Pneumatic Push-In Fittings — Stainless Steel Hose Connectors for Reliable Air Line Routing
Routing compressed air lines through tight spaces, around corners, or across panel walls is frustrating when fittings leak, corrode, or require tools to swap out. DIYers, workshop builders, and automation technicians need push-in fittings that connect instantly, hold under pressure, and resist the rust that plagues standard brass or zinc fittings in humid or outdoor environments. These stainless steel pneumatic push-in fittings deliver exactly that.
Each fitting is sold individually (1 pcs) or in bulk (100 PCS for select sizes) and is machined from stainless steel for corrosion resistance. The range covers tube outer diameters from 4mm (≈5/32") to 16mm (≈5/8") and includes nine fitting types: Straight, Straight Reducing, Straight Bulkhead, T-Shape, Y-Shape, L-Shape, Flow Control Valve, Straight Female Stud (BSP 1/8"–1/2"), and Straight Male Stud (M5, BSP 1/8"–3/4"). Select your fitting type and size from the variant dropdowns above.
Typical use cases include pneumatic automation panels where bulkhead fittings route air through enclosure walls, workshop air compressor distribution lines using T and Y splitters to feed multiple tools simultaneously, and robotic or CNC machine builds where L-shape fittings make clean 90° turns without kinking tubing. The flow control valve variants are ideal for adjusting cylinder speed in pneumatic actuator circuits.
How do I choose the right fitting size?
Match the fitting size to your tubing's outer diameter (OD). For example, a 6mm fitting accepts 6mm OD tubing. For reducing fittings (e.g., 8mm–6mm), the larger number is the inlet OD and the smaller is the outlet OD. If you're unsure, measure your tube OD with calipers before ordering. Common conversions: 4mm ≈ 5/32", 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 1/2".
What tube types are compatible with these push-in fittings?
These fittings are generally compatible with semi-rigid polyurethane (PU), nylon (PA), and polyethylene (PE) tubing. Soft silicone or rubber hose is typically not recommended for push-in style connectors as it may not seal reliably. Ensure the tube wall is round and undamaged at the cut end before inserting.
What is the working pressure range?
Stainless steel push-in fittings of this type typically handle working pressures up to 150 PSI (approximately 10 bar) depending on size and tube material. Always verify the rated pressure for your specific application before use, especially in safety-critical pneumatic circuits.
Are these fittings suitable for outdoor or corrosive environments?
Yes. Stainless steel construction provides strong resistance to rust and corrosion, making these fittings suitable for outdoor pneumatic systems, humid workshops, and light chemical environments. For highly aggressive media or continuous moisture exposure, please contact us to confirm compatibility with your specific conditions.
What thread standards are available for the stud fittings?
The male and female stud variants are available with BSP (British Standard Pipe) threads in 1/8", 1/4", 3/8", 1/2", and 3/4" sizes, as well as metric M5. BSP threads are widely used on pneumatic cylinders, solenoid valves, and manifolds. Select your thread size from the Fitting Size dropdown when ordering.
How do I release the tube from a push-in fitting?
To release the tube, depressurize the line first, then press the collet ring inward toward the fitting body while pulling the tube straight out. Do not twist or yank the tube, as this may damage the collet teeth and compromise the seal on future insertions.
Which fitting type should I choose for my application?
-
Straight — Inline tube-to-tube connection, same diameter.
-
Straight Reducing — Step down between two different tube ODs.
-
Straight Bulkhead — Panel-mount pass-through for routing air through enclosure walls.
-
T-Shape — Split one air line into two, or merge two into one.
-
Y-Shape — Similar to T but at an angled branch for tighter routing.
-
L-Shape — 90° elbow for direction changes without kinking tubing.
-
Flow Control Valve — Adjustable needle valve to regulate cylinder or actuator speed.
-
Female Stud — Connect tubing to a male-threaded port (e.g., cylinder, valve body).
-
Male Stud — Connect tubing to a female-threaded port or manifold.
🛒 Select your fitting type and size above, then add to cart — ships from our US warehouse.
