Adapter double swivel to G1/4

UNDERSEA Ltd, a Southampton-based UK manufacturer specialising in adaptors and connectors for diving fill equipment, offers the 1235 as a precision G1/4 swivel fitting designed to correct angular misalignment between adjacent valve bodies and manifold blocks in fill panel assemblies. CNC-machined from chrome-plated brass, this compact component delivers long-term corrosion resistance in the humid environment of a compressor room while meeting British Standards and DIN norms for compressed-gas hardware. Its fixed G1/4 BSP male stud engages the manifold port while the freely rotating female thread accepts the mating valve without mechanical constraint.

Technical specifications

• Manufacturer reference: 1235
• Material: CNC-machined brass, chrome-plated finish
• Inlet thread: G1/4 BSP (gas) male — fixed stud
• Outlet thread: G1/4 BSP (gas) female — free-rotating swivel
• Intended use: angular alignment of valves, manifold blocks and fill panel components
• Manufacturer restriction: not for use as a charging hose end fitting
• Net weight: 100 g
• Dimensions: approx. 4.0 × 2.0 × 2.0 cm
• Country of manufacture: United Kingdom (Southampton, England)
• Design standard: British Standards and DIN norms
• Working pressure: not published by UNDERSEA for this reference — contact UNDERSEA Ltd directly (adjacent connectors in the range are rated to 300 BAR)

Recommended uses

The UNDERSEA 1235 G1/4 swivel adaptor is specified by dive centres and technical diving operations building or maintaining fill station infrastructure. It finds its place wherever two adjacent valve ports need to be brought into coaxial alignment without rotating either valve body — a common requirement on multi-outlet charging panels, nitrox blending systems and trimix fill racks. By incorporating a freely rotating female swivel, this rotating adaptor absorbs angular offset and prevents thread-stress leaks that develop over time on rigidly assembled manifolds.

Key strengths

• 360° free-rotating female swivel: absorbs angular offset between valve ports without mechanical stress
• CNC-machined chrome-plated brass: superior corrosion resistance in marine compressor room environments
• Universal G1/4 BSP gas threads: compatible with all standard European diving fill station components
• British manufacturing heritage: UNDERSEA Ltd Southampton — decades of specialist fill equipment expertise
• Compact form factor: minimal footprint in tight multi-valve manifold assemblies
• 2–3 working day dispatch from Southampton: worldwide shipping available direct from UNDERSEA

Warranty and standards

UNDERSEA Ltd manufactures all components and adaptors to British Standards and DIN norms applicable to compressed gas components. The chrome-plated CNC brass construction ensures dimensional accuracy and corrosion resistance throughout the component's service life. Manufacturer restriction: this component is intended for valve and block alignment only — it is not rated for use as a charging hose end connection. Complementary UNDERSEA range: reference 3082 (triple-port T-connector, 300 BAR) for T-junction manifolds, reference 3084 (90° elbow connector, 300 BAR) for right-angle configurations. +44 2382 358 111).