Click to expand Tap to zoom One Way Fuel Tank Check Valve 1/4" by Hot Products Save Liquid error (product-badge line 32): Computation results in '-Infinity'% $6.95 SKU CV-14B 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Replacement 1/4" barb one way fuel tank check valve. One way vent valve allows air flow to travel in one direction only.