1.DN50-1200(2"~48") 2.PN1.0/1.6(150/200PSI) 3.rubber coated 4.different standards 5.handle,hand ... , Vapor, Food, Medicine, Oils, Acids,Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design & ManufactureFlange ConnectionFace to Face DimensionTest ...