Couplings and fittings for air hose

air hose coupling identification chart

How They Work :
Quick-connect couplers are generally accepted as the fastest, easiest and most reliable means of joining low pressure pneumatic lines.

Despite differences in outward appearance, nearly all quick-connect couplers work on the same principles: Hardened balls or pins engage a groove in the coupler plug to hold it securely against a soft positive seal gasket. This also permits the assembly to swivel, which helps to prevent kinking or twisting of the hose. A sliding sleeve releases the locking balls when retracted, permitting the plug to be inserted or removed. The sleeve automatically returns to the locked position when released. An automatic shut-off valve in the coupler seals when being uncoupled, eliminating the need for a separate shut-off.
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