Hose nozzle Bullnose (UK) male Pin Point - G1/4 male

The UNDERSEA 1220-PP is a high-pressure fill nozzle manufactured by Undersea Ltd (United Kingdom), a British specialist in diving fill station components and gas management fittings. It connects UK Bullnose storage cylinder valves — the BS 341-3 standard widely adopted across the United Kingdom, Australia, much of Asia, the Middle East, and beyond — to G1/4 BSP charging circuits. The integrated pin point protrudes into the cylinder valve on connection, mechanically opening the internal check valve for immediate, tool-free gas flow. This makes the 1220-PP the preferred choice for dive centres and technical diving facilities handling oxygen, helium, or mixed-gas storage with BS 341-3 outlets.

Technical specifications

• Part number: 1220-PP
• Inlet connection: UK Bullnose female — BS 341-3 (storage cylinder valves)
• Outlet: G1/4 BSP (British Standard Pipe), 60° cone seat
• Pin point: integrated pin opens the internal check valve of the cylinder on connection
• Material: chrome-plated brass — high corrosion resistance for marine environments
• O-ring: 10 × 2 mm (G1/4 BSP)
• Gas compatibility: compressed air, oxygen (O2), helium (He), argon (Ar), nitrogen (N2), and other inert or oxidising gases
• Maximum working pressure: 300 bar (HP storage cylinder service — BS 341-3 standard)
• Part-assembled to order — typical dispatch within 2–3 working days
• Related range: 1220 (G1/4, no pin point — without check valve release), 1220-NPT (1/4 NPT), 1221-PP (Euro Bullnose + pin point)

Applications

The 1220-PP is designed for professional dive centre filling stations and technical diving gas mixing installations using BS 341-3-equipped storage cylinders for oxygen or helium. This standard is dominant across the United Kingdom, Australia, New Zealand, much of Asia, and the Middle East — the same regions where liveaboard operations and Red Sea diving centres routinely rely on UK-standard gas infrastructure. The fitting integrates with G1/4-compatible fill whips, HP manifolds, and multi-bay filling systems. Equally suited to shore-based and liveaboard dive operations, commercial diving workshops, and rebreather (CCR) gas management where storage cylinders carry the Bullnose outlet.

Choosing between 1220 and 1220-PP: the standard 1220 (without pin point) suits cylinder valves that open by hose connection alone. The 1220-PP is required when the storage cylinder valve has an internal check valve (Schrader-type) that must be opened by a protruding pin — the standard configuration on UK Bullnose storage cylinders.

Key benefits

• Integrated pin point: opens the cylinder's internal check valve on connection — no additional tools needed
• Chrome-plated brass: superior corrosion resistance for long service life in saltwater environments
• BS 341-3 compliant: the recognised standard across the UK, Australia, Asia, and the Middle East
• G1/4 BSP output: universal compatibility with fill whips, manifolds, and standard professional dive station components
• UNDERSEA product family: available in G1/4 standard variant (1220) and NPT thread (1220-NPT)
• British-manufactured quality: part-assembled to order for consistent engineering on every unit

Standards and guarantee

The UNDERSEA 1220-PP is manufactured to British and DIN standards for high-pressure gas fittings used in industrial and diving applications. The inlet connection complies with BS 341-3 (British Standard for valve outlet connections on transportable gas cylinders). Undersea Ltd has specialised in diving fill station components for decades. Manufacturer's guarantee applies under standard Undersea Ltd terms.