... 4.application:agricultural irrigation etc. "ZOOR" New handle PVC ball valve (plastic ball valve, ball valve, PVC valve, check valve, water valve) description ... end after the factory, Lowest leakage rate.6)Quality: Heat, high temperature, extremely long usage life for at least 10 yearsApplication ... , industrialapplications, etc. to the drainage system. 1/2-4 plastic ball valve