1" Compression Coupling: Fast Pipe Repairs Without Glue
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The EZ-FLO 1" compression coupling joins two pipe ends using nuts and sealing rings, so you can repair a 1" line without glue, heat or cure time. Cut out the damage, slide on the coupling and tighten both nuts.
When a 1" water line cracks, you don't always have the time, space or dry conditions for solvent cement. The EZ-FLO 1" compression coupling (#20587) joins two pipe ends mechanically, so you can repair a line quickly, even in a tight trench.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Compression coupling |
| Size | 1" |
| Brand / model | EZ-FLO #20587 |
| Joining method | Mechanical compression (no glue) |
| Best for | Repairs, wet conditions, removable joints |
How a compression coupling works
The coupling has a body, two compression nuts and sealing rings. Tightening each nut squeezes its ring against the pipe, making a watertight seal without glue, solder or special tools.
Best uses
- Emergency repairs on cracked or split pipe
- Joining pipe where a glued joint is hard to make
- Wet conditions, where solvent cement won't bond well
- Temporary connections you may want to take apart later
How to install
- Shut off the water and drain the line.
- Cut out the damaged section with square, clean cuts.
- Slide a nut and sealing ring onto each pipe end.
- Push the coupling body over both ends, centring it over the gap.
- Hand-tighten the nuts, then snug them with a wrench. Don't over-tighten.
- Turn the water on slowly and check for drips. Tighten a little more if needed.
Tips for a lasting repair
- Make sure the pipe size matches the coupling: measure the outside diameter.
- Keep the pipe ends clean and free of sand and grit.
- Support the pipe on both sides so the joint isn't carrying the load.
Keep one on hand
A compression coupling is one of the most useful parts to keep in a home or site toolbox. Maintenance Depot also stocks the 2" size for larger lines.
Frequently asked questions
Can a compression coupling be buried?
Yes, many are buried on water lines, but make sure the nuts are tightened properly and the pipe is well supported before backfilling.
Does a compression coupling need thread tape?
No. The compression ring seals against the pipe; tape is not needed on the nuts.
Can I reuse a compression coupling?
Often yes, though replacing the sealing rings is recommended for a reliable seal.
Buy 1" Compression Coupling EZ-FLO #20587 at Maintenance Depot