A Pneumatic Coupling (also called an air hose quick coupling or quick disconnect) is a device used to quickly connect and disconnect compressed air lines in pneumatic systems.
It allows fast tool changes, easy maintenance, and minimal air loss, making it essential in workshops, factories, and automation systems.
Main Components
Plug / Nipple (Male Half) – attached to the tool or hose end.
Socket / Coupler (Female Half) – attached to the air supply hose or manifold.
Locking Mechanism
Ball-lock or pin-lock system for secure retention.
Available in single shut-off (closes air on disconnect) or double shut-off (both ends seal).
Materials
Brass (corrosion-resistant, long life).
Steel (zinc-plated for durability in heavy-duty applications).
Stainless steel (for corrosive or food-grade environments).
Seals
NBR (standard), Viton®, EPDM for special fluids or temperature ranges.
Size Range: 1/4" to 1" (DN6 – DN25) common sizes.
Working Pressure: Typically up to 15 bar (220 psi).
Temperature Range: –20 °C to +80 °C (higher with special seals).
Connection Styles: Push-to-connect (most common), threaded sleeve, or safety locking type.
Workshop Air Tools – impact wrenches, drills, grinders, spray guns.
Factory Automation – pneumatic cylinders, valves, and actuators.
Automotive Service – tyre inflation, paint spraying, air-powered tools.
Robotics & Packaging – quick tool change and machine connections.
Construction Sites – portable compressors and pneumatic breakers.
Quick & Easy Operation – tool changes in seconds.
Minimal Air Loss – shut-off valves reduce wasted air.
Durable & Reliable – long service life even with frequent use.
Multiple Profiles Available – compatible with global standards.
Safety Options – venting couplers prevent hose whip on disconnection.
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