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OEM/ODM
Product Description
| Product Name | Forestry Coupling | 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 Quick Connect Forestry Expansion Ring Coupling represents a breakthrough in wildland firefighting efficiency, engineered to reduce hose connection time by up to 70% compared to traditional threaded couplings. Designed specifically for the rigors of forestry operations, this coupling features an external lug design with a spring-loaded expansion ring, enabling one-handed connection even with gloved hands or in muddy conditions.
Manufactured to meet CAN/ULC-S558 and CAN/ULC-S574 standards, this coupling supports 25 mm (1″), 38 mm (1.5″), and 65 mm (2.5″) forestry hoses—the most common sizes in wildland firefighting. Constructed from heat-treated aluminum alloy or hot-dipped galvanized steel, it balances lightweight performance with resistance to forest debris, abrasion, and extreme temperature fluctuations. Its unique expansion ring mechanism creates a watertight seal at pressures up to 16 bar (232 psi), ensuring no pressure loss during critical water delivery.
The coupling’s innovative design centers on rapid deployment and durability. The external lug pattern with beveled edges allows blind connection—critical when visibility is obscured by smoke or vegetation. The expansion ring, made from tempered spring steel, maintains constant sealing pressure across temperature ranges from -40°C to 80°C (-40°F to 176°F), preventing leaks in freezing or hot conditions.
Aluminum models weigh 280–550 grams (9.9–19.4 oz) depending on size, reducing operator fatigue during long hose lays, while galvanized steel variants offer enhanced impact resistance for rocky terrain. All units feature a nitrile rubber O-ring with a backup Teflon seal, providing dual-layer protection against leaks. The coupling’s smooth exterior minimizes snagging on underbrush, a common hazard in forest environments.
Engineered for high-flow applications, the coupling supports maximum flow rates of 679 LPM (179 GPM) for 65 mm sizes, ensuring adequate water delivery for large wildland fires. Its 16 bar (232 psi) working pressure rating exceeds the typical 10–12 bar requirements of forestry systems, providing a safety margin for pump operations. The expansion ring design eliminates cross-threading issues, a frequent cause of connection failures in traditional couplings.
A built-in locking lever prevents accidental disconnection under pressure, while the visual alignment indicators (colored bands) ensure proper mating before pressurization. For added safety, the coupling releases easily under residual pressure (up to 2 bar), reducing the risk of hose whip when disconnecting.
Forestry operations demand equipment that thrives in harsh conditions, and this coupling delivers. Its corrosion-resistant finishes (anodized aluminum or galvanized steel) withstand exposure to pine sap, mud, and rain without degradation. The internal flow path is streamlined to minimize friction loss, preserving water pressure over long hose lays—a critical factor in wildland firefighting where hose lengths often exceed 300 meters.
The coupling is also compatible with common forestry accessories, including wye splits, reducers, and valve assemblies, enhancing its versatility in complex hose configurations.
This coupling is indispensable in wildland and rural firefighting scenarios:
• Wildfire Initial Attack: Enables quick hose deployment by hand crews to contain small fires before they spread.
• Backpack Pump Operations: Lightweight aluminum models pair with portable pumps for remote areas inaccessible to vehicles.
• Forestry Tanker Connections: Facilitates rapid refilling of mobile water tanks from hydrants or natural water sources.
• Brush Fire Suppression: Resists damage from rocks, branches, and rough terrain during hose deployment in dense vegetation.
The tempered steel expansion ring expands into the mating coupling’s groove when connected, creating a uniform seal around the entire circumference—unlike threaded couplings which rely on precise threading alignment .
Aluminum is ideal for weight-sensitive applications like backpack crews (30% lighter than steel), while galvanized steel offers superior impact resistance for vehicle-mounted hose or rocky terrain use .
While designed for forestry hoses, adapters are available to connect to NST, BSP, or Storz couplings, making it compatible with municipal fire equipment for mutual aid operations.
Monthly cleaning with fresh water removes debris from the expansion ring. Annual inspection of the O-ring for cracks is recommended, with replacement using manufacturer-approved nitrile seals when needed .
Galvanized steel models provide moderate saltwater resistance, but for coastal wildfires, we recommend our marine-grade stainless steel variant (sold separately) for long-term corrosion protection.
