Pneumatic Push Fit Y-Shape 3-Way Connector — Air & Water Tube Joiner

Measure the outer diameter (OD) of your tubing with a caliper. These connectors are sized by OD: 4mm (approx. 5/32 in), 6mm (approx. 1/4 in), 8mm (approx. 5/16 in), 10mm (approx. 3/8 in), and 12mm (approx. 1/2 in). Always match the connector size to your tube OD — not the inner diameter — to ensure a proper collet grip and leak-free seal.

Push fit pneumatic connectors of this type generally support working pressures up to approximately 150 PSI (approx. 10 bar), though the exact rating depends on tube material, wall thickness, and connector size. For high-pressure or safety-critical applications, contact us to confirm the rated pressure for your specific size.

These connectors are typically made from engineering-grade plastic with internal O-ring seals, making them suitable for water lines and humid indoor environments. For prolonged outdoor UV exposure or chemical media, additional protection or a different material grade is generally recommended. Contact us if you have a specific outdoor or chemical application.

Yes. These push fit connectors follow common metric OD sizing standards and are designed to work with PU (polyurethane), PA (nylon), and PE (polyethylene) tubes from most major brands. As long as your tube outer diameter matches the selected size and the tube end is cut cleanly and squarely, the connector will seat and seal correctly.

No tools are required. Push the tube firmly into the connector port until it seats — the internal collet grips the tube automatically. To release, press the release collar inward while pulling the tube out. No thread tape or sealant is needed for the tube connection itself.

The Y-shape 3-way configuration lets you split one air or water line into two branches, or merge two lines into one. Common uses include distributing compressed air to multiple pneumatic tools, splitting irrigation water lines, routing CO2 in aquarium setups, and building branched pneumatic circuits in automation or workshop environments.

In most cases, yes. Push fit connectors are designed for repeated connect and disconnect cycles. If the tube end becomes deformed or scratched after removal, simply cut a fresh, clean square end before reinserting to maintain a leak-free seal. Avoid using damaged or out-of-round tubing.

For a single repair or prototype, the 1 or 4-piece option is generally sufficient. For a full workshop compressed air distribution system with multiple branch points, the 10 or 20-piece pack is typically more economical. The 50 and 100-piece options are well-suited for contractors, small shops, or anyone stocking spare fittings for ongoing maintenance.