Inox press fittings Size:1''-4''inch,water gas system Standard:DVGW,JWWA grade:AISI316L,304L Gasket:EPDM,HNBR, ... cold and hot water supply, heating supply, fire protection, medicinal gas, industrial petroleum pipeline system etc.Standard:Press fitting standard: GB ... rubber O ring),-- Suit medium: cold water, hot water, compressed air, gas, oil etcSizes range:The norminal diameters are: DN15, 20, 25 ...