Pneumatic Push-In Fittings 4–16mm — Fast, Tool-Free Air & Water Line Connections
When you're routing compressed air lines, water tubing, or pneumatic circuits and need a reliable connection without threading or clamps, loose or mismatched fittings cause leaks, downtime, and frustration. These push-in pneumatic fittings are designed for DIYers, workshop builders, and small-shop technicians who need a clean, secure tube connection in seconds.
Each fitting is sold individually or in value packs of 2, 5, 10, or 20 pieces. The body is constructed from engineering-grade plastic with an internal collet-and-O-ring mechanism. Available in four configurations — Elbow (PV), T-shaped 3-Way (PE), Y-shaped 3-Way (PY), and Straight (PU) — and in tube OD sizes from 4mm (≈5/32") to 16mm (≈5/8"), covering the most common pneumatic tubing diameters used in US workshops.
Typical use cases include air compressor distribution lines, pneumatic tool quick-connect setups, DIY irrigation and water routing, and workshop automation projects where push-to-connect tube fittings save time over threaded alternatives.
🔗 Compatible with standard PA, PU, and PE pneumatic tubing. Match the model number to your tube's outer diameter (OD): PV/PE/PY/PU-4 = 4mm OD, -6 = 6mm, -8 = 8mm, -10 = 10mm, -12 = 12mm, -14 = 14mm, -16 = 16mm.
⚠️ Always measure your tube's outer diameter (OD) before selecting a model. Inner diameter and outer diameter are different — ordering by ID will result in a mismatch.
✅ Key Features of These Pneumatic Push-In Tube Fittings
-
⚡Tool-Free Push-to-Connect Installation — Insert the tube and the internal collet grips it instantly. No wrenches, thread tape, or clamps needed for fast pneumatic line assembly.
-
🔄Four Routing Configurations — Elbow (90° turn), T-shaped 3-Way (right-angle split), Y-shaped 3-Way (angled branch), and Straight (inline union) cover virtually every air hose routing layout.
-
📏Wide Size Range: 4mm to 16mm OD — Seven tube sizes from 4mm (≈5/32") to 16mm (≈5/8") fit the most common pneumatic tubing used in US workshops and DIY projects.
-
🔁Reusable & Releasable Design — Press the collet ring to release the tube without damaging the fitting. Reconnect as needed, making these push-in connectors ideal for reconfigurable air circuits.
-
🧱Engineering-Grade Plastic Body — Lightweight yet durable construction handles typical workshop pneumatic pressures. Resistant to oils and moisture commonly found in compressed air systems.
-
📦Flexible Pack Sizes — Available in 1, 2, 5, 10, or 20-piece packs so you can buy exactly what your project needs — from a single repair fitting to a full workshop stock-up.
📐 Technical Specifications — Pneumatic Push-In Fittings
| Fitting Types |
Elbow (PV) / T-shaped 3-Way (PE) / Y-shaped 3-Way (PY) / Straight (PU) |
| Tube OD Range |
4mm (≈5/32") — 16mm (≈5/8") |
| Available Models |
-4, -6, -8, -10, -12, -14, -16 (by tube OD in mm) |
| Body Material |
Engineering-grade plastic (typically PA or POM-based) |
| Compatible Tube Types |
PA (Nylon), PU (Polyurethane), PE (Polyethylene) pneumatic tubing |
| Working Pressure |
Typically up to 0.8–1.0 MPa (≈115–145 psi) — see variant options |
| Connection Method |
Push-to-connect (collet + O-ring seal) |
| Installation |
Tool-free; press collet to release |
| Pack Quantities |
1 / 2 / 5 / 10 / 20 pcs |
| Application |
Compressed air lines, water tubing, pneumatic circuits, DIY automation |
| Country of Origin |
See variant options |
❓ Frequently Asked Questions
How do I choose the right tube size for these push-in fittings?
Match the model number to your tube's outer diameter (OD). PV-4 / PE-4 / PY-4 / PU-4 accepts 4mm OD tubing; PV-16 accepts 16mm OD tubing. Always measure the tube OD — not the inner diameter. Quick inch reference: 4mm ≈ 5/32", 6mm ≈ 1/4", 8mm ≈ 5/16", 10mm ≈ 3/8", 12mm ≈ 1/2", 16mm ≈ 5/8".
What working pressure can these fittings handle?
These push-in fittings are generally rated for pneumatic systems operating at up to approximately 0.8–1.0 MPa (115–145 psi) under normal conditions. Actual performance depends on tube material, temperature, and installation quality. Always verify your system's pressure requirements before use.
Can these fittings be used outdoors or in wet environments?
These fittings are made from engineering-grade plastic and are typically suitable for indoor pneumatic and water line applications. For prolonged outdoor or high-humidity exposure, confirm the specific material grade is appropriate for your environment. They are not recommended for continuous submersion.
What tube types are compatible with these push-in fittings?
These fittings are designed for use with standard pneumatic tubing such as PA (polyamide/nylon), PU (polyurethane), and PE (polyethylene) tubing with the matching outer diameter. Ensure the tube end is cut cleanly and squarely for a reliable seal.
Do I need tools or thread tape to install these fittings?
No tools are required for the tube connection — simply push the tube into the fitting until it seats fully. The internal collet grips the tube automatically. To release, press the collet ring inward while pulling the tube out. No thread tape is needed for the tube side.
Which fitting type should I choose — Elbow, T-shaped, Y-shaped, or Straight?
Choose Straight (PU) for inline connections between two tubes. Choose Elbow (PV) to change direction 90°. Choose T-shaped 3-Way (PE) to split one line into two at a right angle. Choose Y-shaped 3-Way (PY) to split one line into two at an angled branch. Select based on your routing layout.
Are these fittings reusable?
Yes, push-in fittings are generally reusable. You can disconnect and reconnect tubing multiple times. However, inspect the collet and O-ring for wear after repeated use, especially in high-cycle applications, to ensure a leak-free seal is maintained.
🛒 Select your type, model size, and pack quantity above, then add to cart — ships from our US warehouse.
