Thursday, September 12, 2013

How to Repair a Schedule-40 Irrigation Water Pipe

By Gary Boutin
Nitrile Glove

Supplies and Tools:
3/4-inch Schedule 40 union
Hacksaw with new blade
Ordinary sandpaper 120-grit
Pick axe for gardening
Red Hot (Blue glue) adhesive


I was called by a Mr. Applehumber in Santa Clarita, California. They were selling their home and moving up to Colorado. After the Realtor checked their beautiful home, she requested a huge laundry list of repairs. Jim wanted a dead bushed removed from his side yard by the driveway.

This post shows the fourteen steps to repair Schedule-40 irrigation pipe damaged from a pick axe removing dead bushes. 

Step 1: Fig.1 shows the pick axe cut a hole in the PVC pipe while the handyman was removing the dead bushes.
Fig.1 Damaging the pipe
Step 2: Fig.2 shows the pick axe and the hole at the bottom of the picture in the PVC pipe.
Fig.2 The hole
Step 3: Clean and wipe the irrigation water pipe as clean as possible and wipe it dry with a towel. Fig.3 shows a hacksaw cutting the schedule-40 pipe in half. Saw the pipe near the hole if possible
Fig.3 Saw the pipe
Step 4: Fig.4 shows the irrigation water being drained from this pipe. The adhesive will not be effective if the water is left in the irrigation pipe. Remember to wear gloves to protect your hands from the PVC adhesive.
Fig.4 Drain the pipe
Step 5: Fig.5 shows the two different types of unions, a 3/4 inch and a 1/2 inch union. This repair required the 3/4 union to fit the two pipes together.
Fig.5 - 3/4 and 1/2 union
Step 6: Fig.6 shows ordinary sandpaper sanding the outside of both sides of the schedule-40 irrigation pipe. 
Fig.6 sanding outside of pipe
Step 7: Fig.7 shows the sandpaper sanding one side of the union.
Fig.7 Sanding inside #1
Step 8: Fig.8 shows the same sandpaper sanding the other side of the union.
Fig.8 Sanding inside #2
Step 9: Fig.9 shows the Red Hot Blue Glue adhesive that will be used to glue the pipes together.
Fig.9 Red Hot Glue
Step 10: Fig.10 shows one of the unions was placed on the damaged pipe.
Fig.10 Union to Connect two pipes
Step 11: Fig.11 shows the adhesive is being placed on the pipe first and then onto the union. Immediately pull and push the pipe into the new union and hold onto the pipe so the adhesive welds the pipe together, making it waterproof.
Fig.11 Adding glue inside the union
Step 12: Fig.12 shows the pipe is repaired.
Fig.12 Put pipes together
Step 13: Fig.13 shows a long shot of the repaired pipe in the soil ready to be covered up.
Fig.13 Pipes together
Step 14: Fig.14 shows the bushes are removed and the pipe is no longer leaking.
Fig.14 Bury the pipes 
and level the soil


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Note: The DIY Advisor assumes no liability for omissions, errors or the outcome of any jobs. The reader must always exercise reasonable caution, follow current codes and regulations that may apply, and is urged to consult with a licensed contractor if in doubt about any steps on these posts. All names were changed to protect client's privacy. DIY Advisor. Reproduction of site content including photos without permission prohibited. All rights reserved. © Copyright 2011-

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