Getting Started
Picking the right air hose to fit your machine and needs is essential. There are a wide variety of different air hoses with different connections, widths, materials, and purposes. Air hoses are used on many different machines, such as air compressors, pressure washers, nail guns, sprayers, or even for pumping fluids such as oil or sewage water.

Sizing Your Air Hose
The width of your air hose will essentially determine the maximum amount of air it can carry. You should know that hose size is measured by inner diameter, so a 3/4” air hose has a hole in the center that measures 3/4”. Different materials and purposes of air hoses will make the wall thickness vary, thus the outer diameter for one 3/4” hose might be different for another 3/4” hose. Of course a wide outer diameter for your air hose usually allows for more mass and integrates reinforcement for greater burst strength.

Making it Fit
Typically, your air hose will come with the fittings on both ends of the hose, but if not, having knowledge on air hose sizes will be key to selecting the right size fittings. After you’ve obtained your fittings, you need to first add a connector to the thread on one end, then a coupler to the thread on the other end.