Bestank pressure tank have from 2 Lt to 10.000 Lt tanks the operation pressure have 8bar 10bar 16ar 25bar. At present,we have ... standards) and 2L-5000L membranes(Natural Rubber, EPDM, Butyl etc.) for pressure and expansion tanks. Our brand Best Membrane conform to ROHS ... .Carbon Steel ,Stainless steel, Europe standard,working for high quality pump and heat water systemmodel:2L 5L 8L 19L 24L 36L 50L ...