Vapor Recovery Check Valve

Core Differentiation:Exclusive for gas station vapor recovery systems, fully pure copper-made(unlike alloy/cast iron check valves) — resists fuel corrosion, conducts static electricity safely. The BSP1/2 size precisely matches vapor recovery pipelines, with high one-way sealing accuracy to ensure “vapor only recovers, no backflow”, avoiding leakage and cross-flow risks.

1. Material & Core Advantages
- Full Pure Copper Construction: Resists long-term corrosion from gasoline/diesel (no rust, avoiding impurity contamination in vapor recovery). Copper’s excellent electrostatic conductivity quickly discharges static from vapor flow, reducing explosion risks. Copper sealing components + oil-resistant rubber enable more reliable one-way sealing, with a lifespan 30% longer than ordinary alloy valves.

2. Key Parameters
- Specification: BSP1/2 (1/2-inch British standard pipe thread, matching gas station vapor recovery pipeline interfaces).
- Working Pressure: Suitable for low-pressure vapor recovery systems (typically 0–0.3 MPa, stable under actual conditions).
- Medium: Vapor from gasoline/diesel volatilization.
- Temperature Range: -20℃ ~ +60℃ (adapts to gas station day-night/seasonal temperature changes).

3. Working Principle, Application & Usage
- Principle & Operation: The copper valve core opens unidirectionally when vapor pressure drives it (along the “gas flow” arrow) during system operation; when the system stops, the core resets via gravity or spring force to seal, preventing vapor backflow.
- Application Scenarios: Suited for vapor recovery branches between gas station dispensers and underground tanks, branches of main vapor recovery pipelines, and small-scale vapor recovery setups in oil depots — ensuring one-way vapor flow and avoiding cross-flow or backflow.
- Usage:
1. Pre-installation: Confirm the pipeline interface is BSP1/2, clean off oil and impurities, and align the “gas flow direction” arrow with the actual vapor flow.
2. Installation: Opt for ferrule connection (insert the pipeline into the valve end, fit the copper ferrule, then tighten the hex nut moderately) or thread sealing (wrap oil-resistant tape around threads).
3. Maintenance: Inspect every 6 months by testing one-way on-off with slight pressurization; if the core jams, disassemble, rinse the core and valve cavity with clean kerosene, dry, and apply a small amount of oil-resistant grease to ensure smooth operation and reliable sealing.