... , no rust, no posion and can work under poor environment. HQS Stainless steel filter housing:Material: 304L/316L body, stainless steel ... : 300 psiWorking tempreature:99 degrees centigrateInlet/outlet: 1/2, 3/4,1 inchFilter Cartridge: 5-40 inches double open end cartridge ... installation, easy maintenance, against high temperature and pressure, long lasting HQS 5C Stainless steel filter housing