Sockets accommodate five common plug shapes: Industrial, ARO, Lincoln, Tru-Flate, and European. Use them with a plug of the same coupling size to frequently connect and disconnect your line. Sockets are push-to-connect style. To connect, push the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects. Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.

Sockets with a push-on barbed end have sharp barbs that grip rubber push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip. To ensure a proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.

Sockets with a crimp-on barbed end insert into rubber hose and secure with a crimp-on hose ferrule.

Sockets with a safety exhaust bleed excess air pressure to prevent hose whip. To start flow, slide the outer sleeve forward. Exhaust pressure before releasing the inner sleeve by pulling the outer sleeve back.

Brass sockets have good corrosion resistance.