Author Topic: Detailed dimensions of all o-rings in the CSV1A valve  (Read 88 times)

pzinser

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Detailed dimensions of all o-rings in the CSV1A valve
« on: July 09, 2024, 12:14:52 PM »
I encountered a torn o-ring (the smaller one just below the “windows” in the plastic).  I could not find any details on exactly what size o-ring is needed.

Apparently, it would be ideal to have the outside diameter, OD, inside diameter, ID, and cross-sectional dimension, CS. (See attached image)

I measured the torn o-ring, and then discovered absolutely no one (5 shops visited) in town had that size.  I know I can order them from CSV (and they actually DID put some in the mail to me which I TRULY APPRECIATE) but I really needed an immediate solution because my pump was cycling in 20 second increments every time the 4.4 gal tank “dumped”.  No one locally carries a 1/16” thickness (CS or cross-section) ring, which I believe is what’s needed.  The “thicker” rings that everyone seemed to have will not allow the red valve housing to seat all the way, and thus it leaks continuously.
 I wound up taking a scalpel to the closest-sized one I could find to “thin” it down – I could not believe that this worked (for now) because the result was so ragged, but I never want to do it again.    ;D

Long story short, could someone post the EXACT dimensions on ALL the o-rings in this valve. With this info. I’m hoping I can get someone locally to stock them for emergencies.

Thank for your help!

Phil Zinser

Cary Austin

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Re: Detailed dimensions of all o-rings in the CSV1A valve
« Reply #1 on: July 09, 2024, 07:08:16 PM »
Sorry for your problem. But that is the first time in 30+ years that an o-ring has been the cause of a CSV failure. Like you saw it smashed in when it was too big, it is squeezed into a slot and should nor be able to move, break, or get out in anyway.  We buy them from a local bearing and seal company right off the shelf.  See if I can look it up. But would have been posted years ago if there had been a problem.

pzinser

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Re: Detailed dimensions of all o-rings in the CSV1A valve
« Reply #2 on: July 10, 2024, 10:47:53 AM »
Could you please attach a picture of exactly where the o-rings should sit on the plastic body body with the "window".  A pic would be EXTREMELY helpful – the repair kit for this valve has a photo on its order page, but it only shows the o-rings below the valve piece, not ON the valve piece.  Presently, I have my "for now" working fix o-ring rolled right up to the bottom of the "windows" and it does not at all seem to be sitting in a slot or a recessed area.

This past Saturday or Sunday, when I took the red housing off the valve assembly I did note that the internal valve piece did not at all lift right out – it seemed “held back” by something and after “pumping” it up and down several times it finally popped-out – it was then that I saw the small torn o-ring left behind sitting in the metal housing. 

After I placed my “altered” o-ring,  the entire internal assembly EASILY slides in and out of the metal housing with no hindrance in either direction – is that the way it “should” be?  If “yes”, perhaps the o-ring failed for unknown reasons and lodged to the side of the internal assembly when I first tried to remove it, creating the hindrance(??).

In any case, I AM very grateful for all your time and help AND for the replacement o-rings you have sent to me.

If you could find out the detailed dimensions of all o-rings on the internal assembly, and post them, it would be great.  After searching locally and coming up empty I just want to compare what I could and could not find locally to what the “right size” is.

Thank you again.

Phil Zinser

Cary Austin

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Re: Detailed dimensions of all o-rings in the CSV1A valve
« Reply #3 on: July 10, 2024, 01:07:55 PM »
Here is a link to the parts break down.  Have to get my tech guy to find o-ring sizes.

https://cyclestopvalves.com/pages/csv1a-parts-breakdown