Standard: BS, ANSI, DIN, JIS size: 1/2''-4'' structure:ball application:argricultural irrigation and so on Brandzoornamepvc ... ball valvematerialpvc or pprsize1/2"-4"standardANSI,JIS, BS, DINapplication Swimming pool, wastewater treatment, aquaculture ... at the end after the factory, Lowest leakage rate 1/2"-4" pvc ball valve