In modern fuel stations equipped with Stage II (Stage 2) vapor recovery systems, the hose assembly plays a critical role in safely transporting fuel while simultaneously returning vapors to the recovery circuit. The HB Series Vapor Recovery Hose Assemblies are engineered to meet global environmental, safety, and durability requirements for retail fuel dispensing.
Around the world, this product category is known by many names, including coaxial fuel hose, petrol vapor recovery hose, double-wall dispensing hose, vapor return hose, fuel & vapor combined hose, and Stage II vapor hose assembly. Regardless of the terminology, the functional requirement remains the same: reliable fuel delivery with efficient vapor containment.
Advanced Coaxial Structure for Dual Flow Paths
The HB Series adopts a true coaxial hose design, where fuel and vapor are transported through separate but integrated channels. The inner tube is dedicated to vapor return, while the annular space between the inner and outer layers carries liquid fuel. This configuration ensures stable vapor recovery performance while maintaining smooth fuel flow during refueling.
Such a design is widely recognized in North America, Europe, the Middle East, and Asia as the preferred solution for vacuum-assist vapor recovery systems.
Built for Safety, Flexibility, and Long Service Life
To support demanding daily operations at fuel stations, the hose outer layer is manufactured from high-grade nitrile rubber reinforced with a metal braided structure. This construction delivers:
Excellent resistance to kinking and deformation
Reliable static electricity dissipation
Low elongation under pressure, reducing operator fatigue
Swivel couplings at both ends allow free rotation during installation and use, preventing hose twisting and extending overall service life.
Easy Maintenance and Cost-Effective Repair
One of the key advantages of the HB Series is its maintenance-friendly structure. The outer hose clamp and inner vapor connector are secured using a stop-ring system, allowing fast disassembly when repairs are required. Sealing components can be replaced without special tools, minimizing downtime and lowering long-term operating costs for station owners.
This modular approach is particularly valued in regions where hoses are referred to as serviceable vapor hoses or repairable coaxial hose assemblies.
Broad Compatibility with Global Fueling Equipment
The HB Series hose assemblies are designed to interface seamlessly with a wide range of vapor recovery nozzles, breakaway valves, and fuel dispensers from different manufacturers. Standard metric threading makes them suitable for both new installations and retrofit projects.
They are commonly used in systems described internationally as petrol dispensers, gasoline pumps, fueling machines, or retail fuel dispensers.
Full Range for Different Climates and Applications
To meet diverse environmental conditions, the HB Series is available in two temperature grades:
Regular Grade: Suitable for ambient temperatures from −25°C to +55°C
Low-Temperature Grade (LT): Designed for cold climates down to −40°C, maintaining flexibility and sealing integrity
Both full-length hose assemblies and short extension hose assemblies are available. Short assemblies are typically installed between the dispenser outlet and breakaway valve to optimize pull-off force direction, helping the breakaway valve close reliably in the event of accidental drive-offs.
Typical Applications
Stage II (Stage 2) vapor recovery fuel dispensers
Gas stations and petrol stations
Retrofit vapor recovery upgrades
New environmentally compliant fueling installations
HB Series Vapor Recovery Hose Assemblies deliver a balanced combination of safety, durability, ease of maintenance, and global compatibility—making them a dependable solution for modern vapor-controlled fuel dispensing systems worldwide.
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