... material:Isolation diaphragm:316 stainless steel, Monel, Hastelloy C alloy and tantalum;Exhaust / drain valve:316 stainless steel ... and their joints:316 stainless steel, Hastelloy, Monel alloy C"O" ring: fluorine rubber;Non liquid contact material:Liquid: ... steel, galvanized steel;Electrical shell: low copper aluminum alloy;" O" ring: nitrile rubberCoating: polyester and epoxy resin.Pressure connector ...