Key Features

✓ Clearance Pneumatic Push-In Fitting
✓ Straight Union Tube Connector
✓ Connects Two Pneumatic Tubes
✓ Equal & Reducing Size Options
✓ One-Touch Push-In Connections
✓ 4mm to 12mm Tube Sizes
✓ Nickel-Plated Brass & POM Body
✓ Nickel-Plated Brass Release Sleeves
✓ NBR Seals
✓ Operating Pressure 0–9 Bar
✓ Maximum Temperature +60°C
✓ Suitable for Nylon & Polyurethane Tubing
✓ Quick Tube Installation & Removal
✓ Compact In-Line Connection
✓ Pneumatic & Automation Systems
✓ End of Line – Limited Stock

Description

Air Line Straight Union Push-to-Connect Fittings – NPU & NPG Series


Equal & Reducing Pneumatic Tube Connectors

The NPU and NPG Series pneumatic straight union push-in fittings provide a compact in-line connection between two pneumatic tubes.

NPU fittings provide an equal tube-to-tube connection, while NPG reducing unions allow two different tube sizes to be connected directly without additional adaptors.

The one-touch push-to-connect design enables fast, tool-free installation. To disconnect, simply press the release sleeve and withdraw the pneumatic tube.

Available in metric tube sizes from 4mm to 12mm, including equal and reducing configurations.

Construction

The NPU and NPG fittings combine durable engineering plastic POM construction with nickel-plated brass components for a lightweight and reliable pneumatic tube connection.
✓ Durable POM body
✓ Nickel-plated brass components
✓ Nickel-plated release sleeves
✓ NBR sealing system
✓ One-touch tube connections
✓ Secure tube retention

Pressure & Temperature

Operating Pressure: 0–9 Bar
Maximum Temperature: +60°C
Suitable Media: Compressed air, water and compatible non-aggressive gases
Tube Compatibility: Nylon and polyurethane pneumatic tubing

Typical Applications

Suitable for compressed-air distribution, pneumatic cylinders, control panels, automation machinery, instrumentation and general pneumatic installations requiring an equal or reducing in-line tube connection.

Clearance – Replaced by GPU Series

The NPU and NPG Series are now discontinued and available only while remaining stock lasts.
They have been replaced by the upgraded GPU Series Straight Union Push-In Fittings. For new installations and ongoing availability, see the related GPU products below.

Related Products & Categories.



FRL Air Treatment Equipment

Push In Fittings & Flexible Tubing
View Technical Specification

Technical Specification

Brand: Shako Co Ltd

Model: NPU,NPG

Width: 10.00 mm

Height: 10.00 mm

Depth: 40.00 mm

Weight: 0.02 kg

Valve / Product Type: Fittings + Tubing

Body Material: Brass, Delrin (POM)

Port Size: 4mm, 6mm, 8mm, 10mm, 12mm

Pressure: 0.02 Bar (20 mBar), 0.1 Bar (100 mBar), 0.2 Bar (200 mBar), 0.3 Bar (300 mBar), 0.4 Bar (400 mBar), 0.5 Bar (500 mBar), 0.6 Bar (600 mbar), 0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar

Seals: NBR

Media: Air, Gases (Non Aggressive), Water

Reviews

★★★★★5.0 / 5 1 reviews

★★★★★ Verified Purchase

Good value excellent utility

Reviewed on 16/08/2026 by Alan G - Wotton-under-Edge, United Kingdom

*On Sale* Union straight pushin airline fitting 4mm to 12mm

★★★★★ 5.0 / 5 (1 review)

£0.43 incl. VAT £0.36 ex. VAT

-84% Was £2.71 incl. VAT

Brand: Shako Co Ltd

Model: NPU,NPG

Stock: 9 in stock

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