... corrosive liquid.2.Application 1>water supply: water filter and transport in waterworks, boosting of main pipeline, boosting ... treatment: ultrafiltration system, reverse osmosis system, boiler water supply and condensing system, distillation system, separator, swiming pool 5> irrigation ... 304 stainless steel,316 stainless steel on request.The pump head and suction & discharge can be made of cast iron ...