Fuel-gas recovery systems are essential for reducing environmental pollution, minimizing fuel loss, and ensuring compliance with safety and emission regulations. The accessories used in these systems support vapor collection, monitoring, separation, and system control. These components can be classified by functional role, system type, installation position, and application level.
1. By Functional Role:
• Vapor Recovery Pumps:
Actively extract fuel vapors from the nozzle back to the underground tank or vapor processor. Available in mechanical or electronic versions.
• Breakaway Valves with Vapor Paths:
Ensure safety in case of accidental hose detachment, while maintaining vapor containment.
• Vapor-Liquid Separators:
Separate liquid fuel from returned vapors to prevent tank contamination and ensure vapor purity.
• Check Valves & Pressure Regulators:
Maintain proper vapor flow direction and system pressure balance, ensuring safe and efficient recovery.
• Balance System Hoses (Dual Hose Type):
Feature built-in vapor return lines, designed for Stage I or Stage II recovery systems.
2. By System Type:
• Stage I Accessories:
Used during fuel delivery from tankers to underground tanks—include tight-fitting adapters and vapor couplings.
• Stage II Accessories:
Used during vehicle refueling to recover vapors from the vehicle’s tank—include nozzles with vapor return paths, vapor hoses, and sensors.
3. By Installation Position:
• Nozzle-End Accessories:
Include vapor recovery nozzles, boot seals, and flow limiters—installed at the dispenser side.
• Underground Accessories:
Include vapor return pipes, vent valves, and tank-top fittings that manage vapor flow within the storage tank.
• Dispenser/Internal Accessories:
Vapor pumps, sensors, and control boards installed inside the dispenser body to monitor and regulate recovery performance.
4. By Application Level:
• Basic Compliance Systems:
Standard setups that meet national vapor recovery regulations, typically using balance methods.
• Enhanced Vapor Recovery (EVR):
Advanced systems with real-time monitoring, leak detection, and high recovery efficiency, often mandated in regions with stricter environmental standards.
All accessories are designed to be corrosion-resistant, explosion-proof, and compatible with standard fueling equipment, ensuring long-term durability and system performance.
