Fuel Tank Breather Valves as required by Motorsport UK and FIA regulations are either fitted to the top of the fuel tank or in-line in the Tank breather hose. They allow the air in to the tank to replace used fuel, air pressure caused by heat expansion to vent out of the tank, but prevent fuel venting from the tank even in the event of a roll. A range of sizes and mountings available to suit different sizes.
Please Note: All in-line valves must be mounted vertically