... ∼32125100200∼400100∼20012.5∼125150125250∼40020020∼50200150250∼40040020∼50 Titanium valve, nickel valve TypeNominal diameterworking pressure (MPa)J41W stop valveDN15-DN3001.0 ... ,2.5,4.0,6.4,10.0Q41W,Q71F,Q341W ball valveDN15-DN3001.0,1.6,2.5,4.0,6 ... -DN3001.0,1.6,2.5,4.0,6.4H41W Check valveDN15-DN3001.0,1.6,2.5,4.0,6 ...