Aluminum 4" Female Camlock x 4" Female Camlock Material_Steel NH threads are used by

NH threads are used by most fire departments and fire trucks

A coupled length of hose should be tested to 1 1/2 times the working pressure and held for fifteen minutes without leaking or coupling movement

Type "A" stainless steel 2 inch male camlock (Cam & Groove) coupler to 3 inch female NPT threads

USDA Forestry Service fire hose reducer feature aluminum coupling with a 600 PSI test pressure

Aluminum 4" Female Camlock x 4" Female Camlock Material_Steel NH threads are used byGlobal type "D" aluminum 4 inch female camlock (Cam & Groove) coupler to 4 inch female camlock (Cam & Groove). Under no circumstances should cam and groove couplings be used for compressed air or steam service! Connections The female side of this adapter will only connect to 4 inch male camlock How it works To make a connection, simply slide the camlock adapter into the camlock coupling and with normal hand pressure, press the cam levers down.