butterfly valve nominal pressure :1.0 MPa,1.6 MPa strength testing:1.5MPa,2.4MPa Enclose testing:1.1 MPa, 1.8MPa butterfly valvenominal pressure :1.0 MPa,1.6 MPastrength testing:1.5MPa,2.4MPaEnclose testing:1.1 MPa, 1.8MPasuitable temperature :Max 80Niminal diameter :D71X-10/16 DN40-DN200DN37X-10/16 DN50-DN1000Main material :carbon steel 2cr13 ,stainless steel ductile iron butterfly valve