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AIRMIXS PU-3/8 Equal Straight Union Pneumatic Push-in Fitting (3/8" Tube O.D. x 3/8" Tube O.D.)

The AIRMIXS PU-3/8 is a high-performance, equal straight union connector engineered for fast, secure, and leak-free inline tube-to-tube splicing. Featuring an efficient dual-ended one-touch push-to-connect mechanism, it supports instant manual tubing integration from both sides, allowing you to connect or extend air lines effortlessly without requiring tools.

Its robust composite housing provides excellent wear resistance, minimal weight, and high structural durability under standard industrial working pressures. Designed to streamline workflow routing and simplify plumbing layouts, this union connector guarantees reliable sealing performance and an extended service life in dense pneumatic arrays, control manifolds, and automated factory machinery.

Key Features & Benefits

One-Touch Splicing: Simply push 3/8" O.D. tubing into both ends for an immediate, high-integrity grip; press the release sleeves to disconnect the lines instantly for simple system maintenance.

Premium Engineering Plastic Body: Molded from a durable engineering composite that resists impact, prevents contamination, and maintains a lightweight profile.

Standardized Visual Styling: Finished in a clean white/light gray aesthetic paired with coordinated release ring sleeves to match uniform visual layouts across modern machine builds.

Application Versatility: Perfect for clean air lines, vacuum environments, production machinery, and automated industrial infrastructure.

Parameter

Specification

Brand 

AIRMIXS 

Model Code 

PU-3/8 

Fitting Type 

Equal Straight Union (Push-In to Push-In) 

Applicable Fluid Type 

Compressed Air, Vacuum (Not intended for alternative fluids) 

Working Pressure Range 

$0 \text{ to } 1.0 \text{ MPa}$($0 \text{ to } 150 \text{ psi}$) 

Proof Pressure 

$3.0 \text{ MPa}$($435 \text{ psi}$) 

Negative Pressure Range 

$-100 \text{ kPa}$($-29.5 \text{ in Hg}$) 

Working Temperature Range 

$0 \text{ to } 60^\circ\text{C}$($32 \text{ to } 140^\circ\text{F}$) 

Body Material 

Engineering Plastic (POM) / Nickel-Plated Brass accents 

Release Sleeve Material 

Engineering Plastic (POM) 

Locking Claw Material 

Stainless Steel (SUS) 

Seal / O-Ring Material 

NBR (Nitrile Rubber) 

Recommended Tube Material 

Polyurethane (PU), Nylon (PA), Polyethylene (PE) 

8.00 ⃁ 8.00 ⃁