Leaking PVC Threaded Joint: Proper Repair with Telescoping Coupling

Fixing a Bad Glue Joint at Valve Connection

PVC pipe glued to threaded adapter at main shutoff valve leaks due to poor original glue job. Sealants and epoxy putty failed.

Correct Repair Procedure

1. Cut out the failed joint — remove threaded adapter and short pipe section
2. Install new threaded adapter with PTFE tape on threads (3-4 wraps)
3. Use a telescoping coupling (slip-fix) to bridge the gap without needing exact pipe length
4. Glue telescoping coupling with primer and cement per manufacturer instructions

Parts Sourcing

Telescoping coupling / slip-fix available at:

• Lowe's / Home Depot (irrigation section)
• Local irrigation supply (Ewing, Horizon, SiteOne)
• Plumbing supply houses

Don't cut more pipe than the telescoping coupling's adjustment range (typically 2-4 inches). Measure twice, cut once.