Stainless Steel Pneumatic Push-to-Connect Fittings — Straight, Elbow, Tee, Wye & More

Measure the outer diameter (OD) of your tubing — not the inner diameter. Our fittings are sized by tube OD: 4mm (≈5/32"), 6mm (≈1/4"), 8mm (≈5/16"), 10mm (≈3/8"), 12mm (≈1/2"), 14mm (≈9/16"), and 16mm (≈5/8"). When in doubt, go one size up — a slightly loose fit is easier to correct than a fitting that won't seat.

Stainless steel push-to-connect pneumatic fittings of this type are generally rated for working pressures up to 150 PSI (approximately 10 bar) at ambient temperatures. Always verify the rated pressure for your specific variant before use in high-pressure systems.

Yes. The stainless steel body provides significantly better corrosion resistance than standard brass or zinc fittings, making them well-suited for humid, washdown, or mildly corrosive environments. For highly aggressive chemical exposure, confirm material compatibility with your specific media.

The male stud (PC) and female stud (PCF) variants use BSP (British Standard Pipe) and metric M5 thread standards, as indicated by the size codes (e.g., PC4-01 = 4mm tube × 1/8" BSP; PC4-M5 = 4mm tube × M5 metric). PG-series reducer fittings use metric tube OD sizing on both ends. Always match the thread standard to your manifold or valve block. Note: BSP and NPT threads are not interchangeable.

The push-to-connect tube end requires no tools — simply push the tubing in until it seats and the collet grips. For threaded male stud ends, PTFE thread tape is generally recommended to ensure a leak-free seal on the port side. The Male Stud Elbow with Seal (PL series) includes an integrated O-ring seal, so thread tape is typically not required on those variants.

Depressurize the line first. Then press the collet ring (the outer ring around the tube entry) inward toward the fitting body while simultaneously pulling the tube straight out. Avoid twisting the tube during release to protect the collet teeth.

Use the Tee PE when splitting one line into two equal-diameter branches at 90°. Use the Wye PY when you need a Y-shaped split at a shallower angle for smoother flow distribution. Use the Tee Reducer PEG when the branch line needs to be a smaller diameter than the main run — for example, 10-6-10mm routes a 10mm main line with a 6mm branch takeoff.

Both mufflers reduce exhaust noise on pneumatic valves and cylinders. The Cylinder Head Muffler has a taller, cylindrical sintered element that generally offers higher flow capacity and lower back-pressure, making it better for high-cycle applications. The Flat Head Muffler has a lower profile and is preferred in space-constrained installations. Both are available in 1/8", 1/4", 3/8", 1/2", and 3/4" BSP sizes.