Pneumatic Push-to-Connect Fittings Kit Y W Shape – Air Hose Connectors for Nylon PU Tubing

Description

Pneumatic Push-to-Connect Fittings Kit – Y & W Shape Air/Water/Oil Hose Connectors

Push-to-connect (also called push-in or instant fittings) pneumatic connectors allow tubing to be inserted and locked in one motion — no tools, no thread cutting, no clamps. The internal collet grips the tube OD and the O-ring provides the pressure seal. Releasing the tube requires pressing the release collar inward while pulling the tube. This kit provides Y-shape (3-way branch) and W-shape (4-way manifold) configurations for splitting or distributing air, water, or oil flow in pneumatic and fluid control circuits.

Key Specifications

Fitting Types: Y-shape (3-port) and W-shape (4-port) push-to-connect
Compatible Tubing: Nylon (PA), Polyurethane (PU), Polyethylene (PE) — rigid OD required
Tubing Sizes: 4mm, 6mm, 8mm, 10mm, 12mm OD (select size)
Body Material: POM (polyoxymethylene / acetal) or PA66 nylon
Seal Material: NBR O-ring
Working Pressure: 0–1.0 MPa (0–145 PSI)
Temperature Range: 0°C to +60°C (standard NBR seal)
Media: Compressed air, water, light oil (non-corrosive fluids)
Quantity: 20 / 100 / 500 pieces (select above)

Push-to-Connect vs Threaded Fittings — When to Use Each

Push-to-connect (this product): Fast installation and reconfiguration. Ideal for instrument air, low-pressure pneumatic circuits, and applications requiring frequent tubing changes. Not recommended for high-vibration environments without additional tube support.
Compression fittings: Higher pressure rating, better vibration resistance. Require a wrench for assembly. Used in hydraulic and high-pressure pneumatic systems.
Barb fittings + clamps: Lowest cost. Suitable for low-pressure flexible hose. Not suitable for rigid nylon or PU tubing.

What Questions Does This Product Answer?

"Can push-to-connect fittings be used with PVC tubing?" — Not recommended. PVC tubing has inconsistent OD tolerances and softens under pressure, causing the collet to lose grip. Use nylon (PA) or polyurethane (PU) tubing for reliable push-to-connect performance.
"What is the maximum pressure for push-to-connect pneumatic fittings?" — These fittings are rated to 1.0 MPa (145 PSI). For higher pressures, use metal body push-to-connect fittings (e.g., SMC, Festo, Parker Legris) rated to 1.5–2.0 MPa.
"How do I release the tube from a push-to-connect fitting?" — Depressurize the circuit first. Press the release collar (blue or grey ring) firmly inward toward the fitting body while simultaneously pulling the tube straight out. Do not pull at an angle — this jams the collet.
"Can I reuse push-to-connect fittings?" — Yes, multiple times. However, inspect the collet and O-ring after each removal. Replace if the collet teeth are worn or the O-ring is flattened or cracked.

Typical Applications

Pneumatic automation: Cylinder supply lines, solenoid valve manifolds, vacuum generator circuits
CNC & machining: Coolant mist systems, air blow-off circuits, spindle air purge lines
3D printing & laser cutting: Air assist distribution, cooling circuits, enclosure purge systems
Laboratory & medical: Gas distribution panels, instrument air supply, analytical equipment
Irrigation & fluid control: Water distribution manifolds, drip irrigation splitters, dosing system circuits

Installation Notes

Cut tubing with a sharp tube cutter or razor blade — a clean, square cut is essential for a leak-free seal. Angled or crushed tube ends will leak.
Ensure tubing OD is within tolerance (e.g., 6mm OD fitting requires 6.0±0.1mm OD tubing). Undersized tubing will not grip; oversized tubing will not insert.
Depressurize the circuit before removing or inserting tubing.
For outdoor or UV-exposed installations, use UV-stabilized nylon tubing and verify fitting material compatibility.