... " 2) standard: BS, ANSI, DIN, JIS 3) with socket and threaded end 4) material: U-PVC 5) colors: Many colors ... available for choice 6)Health and non-toxic 7) Heat, corrosion resistance without fouling 8) ... vibration and no noise 4)Quality : Heat ,durableApplication: Applies to swimming pool ,wastewater treatment ,agriculture ,irrigation, industrial application low price ball ...