I have a ball valve that used to go to a drain/waste line, but that line had a leak in it underground that actually damaged our pool several years ago. (The line was shared with house sump pump which did the damage.) So we never use it anymore, and always keep the valve closed.
For the last 5+ years this valve has leaked VERY slowly (~10 drops / minute), and often only at the beginning of the season. But suddenly in the past week it has started leaking much faster so I need to fix it. Picture:

The connected line used to go underground, but is now just open above-ground as you can see at the far right below. The water trickles out the line, not out the valve handle or anything.

I'm wondering if I can just get a PVC cap like this 1.5 inch FPT cap and attach it somewhere? Or is there a better way to repair this? Sorry I am a complete newbie when it comes to pool plumbing so I have no idea how these fittings work.
(But I am also thinking a cap may be good for another reason -- a complete failure of a valve could end up flooding my basement with all the water that would pour out so near my house.)
EDIT: another question, as a temp fix, do you think I could slow the trickle by playing with how far I close it? Like if I back off a tiny bit from fully closed or something like that?
For the last 5+ years this valve has leaked VERY slowly (~10 drops / minute), and often only at the beginning of the season. But suddenly in the past week it has started leaking much faster so I need to fix it. Picture:

The connected line used to go underground, but is now just open above-ground as you can see at the far right below. The water trickles out the line, not out the valve handle or anything.

I'm wondering if I can just get a PVC cap like this 1.5 inch FPT cap and attach it somewhere? Or is there a better way to repair this? Sorry I am a complete newbie when it comes to pool plumbing so I have no idea how these fittings work.
(But I am also thinking a cap may be good for another reason -- a complete failure of a valve could end up flooding my basement with all the water that would pour out so near my house.)
EDIT: another question, as a temp fix, do you think I could slow the trickle by playing with how far I close it? Like if I back off a tiny bit from fully closed or something like that?
Last edited: