... l/min 3.Power 2 to 2.5 Hp Stainless Steel Pump, centrifugal pumps, water pump, 2WB Operating ... B, Protection IP54,Continuous duty. 2WB (Twin impeller) series stainless steel centrifugal pumps, produced by advanced stamping and welding technology, ... Materials:Pump casing, back-cover, impeller and pump shaft: Stainless Steel SUS304 & SUS316LBracket and Motor casing: Aluminum AlloyStandard mechanical Seal ...