JEGS One-Way Check Valves will prevent the flow back of fuel, coolant or oil. The PTFE® flapper is designed to operate and last longer in the harshest environments with minimal flow restriction. Compatible with most fuels (including alcohol, methanol and bio-diesels), coolants and oils.
Less restrictive hinged flapper design with PTFE® flapper and double coiled stainless steel torsion spring
Internal leakage less than 1 D.P.M. (drip per minute)