... type; B) Size: 1-1/4", 1-1/2", 2" ,2-1/2"; C) Material: aluminum; D) NFPA member. Fire hose coupling ... wyes, manifolds, strainers, etc).A) type: Ansi Pin type;B) Size: 1-1/4", 1-1/2", 2" and 2-1 ... high request, our experienced S&D group in charge of the design of all products and new mould, and all the items ... finishing and thread test.F) We are the qualified member of NFPA. Ansi Pin Fire Hose Coupling