Leaking Pentair UV - leaking from multiple spots

[Camaro Show Corals]

Hey all,

Anyone ever deal with a leaking Pentair UV? Leaking from where the JB weld is and the union. Tried doing a layer of pvc cement on the top and JB weld over it. Have plumbers tape on the threads for the union but still leaking. Have the union as tight as possible and says to hand tighten.

 

[Ocellaris123]

Hows the gasket on the union look? Teflon on the union wont do anything, the seal is made from the o ring/gasket

 

[gms1234]

post photo of the inside of the union where the faces meet.

 

[mcarroll]

Yeah I think you're missing the o-ring/gasket. The other option is the ring it cracked, but I think you'd have noticed that.

 

[Camaro Show Corals]

 

[gms1234]

I would get rid of that stuff you put on outside and the teflon tape. Give the sealing surface a good wipe down (left image). Pull out the o ring (right image), give it a good wipe too + surrounding area. If oring isnt soft, replace it. You can use some reef safe grease or similar on the o ring to get it to tighten up nice. Just needs to be hand tight, no tools needed. Soft cloths only, i.e microfibre

 

[RoanokeReef]

Hope you answered everyone you ghosted for months.

 

[mcarroll]

Looks like PVC glue in the O-ring seal.

Even if it's not on the O-ring (which might be cleanable and is replaceable) that might be enough to prevent a good seal from happening.

Can you remove the O-ring and scrape off the PVC cement from the rest of the fitting? (...with a razor blade if it needs extra persuading.)