Breather, Vent & Rollover Valves

Breathers, vent valves, and rollover valves are crucial components in motorsport vehicles, designed to ensure safe and efficient fuel system operation. Breathers allow for the release of excess pressure from the fuel tank, preventing deformation or damage while maintaining a sealed environment to minimise fuel evaporation and contamination. Typically constructed from high-strength, corrosion-resistant materials like anodised aluminium or stainless steel, breathers are designed to withstand the harsh conditions of motorsport racing.

Vent valves control the flow of air in and out of the fuel tank, ensuring that the tank remains at atmospheric pressure as fuel levels change. These valves prevent vacuum lock and ensure consistent fuel delivery to the engine. Advanced vent valves are equipped with pressure and vacuum relief settings, allowing them to respond accurately to changes in tank pressure. The use of high-quality materials and precision engineering ensures that these valves function reliably under high-pressure and high-temperature conditions typical in motorsport environments.

Rollover valves are safety devices designed to prevent fuel leakage in the event of a vehicle rollover. These valves automatically close when the vehicle is inverted, stopping fuel from escaping through the breather or vent lines. Constructed from robust materials such as stainless steel or high-grade polymers, rollover valves are designed to operate reliably under extreme conditions. They incorporate a gravity-actuated mechanism that ensures immediate response in the event of a rollover.

Integration of breathers, vent valves, and rollover valves into the fuel system is critical for maintaining safety and performance in motorsport vehicles. These components are connected using high-quality fittings and hoses to ensure leak-free operation. The precise design and engineering of these parts ensure that the fuel system remains pressurised correctly and safe, even under the most demanding racing conditions, thereby preventing fuel spills and ensuring consistent engine performance.