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  #1  
Old 10-27-2019, 08:32 PM
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Question O-ring sizes for Van's fuel valve?

Hi VAF,

Anybody know the two o-ring sizes for the newer "delrin cone" Vans fuel valve? Would like to order those pre-disassembly.

Thanks for the help!
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  #2  
Old 11-01-2019, 02:39 PM
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For future reference, it appears the "newer style" Van's fuel valve has two o-rings. The one I looked at appeared to use a size 011 on the shaft seal and a 018 on the housing seal.
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  #3  
Old 11-08-2019, 08:40 PM
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Default Fuel selector valve service ó help needed

Quote:
Originally Posted by digidocs View Post
For future reference, it appears the "newer style" Van's fuel valve has two o-rings. The one I looked at appeared to use a size 011 on the shaft seal and a 018 on the housing seal.
Very timely as I am disassembling the stock (4-port) valve in my RV6 to address a small leak at the stem and increasingly stiff operation. New o-rings are planned.

I donít know that I have it fully apart yet, but so far have only found one small o-ring at the top of the shaft, just below the large nut below the handle. I assume this one is the 011.

Below the handle and large nut I have removed a washer, a spring, washer like ring at the bottom of the spring, and a larger disc. The now bare shaft is still in place and I havenít found a second o-ring. I assume I have more disassembly to go ...

Any help to remove the shaft appreciated ...

Thanks,
Peter
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  #4  
Old 11-09-2019, 10:34 AM
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Peter,

On the valve I looked at, the second o-ring just forms a static seal between the top and bottom of the housing.

Hope that helps.
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  #5  
Old 11-09-2019, 08:29 PM
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Quote:
Originally Posted by digidocs View Post
Peter,

On the valve I looked at, the second o-ring just forms a static seal between the top and bottom of the housing.

Hope that helps.
Yeah, it looks like the inside of the housing, below the cap nut is shaped to hold an o-ring (roughly 3/4Ē in diameter) but my valve just had (a substantial quantity) of fuel resistant grease there.

Anybody have pictures of the inside of the 4 port valve ?

Thanks for any pointers.
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  #6  
Old 11-10-2019, 01:23 PM
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Quote:
Originally Posted by pjc View Post
Very timely as I am disassembling the stock (4-port) valve in my RV6 to address a small leak at the stem and increasingly stiff operation. New o-rings are planned.

I donít know that I have it fully apart yet, but so far have only found one small o-ring at the top of the shaft, just below the large nut below the handle. I assume this one is the 011.

Below the handle and large nut I have removed a washer, a spring, washer like ring at the bottom of the spring, and a larger disc. The now bare shaft is still in place and I havenít found a second o-ring. I assume I have more disassembly to go ...

Any help to remove the shaft appreciated ...

Thanks,
Peter
Place the handle back on the shaft and replace the screw hand tight.

Now grab the handle and pull up the shaft along with the cone.

There is an o ring on the shaft as it passes through the nut. And a second one that seals the nut to the body.
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  #7  
Old 11-10-2019, 07:07 PM
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Quote:
Originally Posted by gasman View Post
Place the handle back on the shaft and replace the screw hand tight.

Now grab the handle and pull up the shaft along with the cone.

There is an o ring on the shaft as it passes through the nut. And a second one that seals the nut to the body.
Very helpful, thanks. Iíll take the next step to remove the shaft and cone. The o-ring on the shaft as it passes thru the nut has been recovered. The second is not in evidence ó- perhaps thatís why it was leaking.

Peter
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