· Certificate: FM/UL/3C/CE,etc.
· Standard: ANSI/UL 213C
· Housing Material: Ductile iron conforming to ASTM A-536, Grade 65-45-12.
· Thread: Female thread, NPT / BSPT
· Rated pressure: 300~500PSI
· Surface: Hot dip galvanized/electrophoretic/epoxy powder painting
· Color: Variable colors for choice
