Hi, I have a hayward multiport with a small crack just above the threaded return on the multiport. The crack drips extremely slowly at slow speeds, and drips slowly even at faster speeds. I was looking for advise on what product I can use to seal it with. I'm thinking a liquid epoxy is best. I haven't had great success with polyurethane in pressurized systems. I don't think I can consider it pressurized though, considering it takes a few seconds to drip. I will try to post a pic. The hairline crack is less than 3/4" in length, and is an inch or more away from the end of the threaded connection.
Hayward SPX0710X32 Side Mount Valve for S200 Sand Filter Valve | eBay
This is a listing of the product, the crack is below the warning sign. Thanks