The Mocal Quick Refuelling Female Valve range provides a solution to rapid pitlane fuel refilling in longer distance or endurance racing.The Female Valves are manufactured from lightweight alloy, providing weight reductions without sacrificing quality or longevity. The valves also contain fully floating splindles, which allow the units to supply a smooth action and avoid sticking, vital under competitive pitstop scenarios. The female valves are available in either single or double (joined) configurations for universal type installations, and a 50 x 1.5mm neck widely used on Caterham cells.QF250 - 57mm hose tail, 100mm centreQFR252 - 57mm hose tails, 100mm centresQFF250C - 50 x 1.5mm hose tail (widely used on Caterham cells)