Camlock couplings are a quick-connect fitting system used across industrial, agricultural, and fluid transfer applications. A male adapter inserts into a female coupler and locks with a quarter-turn of two cam arms, no threads, no tools, and no complicated steps. That mechanical simplicity is what makes them so widely used wherever fluid lines need to be connected and disconnected repeatedly and quickly.
How They Work
A camlock coupling has two parts: a female coupler with two pivoting cam arms, and a male adapter sometimes called a plug. You insert the adapter into the coupler, swing the cam arms down, and they lock the adapter in place. To disconnect, lift both cam arms simultaneously and pull. A gasket in the coupler seals the joint when the cams are closed.
Know The Types
Camlock fittings use a lettering system to describe what's on each end of the connection:
- Type A: Male Adapter × Female Threaded
- Type B: Female Coupler × Male Threaded
- Type C: Female Coupler × Hose Barb
- Type D: Female Coupler × Female Threaded
- Type E: Male Adapter × Hose Barb
- Type F: Male Adapter × Male Threaded
- Type DC: Dust Cap (covers the Male Adapter when not in use)
- Type DP: Dust Plug (covers the Female Coupler when not in use)
For any given application, you need a coupler on one end and a matching adapter on the other. They mate regardless of what's on the back end of each fitting, so a Type B will accept any male adapter and a Type B will accept any male adapter.
Size
Camlock sizes refer to the coupling bore, typically in 1/2″, 3/4″, 1″, 1.5″, 2″, 3″, and 4″.
Where They're Used
Camlock fittings are standard equipment anywhere hoses get connected and disconnected frequently: tank truck loading and unloading, irrigation, water transfer, pump connections, and brewery transfer lines. They're not typically used inside a process system in place of Tri-Clover fittings, as for hygiene-critical inline connections Tri-Clover is preferred. Camlock shines on transfer hoses and bulk connections where speed of connection matters more than sanitary design.