1. amercian type pin plug coupling. 2. NST thread, with brass ring. 3. 1.5", ... 2",2.5",3",4" avaiable. 1. american type pin plug coupling.2. we can offer storz , john morris , french, GOST ... . we also can offer landing valves, fire hydrant valves, fire hose nozzles and many fittings for fire control in alu. and in brass ... brass.10. work pressure: 1-1.6MPa. american type pin plug coupling