I need to modify my fuel system to install a new all métal gascolator in a

new
location.

I find that my two one way valves are taking up too much space.
Are one way valves necessary with inline 18 psi fuel pumps? The pumps and one

way valves are

installed in parallel.
Yvon.

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Hi Yvon;

In Fluid Control systems these are known as "Check Valves" their purpose is to
hold or prevent the fluid on reverse flow. In other words once the fluid flows
thru the valve it can not go back through it. So in order to answer your
question of whether they are necessary or not a sketch of your fuel system
(schematic) is needed.
                                                    Butch

  I am currently working on my fuel system and the same thing crossed my mind as the positive
displacement pumps wont allow to backup through them I don't think they would be needed.
 I am running two pumps parallel with a pickup in the tank for each pump and the pumps tee
together into one line that goes to the carb.
 Ken Welter

 
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