Package Included:1 piece x Check Valve

NOTE: Check valves do not create a 100% seal against backflow like a ball valve would. If prevention of backflow is desired, two check valves should be used in

series with each other. Any fluid which finds its way past the first check valve is unlikely to have enough pressure to pass through the 2nd.

For use with biodiesel, this check valve will require changing of the NBR seals to a more resistant seal

manufactures pipe nipples following ISO 9001 standards for quality assurance. The company distributes pipe fittings in the United States and Canada.