Match the fitting size to your tubing's outer diameter (OD). For example, a 6mm fitting accepts 6mm OD tubing. Common sizes in this listing range from 4mm (≈5/32") to 16mm (≈5/8"). Measure your existing tube OD with calipers before ordering to ensure a secure, leak-free connection.

The Male Straight (PC), Female Straight (PCF), and Male 90° Elbow (PL) types use BSP (British Standard Pipe) threads — 1/8", 1/4", 3/8", and 1/2" — as well as M5 metric threads where listed. BSP threads are generally compatible with most pneumatic equipment sold in the US and internationally, but are not the same as NPT (National Pipe Taper). If your equipment uses NPT ports, an adapter will typically be required.

Push-to-connect pneumatic fittings of this type typically support working pressures up to 150 PSI (≈10 bar) when used with compatible polyurethane or nylon tubing. Actual rated pressure may vary by size and type. Confirm the rated pressure for your specific application before use, and never exceed the rated pressure of the weakest component in your air circuit.

The fittings are generally made from engineering-grade plastic (PA/nylon body) with stainless or nickel-plated internal collets. They are suitable for indoor pneumatic systems and light-duty outdoor use in sheltered conditions. For prolonged outdoor exposure, high-humidity, or chemically aggressive environments, contact us to confirm material suitability for your specific application.

Yes. These push-to-connect fittings are designed to work with standard PU (polyurethane), PA (nylon), and PE (polyethylene) pneumatic tubing of the matching outer diameter. They are not intended for hydraulic or liquid media under high pressure. For water or fluid applications, contact us to confirm compatibility.

Use this guide as a starting point:

• Straight (PU): Inline tube-to-tube connection, same diameter.
• Straight Reducer (PG): Inline connection between two different tube ODs.
• Tee Piece (PE): Split one air line into two branches, same diameter.
• Tee Piece Reducer (PEG): T-branch with a size change on the center port.
• 90° Elbow (PV): Right-angle tube-to-tube turn, same diameter.
• Cross Shape 4-Way (PZA): Four-way air distribution from a single point.
• Male Straight (PC) / Female Straight (PCF): Connect tubing to a threaded port on a valve, cylinder, or manifold.
• Male 90° Elbow (PL): Right-angle connection from a threaded port to a tube.

Depressurize the line completely before disconnecting. Then push the collet ring (the outer ring at the fitting mouth) inward toward the fitting body while simultaneously pulling the tube straight out. Do not twist or yank the tube, as this can damage the collet teeth and prevent a reliable reconnection.