Air Line Couplings | McMaster-Carr

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Threaded on Both Ends

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37,646 Products

Fluid Handling

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

2,604 products

Hose

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

671 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

13,555 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

17,170 products

Pipe Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

47 products

Pipe Traps

Create a seal that prevents the backflow of gas

28 products

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

118 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

713 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

28 products

Hose Crimpers

Crimp ferrules onto hose to secure fittings

26 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

88 products

Manual On/Off Valves

Start and stop flow through a line

1,852 products

Motor-Actuated On/Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

33 products

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

177 products

Solenoid On/Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

386 products

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Fastening and Joining

Brazing Rings

Snap into unthreaded pipe fittings for an extra-strong, leak-resistant connection

5 products

Power Transmission

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products