This is a 2 inch Aluminum Cam and Groove Male Adapter x Male NPT Thread, Type F Quick Disconnect. Cam and groove couplings or quick connect couplings are used as a hose connection to avoid leakages. This kind of coupling is popular because it is considered to be a simple and economical way of re-connecting and disconnecting. Type F adapters are normally used with Type B couplers, but can also be used with Type C and D couplers or DC (Dust Cap) of identical size.
The male side of this adapter will only connect to 2 inch female camlock. The male NPT threaded side of this adapter will only connect to a 2 inch female National Pipe Tapered (NPT) thread (Type F). For example, PVC or metal pipe fitting.
To make a connection, simply slide the camlock adapter into the camlock coupler and with normal hand pressure, press the cam levers down. Uncoupling is as quick and simple as coupling. Just lift the cam arms and remove the adapter.
Maximum operating pressure is 250 psi. Under no circumstances should cam and groove couplings be used for compressed air or steam service!