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Re: [FOT] redundant fuel pumps and check valves

To: "Scott Janzen" <>
Subject: Re: [FOT] redundant fuel pumps and check valves
From: Bill Babcock <>
Date: Mon, 6 Nov 2006 08:05:29 -0800
Especially since you would really need two of them.  It depends on  
your fuel pump. If you use the diaphragm type, they already have a  
check valve in them, if you use rotary ones then put a fuel pressure  
regulator at the outlet of each pump--they are effective check  
valves, or at least big flow restrictions when their associated pump  
is off. You have the added benefit of a spare regulator and the  
ability to change fuel pressure right from the cockpit for testing-- 
set one high and one low. even the good Holley regulators (the ones  
that have a allen screw pressure adjustment) are reasonably priced--I  
think about $30. You can even avoid plumbing a T is you get one dual  
outlet one--just add a cross-connect pipe.

On Nov 5, 2006, at 6:31 PM, Scott Janzen wrote:

> I am installing a Fram HPG1 fuel filter, and while I am at it I was
> contemplating installing a standby fuel pump with associated  
> plumbing and
> check valves.  I was stopped in my tracks by the $89 (each) fuel  
> check valves
> in Pegasus.  Is there another alternative?  Perhaps I should just  
> drift to a
> stop when/if my fuel pump quits.  Plumbing fittings and two check  
> valves make
> this nearly a $300 idea, plus the fuel pump.
> ===  Help keep Team.Net on the air
> ===

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