This female&male thread adaptor series include so many International Standard types such as STORZ, ANSI PIN, JOHN MORRIS, MACHINO , NAKAJIMA , BOGDAN etc to be selected by you. Material: Brass alloy, Aluminum alloy Pressure durable: a) Working pressure: 1.6mpa; b) Strength test pressure: 2.4mpa. Usage: Used for Branch pipes, fire hoses, fire vehicles, fire hydrants and fire pumps. Each of them has a very strong resistance property to high temperature, corrosion & pressure. Oil and gas resistant All of them are of excellent quality & competitive quotation for you. And we always promise speedy delivery. Size available: 1/2" , 3/4" , 1" , 1-1/2" , 1-3/4" , 2" , 2-1/2" , 3" up to 4" , 5" & 6" 2-1/2" x 1-1/2" 2-1/2" x 2" 2-1/2" x 2-1/2" Standards: ISO9001:2000 CCCF Packing: International seaworthy carton packing or according to your special requirements. We are the qualified member of NFPA .