| Refueling Isolator valve [message #63219] |
Thu, 05 November 2009 11:39  |
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I was wondering if anyone knew of a company which makes a valve which would allow me to isolate my fuel tanks from each other and have them fuel and consume seporately? basically this could be a 1" vale I caqn plumb between the fill pipe and the main and aux tanks effectively isolating them I would like to fill my tanks seporately...
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: [GMCnet] Refueling Isolator valve [message #63221 is a reply to message #63219] |
Thu, 05 November 2009 11:45  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Shan,
What advantage would this provide??
Have you reviewed this information on the fuel tank layout?
http://gmcmotorhome.info/tank.html
J.R. Wright
>
>
> I was wondering if anyone knew of a company which makes a valve
> which would allow me to isolate my fuel tanks from each other and
> have them fuel and consume seporately? basically this could be a 1"
> vale I caqn plumb between the fill pipe and the main and aux tanks
> effectively isolating them I would like to fill my tanks seporately...
>
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Refueling Isolator valve [message #63227 is a reply to message #63219] |
Thu, 05 November 2009 12:10 |
GMC_LES
Messages: 569
Registered: October 2009
Location: Montreal
Karma: 0
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Senior Member |
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I have wondered the same thing, but then I came to realize that the factory
configuration is to our advantage. Since both tanks are interconnected, both
the engine and Genset have access to well over 1/2 the fuel capacity without
doing a thing. This is especially of benefit should the fuel selector valve
stop functioning while you are a long way from home.
In my situation, I will be installing 1 electric fuel pump per fuel tank and
removing the selector valve. I will be able run on either pump individually
or both pumps at the flip of a switch. This gives me a back-up pump should
one fail. By having the fuel tank filler pipes plumbed in the factory
configuration, both pumps will have access to well over half the fuel
capacity.
Les Burt
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Shan Rose
Sent: November 5, 2009 12:39 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Refueling Isolator valve
I was wondering if anyone knew of a company which makes a valve which would
allow me to isolate my fuel tanks from each other and have them fuel and
consume seporately? basically this could be a 1" vale I caqn plumb between
the fill pipe and the main and aux tanks effectively isolating them I would
like to fill my tanks seporately...
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Les Burt
Montreal
1975 Eleganza 26ft
A work in Progress
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| Re: [GMCnet] Refueling Isolator valve [message #63229 is a reply to message #63227] |
Thu, 05 November 2009 12:22 |
mlincoln
Messages: 107
Registered: August 2006
Location: Salt Lake City
Karma: 0
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Senior Member |
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That would be "Piper Aircraft Co" I believe ;- ).
Mike
>
> Subject: [GMCnet] Refueling Isolator valve
>
>
>
> I was wondering if anyone knew of a company which makes a valve
> which would
> allow me to isolate my fuel tanks from each other and have them fuel
> and
> consume seporately? basically this could be a 1" vale I caqn plumb
> between
> the fill pipe and the main and aux tanks effectively isolating them
> I would
> like to fill my tanks seporately...
>
>
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Mike
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| Re: Refueling Isolator valve [message #63285 is a reply to message #63219] |
Fri, 06 November 2009 11:00 |
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well part of my reason to isolate the tanks was I needed to see if I fixed the rear fuel tank float. so I just rigged a plug fo the aux tank out of a bottle cap and stuck it in the fuel pipe. 70.50 filled the rear tank with 23.5 gallons, it had a couple in it already, my tanks ae transfer flow 26.5 gal tanks. Im happy to say it does seem the rear gauge works, and its nice nice not to have to pay $150 to find this out.
still I would like to have a switchable means of isolating the tanks should I choose. so any info regarding a transfer valve would be greatly appreciated...
73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: Refueling Isolator valve [message #63290 is a reply to message #63285] |
Fri, 06 November 2009 12:07 |
jwillard
Messages: 118
Registered: May 2004
Location: Silver City, NM
Karma: 0
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Senior Member |
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I actually did this a while back and it works great. Here's what I did....
I went on line and found an aircraft surplus 1 1/4" slidevalve. They are not too hard to find actually. I already had the tanks out so I cut the Fuel Inlet pipe between the two tank outlets and inserted the slide valve. I then ordered a very small air cylinder for the actuator on the slide valve and used a solonoid valve with a toggle switch on the dash utilizing "Bag air".
I also moved the Onan fuel to a tee upstream of the fuel tank selector valve and installed a seperate electric pump for the engine (Carter) and the Onan (cheapie Autozone unit)
Proceedures...
When I stop for fuel, I flip the switch and both tanks fill normally. I then close the valve and now the tanks are isolated.
What this accomplished...
The gauge now really tells me something. I don't drive for hours with little or no gauge movement then it falls like my stock portfolio. No more "cross filling" on up and down grades etc. The Onan and the engine run from the same tank. I can keep a "reserve" by switching tanks at say a quarter tank. I usually run on the front tank first so if I stop for fuel, it fills that one without using the valve.
What I'd do differently...
Originally I didn't wire the switch to an always hot power source.
I didn't put an idiot light on it... yet.
I used a one way air cylinder and relied on a spring to close it. It doens't always close and I sometimes need to lay on the gound and "help it" close. A 2 way cyl would solve the problem.
Thats what I did. I thought I had pics but I can't find them right now
Jeff Willard
Silver City, NM
1973 ex-Glacier
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| Re: Refueling Isolator valve [message #63329 is a reply to message #63290] |
Fri, 06 November 2009 20:21 |
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If you can find the pix I'd love to see, I found this company
http://www.ascovalve.com/Applications/Products/Products.aspx
they make all kinds of solenoid valves, they have ones for diesel, so I assume that could be adapted to gasoline use as well. I will email them and ask them if they make a specific gasoline valve. they are not all that expensive, about 30-50 bux from what I have seen...
| jwillard wrote on Fri, 06 November 2009 12:07 |
I actually did this a while back and it works great. Here's what I did....
I went on line and found an aircraft surplus 1 1/4" slidevalve. They are not too hard to find actually. I already had the tanks out so I cut the Fuel Inlet pipe between the two tank outlets and inserted the slide valve. I then ordered a very small air cylinder for the actuator on the slide valve and used a solonoid valve with a toggle switch on the dash utilizing "Bag air".
I also moved the Onan fuel to a tee upstream of the fuel tank selector valve and installed a seperate electric pump for the engine (Carter) and the Onan (cheapie Autozone unit)
Proceedures...
When I stop for fuel, I flip the switch and both tanks fill normally. I then close the valve and now the tanks are isolated.
What this accomplished...
The gauge now really tells me something. I don't drive for hours with little or no gauge movement then it falls like my stock portfolio. No more "cross filling" on up and down grades etc. The Onan and the engine run from the same tank. I can keep a "reserve" by switching tanks at say a quarter tank. I usually run on the front tank first so if I stop for fuel, it fills that one without using the valve.
What I'd do differently...
Originally I didn't wire the switch to an always hot power source.
I didn't put an idiot light on it... yet.
I used a one way air cylinder and relied on a spring to close it. It doens't always close and I sometimes need to lay on the gound and "help it" close. A 2 way cyl would solve the problem.
Thats what I did. I thought I had pics but I can't find them right now
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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| Re: Refueling Isolator valve [message #63355 is a reply to message #63329] |
Sat, 07 November 2009 09:47 |
jwillard
Messages: 118
Registered: May 2004
Location: Silver City, NM
Karma: 0
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Senior Member |
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I'll keep looking but I can't find any pictures of my install. I know I took a bunch when I was putting it together but I can't locate them.
Those valves from that outfit look plenty cool but I'll bet they're pricy. The other issue is size. If you've never taken the fuel tanks out you can't imagine how tight things are up there. The amount of "stuff" inside that frame rail is amazing. Brake lines, wirings, fuel vent hoses and large fill pipe.
I went on ebay and found this...
http://cgi.ebay.com/ebaymotors/DC-9-Aircraft-Fuel-Check-Valve-Gladden-P-N-416090-1_W0QQcmdZViewItemQQhashZitem4ceb5c32dfQQitemZ330366202591QQptZMotors Q5fAviationQ5fPartsQ5fGear
I can't tell sizes from the picture though. My valve had similar flanges on the ends and used O-rings to seal them. I made steel plates with hose nipples for the fuel pipe. Then installed it with chunks of hose and clamps so i could rotate it to make it fit inside the framerail. This valuse looks like a rotary type and mine was a slide gate type. The actuator mechninsium was fairly flat and stuck out from the side about 4 inches and had a lever that a cable would connect too. I removed the lever and connected it to the Air Cylinder.
Jeff Willard
Silver City, NM
1973 ex-Glacier
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| Re: Refueling Isolator valve [message #63565 is a reply to message #63355] |
Mon, 09 November 2009 11:07 |
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yeah Ive had the joy of removing the tanks, hell I did it in a parking lot of a vacant commercial building. I know stuff is tight up there. I was actually thinking of installing the valve in the space between the aux fill and fuel pipe. my fuel pipe was eplaced by the PO with copper pipe. and the tanks are larger after market tanks, but they are the ones cinnabar sells. I would like one of those normally closed valves, so when I wanna fill the aux tank I just flip a switch and pump gas, then shut it off again to isolate it. it does help alot with the fuel tank gauge giving a more accurate reading...
| jwillard wrote on Sat, 07 November 2009 09:47 |
I'll keep looking but I can't find any pictures of my install. I know I took a bunch when I was putting it together but I can't locate them.
Those valves from that outfit look plenty cool but I'll bet they're pricy. The other issue is size. If you've never taken the fuel tanks out you can't imagine how tight things are up there. The amount of "stuff" inside that frame rail is amazing. Brake lines, wirings, fuel vent hoses and large fill pipe.
I went on ebay and found this...
http://cgi.ebay.com/ebaymotors/DC-9-Aircraft-Fuel-Check-Valve-Gladden-P-N-416090-1_W0QQcmdZViewItemQQhashZitem4ceb5c32dfQQitemZ330366202591QQptZMotors Q5fAviationQ5fPartsQ5fGear
I can't tell sizes from the picture though. My valve had similar flanges on the ends and used O-rings to seal them. I made steel plates with hose nipples for the fuel pipe. Then installed it with chunks of hose and clamps so i could rotate it to make it fit inside the framerail. This valuse looks like a rotary type and mine was a slide gate type. The actuator mechninsium was fairly flat and stuck out from the side about 4 inches and had a lever that a cable would connect too. I removed the lever and connected it to the Air Cylinder.
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73 Canyon Lands, (a.k.a. The Yellow Submarine) West Los Angeles CA
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