Aluminum 2 1/2" Male Camlock Dust Plug (USA) Hose Size (ID)_5/8" Hoses The most common thread type

The most common thread type in use by fire departments today is NST or National Standard Thread

Female red dry hydrant adapter with aluminum NH / NST plug

Female 2 1/2 inch NPSH

less expensive unencased gauge

Aluminum 2 1/2" Male Camlock Dust Plug (USA) Hose Size (ID)_5/8" Hoses The most common thread typeGlobal type "DP" aluminum 2 1 2 inch camlock (Cam & Groove) male dust plug. Under no circumstances should cam and groove couplings be used for compressed air or steam service! Connections The male side of this adapter will only connect to a 2 1 2 inch female 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. Uncoupling is as quick and simple as