Multiport valve seal leaking. I've replaced it 6 times over the last 2 years.

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J

jargray2

0
Aug 1, 2017
5
Godfrey, IL
Hello,

I currently have my 7th leak from the O-Ring under my multiport valve. I just replaced this O-Ring seal about 1 week ago, and it's leaking again. I can usually get it to stop by pulling the multiport valve off, repositioning the O-Ring, and tightening it back down. I'm really looking for a more permanent fix though. It seems to happen when water gets restricted to the pump/filter. Today the pump was running, but the water was extremely low and the system was sucking air instead of water, and I found it leaking between the multiport valve and sand filter. The last time it sprung a leak was when one of the kids got something stuck in the skimmer which also seemed to block the flow of water and the pump was once again sucking air causing another leak. Is this normal? Do I just need to be more vigilant about keeping the pool full and stuff out of the skimmer? Any advice is greatly appreciated. Thanks in advance.

Jared
 
It's not normal for the multi-port to be leaking. Mine leaked after I changed gaskets as well. I ended up buying the entire top assembly and it fixed it. Maybe it was warped? However, are you putting any lube on the o-ring?
 
RussellC said:
It's not normal for the multi-port to be leaking. Mine leaked after I changed gaskets as well. I ended up buying the entire top assembly and it fixed it. Maybe it was warped? However, are you putting any lube on the o-ring?
Click to expand...

Yes, I put the Magic Lube or whatever it is at the pool store on with every O-Ring. I'm wondering if maybe the pressure is just getting too high when it's "sucking air" and that's causing the leak. That gasket looks fine though. No visible breakage.
 
What brand filter and valve do you have?
If it has a split collar clamp, it could be that the clamp is out of shape and that will allow the o-ring to deform and possibly leak.

P.S. Air in the pump/filter actually lowers the pressure. However the air could cause vibration and agitation enough to dislodge the o-ring and cause a leak, especially if the seal isn't pretty secure.
 

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