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These Summit® one-way check valves are designed to prevent the back flow of any fuel, coolant, or oils. Their flapper design provides minimal flow restriction, and the high-quality construction of the Summit® one-way check valves ensures long-lasting performance. Their PTFE flapper requires a low 2 psi to lift off of the seat and is resistant to alcohol, methanol, and bio-diesel fuels. These check valves are offered in a choice of sizes to suit your needs.
