... ABS, above 36″adopt FRP linner4) opening: 2.5“whorl, 4“whorl mouth, 6″flangeDetails1) opening temperature: ... inner container: ABS \ FRP \ PE6) opening diameter: 2.5’’thread – 6’’ flangeColor: Different colors are available, deep blue ... tank, Stainless steel tank, water softener, household water purifier, industrial water filter, RO and UF membrane housing, RO system, Accessories(valve, distributor, ...