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Cartravel · 04-15-2014, 02:57 PM

The use of a return line is an excellent idea.

I think there is some confusion in terminology in this discussion. A "check valve" is a valve that allows flow in only one direction. A "pressure relief valve" is a valve that maintains a specific pressure. You cannot set a check valve at a specific pressure, e.g. 2 1/2 psi. A pressure relief valve with a return line would work in place of the needle valve and would be an improvement IMO. expavr already mentioned that one is available.

04-15-2014, 02:57 PM	#53
Cartravel Senior Member Join Date: May 2010 Location: Larry Young, Tulsa, OK Posts: 202	Re: Vapor lock 1 and 2 The use of a return line is an excellent idea. I think there is some confusion in terminology in this discussion. A "check valve" is a valve that allows flow in only one direction. A "pressure relief valve" is a valve that maintains a specific pressure. You cannot set a check valve at a specific pressure, e.g. 2 1/2 psi. A pressure relief valve with a return line would work in place of the needle valve and would be an improvement IMO. expavr already mentioned that one is available.