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DieselAutoPower.com
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Discussion Starter · #1 ·
I need a fuel pressure regulator with a bypass return to tank. Need it to run 15-20psi. It's for a second tank setup I'm putting together for WVO.
 

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4,669 Posts
I hope somebody chimes in because i need a stronger pump on my wvo system too.My walbro (fr) series isnt putting out nearly enough psi. only 3-4 at idle and 0 when just driving, it runs at 0 but if going up a long steady incline or if i get on it too long it cuts out , need more fuel!
 

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Tech Specialist
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725 Posts
Check with Vulcan Performance, they carry an inline bypass regulator that can be adjusted from 15-20 psi. Hope this helps.
:thumbsup
 

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DieselAutoPower.com
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6,699 Posts
Discussion Starter · #4 ·
Ahh I see what they have, but can someone explain to me the flow?

(Image stole from Vulcan's site)


Is the input through the black section? How does the T work in the pic?
 

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Premium Member
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638 Posts
It looks like the black leg would be the retrun to me. The top Tee looks like an ordinary plumbing Tee.
 

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Tech Specialist
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The Tee is spliced into the supply line that runs from your fuel pump to the injector pump. Any excess pressure beyond the 15-20 psi that the valve is set for, will "bypass" the valve in the black section and RETURN (to the left) back to the fuel tank. The hose barb on the left side of the black section is the "output" that is only functional when the pressure exceeds the set valve pressure. Hope this clears things up a bit.
:thumbsup
 

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DieselAutoPower.com
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6,699 Posts
Discussion Starter · #8 ·
The Tee is spliced into the supply line that runs from your fuel pump to the injector pump. Any excess pressure beyond the 15-20 psi that the valve is set for, will "bypass" the valve in the black section and RETURN (to the left) back to the fuel tank. Hope this clears things up a bit.
:thumbsup
Ahhh! that makes sense now! Thanks, guess I'll be giving them a call tomorrow.
 

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You want a aeromotive bypass regulator A1000 there also boost sensitve if u want to hook that up but really no sence,,, any 150 GPH pump should supply enogh fuel that you can set the regulator to say 20 and it shoulld never move , thats how mine is
 

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DieselAutoPower.com
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6,699 Posts
Discussion Starter · #13 ·
You want a aeromotive bypass regulator A1000 there also boost sensitve if u want to hook that up but really no sence,,, any 150 GPH pump should supply enogh fuel that you can set the regulator to say 20 and it shoulld never move , thats how mine is
I don't care about boost, this isn't for the main diesel fuel system. This is for my WVO setup I'm building. I've got a mallory gerotor pump that puts out about 40psi. I want to back that down to about 15-20psi. I also want the WVO to be drawn through the pump and fuel filters, then bypassed back to the holding tank again. Basically filtering over and over again. Now that I understand the vulcan setup, that'll suit my needs perfectly.
 
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