Sand Filter Problem

[crokett]

I don’t think there’s a fix for this except to replace it. I leave the drain cap off the sand filter in the winter. I learned the hard way if I don’t water can freeze and crack the laterals. Yesterday the cap wasn’t going on straight. I was still filling the pool and figured I was just cross threading it. Looking at it today something gnawed at the threads. I don’t see a way to fix this except for replacing the filter.

 

[JamesW]

Maybe cut it flush.

 

[Texas Splash]

That would be a challenge for me. Like James suggested, carefully cut/grind the bad thread/tip off and you may still have enough remaining threads for the cap to "bite" and hold on to. It looks like you may still have hope IMO.

 

[Texas Splash]

 

[crokett]

It’s fixed. I cut it off as squarely as I could then filed it the rest of the way. I then used 3 layers of rubber tape as a seal inside the cap so it isn’t leaking any longer.

 

[Texas Splash]

 

[crokett]

It’s fixed. I cut it off as squarely as I could then filed it the rest of the way. I then used 3 layers of rubber tape as a seal inside the cap so it isn’t leaking any longer.

Well I lied. It wasn't leaking until I turned the pump on. It leaks under pressure. I will try one more layer of tape inside the cap but I am not hopeful. I am also strongly considering just filling the drain with silicone sealant.

 

[Texas Splash]

Maybe an additional washer in the cap? With a slightly shorter nipple, it may not be long enough to press tightly against the single washer in the cap.

 

[crokett]

I built a new seal with another layer of rubber tape and it seems to be holding.