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-   -   Proportion Valve leak (https://67-72chevytrucks.com/vboard/showthread.php?t=855288)

Blazerowner 10-26-2024 03:46 PM

Proportion Valve leak
 
1 Attachment(s)
The valve is leaking out of the small rubber seal on the rear outlet. This a new valve. Anyone know what would cause this and what this is for? The round seal right under the mounting bolt.

Accelo 10-26-2024 05:50 PM

Re: Proportion Valve leak
 
I went through three of them before I got one that didn't leak.
All are pretty much from the same company in China.

Blazerowner 10-26-2024 07:08 PM

Re: Proportion Valve leak
 
Weird. Might have to replace it.

PbFut 10-27-2024 07:20 AM

Re: Proportion Valve leak
 
I will second Accelo's comment. Find the correct PV on Amazon or other easy to return site and rotate till you get a good one. The expensive ones are just marked up. Not better.

Blazerowner 10-28-2024 10:11 PM

Re: Proportion Valve leak
 
Is there a U.S. made source? I was thinking of swapping to Wilwood for the valve but they seem to only have disc/drum for this style. I need 4 wheel disc.

RustyPile 10-28-2024 10:48 PM

Re: Proportion Valve leak
 
Quote:

Originally Posted by PbFut (Post 9349874)
I will second Accelo's comment. Find the correct PV on Amazon or other easy to return site and rotate till you get a good one. The expensive ones are just marked up. Not better.

Well said, Dan....

slikside 10-29-2024 01:03 AM

Re: Proportion Valve leak
 
I got an all brass disc/drum valve from ABS in Orange, CA and it was good on the first go...

MikeB 10-29-2024 09:44 PM

Re: Proportion Valve leak
 
I got one from Inline Tube and it has worked well for over a year. But it may be from the same Chinese source as all the others.

Still have my original 71/72 valve and may send it to a re-builder.


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