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OEM/ODM
Product Description
| Product Name | Instantaneous Male Adapter | Lead Time | 10-30days |
| Technological Process | Forging | Suitable Medium | Water/Foam |
| Working Pressure | ≧2.5MPa（360PSI） | Package | Standard Export Carton |
| Bursting Pressure | 6.0MPa(870PSI) | MOQ | 10PCS |
The BS336 John Morris Male Adapter is a precision-engineered fitting that serves as the cornerstone of British Standard firefighting systems, enabling secure connections between hoses, hydrants, and appliances. Named for its adherence to BS 336:1969 standards (British Specification for Instantaneous Fire Couplings and Adapters), this male adapter features a unique “instantaneous” design that allows quick connection without threading—critical for time-sensitive firefighting operations in the UK and Commonwealth countries.
Manufactured in light alloy for freshwater applications and gunmetal (a copper-tin alloy) for saltwater environments, the adapter is available in sizes from 1.5″ (38 mm) to 2.5″ (65 mm) to match common British fire hose diameters. Its male instantaneous coupling end mates with female BS336 couplings, while the opposite end features BSP (British Standard Pipe) threads for connection to hydrants, pumps, or other threaded equipment. The adapter’s working pressure rating of 16 bar (232 psi) ensures compatibility with standard UK firefighting systems.
Every adapter is machined to meet BS 336’s strict dimensional tolerances, with a lug spacing of 63 mm (for 1.5″) to 89 mm (for 2.5″) ensuring perfect mating with female couplings. The instantaneous end features three evenly spaced lugs that engage with corresponding slots in female couplings, creating a secure connection with a simple push and twist motion. This design eliminates cross-threading issues common in fully threaded adapters, reducing connection failures in emergencies.
The BSP threaded end (available in both parallel and tapered variants) meets BS 21 standards for pipe threads, ensuring compatibility with UK hydrants and firefighting appliances. Laser-etched size markings and manufacturer part numbers facilitate quick identification and inventory management.
Light alloy models (aluminum-copper alloy) offer an optimal strength-to-weight ratio, weighing 250–450 grams (8.8–15.9 oz) depending on size, reducing operator fatigue during hose handling. Gunmetal models, designed for saltwater or industrial environments, provide superior corrosion resistance and withstand 1,000+ hours of salt spray testing per ASTM B117. Both materials feature a protective coating: clear anodization for light alloy and a red oxide finish for gunmetal, enhancing visibility and preventing corrosion.
The adapter’s internal flow path is precision-machined to minimize turbulence, reducing pressure loss by up to 10% compared to generic adapters—a critical factor in maintaining effective flow rates in long hose lines.
A replaceable EPDM rubber washer ensures watertight sealing, with a recessed design that protects the washer from damage during connection. The instantaneous coupling’s lug engagement creates a mechanical lock that prevents disconnection under pressure, while the threaded end includes a hexagonal nut for secure wrench tightening. For specialized applications, a spring-loaded non-return valve option is available, preventing backflow when pumping stops—ideal for tank filling or closed-loop systems.
This BS336 adapter is essential in British-standard firefighting infrastructure:
• Fire Appliance Fittings: Connects pumps, monitors, and other appliances to hose lines on British fire trucks.
• Industrial Fire Systems: Used in factories, power plants, and oil refineries operating to UK safety standards.
• Marine Firefighting: Gunmetal models connect shipboard fire hoses to shore-based hydrants in UK ports.
• Heritage Buildings: Compatible with older firefighting systems in historic structures that retain BS336-compliant equipment.
BS336 uses an instantaneous lug-based design, while standards like NST (US) or Storz (European) use threads or symmetrical lugs. BS336 is primarily used in the UK, Commonwealth countries, and some former British colonies .
Yes, when paired with appropriate reducers or adapters, it can connect BS336 hoses to NST, BSP, or metric equipment, facilitating mutual aid with international firefighting teams.
Select light alloy for freshwater municipal use. Choose gunmetal for saltwater environments (marinas, coastal areas) or industrial settings with chemical exposure .
Inspect the EPDM washer quarterly for cracks and replace annually. Clean threads with a wire brush to remove debris, and apply anti-seize compound to threaded ends annually to prevent corrosion bonding.
Yes, both materials are chemically resistant to standard AFFF and Class A foam concentrates, making it suitable for foam-water systems in BS336-compliant installations.
