlelo zokulawula ukugeleza kwamanzi, ukuhlinzeka ngesixazululo esisebenza kahle futhi esihlala isikhathi sokusebenza kokuhlala nokuhweba. Kufakwe ama-polymers athuthukile, i-plastiki PPR ball valve inokumelana okuhlukile nokugqwala, amakhemikhali, ne-hig