Pneumatic Push to Connect Fittings — Elbow, Tee, Straight & More | Stainless Steel Air Line

Match the fitting size to your tubing outer diameter (OD). For example, a 6mm fitting accepts 6mm OD tubing. If you're working with imperial tubing, 1/4" OD is approximately 6.35mm — in most cases a 6mm fitting will work, but verify your tubing spec before ordering. For threaded ports (PC, PCF, PL, SL, PB series), match the thread size to your valve or manifold port: M5, G1/8", G1/4", G3/8", or G1/2" BSP. The size code in the variant name tells you both: e.g., PC6-02 = 6mm tube OD x G1/4" thread.

Stainless steel push-to-connect fittings of this type are generally rated for working pressures up to approximately 150 PSI (10 bar) at room temperature. Actual ratings depend on tubing material, wall thickness, and size — smaller tube sizes typically handle higher pressures. Always verify against your system's operating specifications and do not exceed the tubing manufacturer's rated pressure.

Yes. The stainless steel body provides significantly better corrosion resistance than standard brass or zinc push-to-connect fittings, making them suitable for outdoor pneumatic systems, food-processing environments, and applications exposed to moisture or mild chemicals. For highly aggressive chemical environments (strong acids, chlorinated solutions), contact us to confirm material compatibility before ordering.

The threaded variants use BSP (British Standard Pipe) parallel threads — also written as G threads (G1/8", G1/4", G3/8", G1/2") — as well as M5 metric threads where indicated. BSP parallel threads are the global standard for pneumatic equipment and are compatible with most pneumatic valves, cylinders, and manifolds. Note: BSP and NPT threads are not interchangeable. If your equipment uses NPT ports, an adapter will be required.

No tools are needed for the tube connection. Simply push the tubing firmly and squarely into the fitting until it seats — the internal collet grips the tube automatically and creates a seal. To release, press the release collar inward while pulling the tube out. For threaded ends, tighten with a wrench and apply PTFE tape to the threads before installation to ensure a leak-free seal.

• Straight (PU): Inline tube-to-tube connection, same size.
• Reducer Straight (PG): Inline connection between two different tube sizes.
• Bulkhead Straight (PM): Pass-through panel or enclosure wall mounting.
• 90 Elbow (PV): Direction change without a threaded port.
• Male Stud Elbow (PL) / Male Stud 90 Elbow Valve (SL): Direction change with a threaded port connection to a valve or manifold.
• Tee (PE) / Wye (PY): Split one line into two — tee for T-shape, wye for Y-shape.
• Tee Reducer (PEG): Split one line into two with a reduced branch size.
• Male Stud Tee (PB): Tee with a threaded port on the branch.
• Tee Valve (SA): Tee with an integrated flow control valve.
• Mufflers (Cylinder Head / Flat Head): Screw into exhaust ports to reduce noise.

Yes. These push-to-connect fittings are generally compatible with semi-rigid pneumatic tubing including polyurethane (PU), nylon (PA), and polyethylene (PE) tubing of the matching outer diameter. Very soft or highly flexible tubing may not grip securely in the collet — in those cases, an insert sleeve is typically recommended. Contact us if you're unsure about your tubing type.