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How to Repair Fittings for a PVC Sprinkler Pipe

PVC pipe is used extensively in home irrigation systems because it's durable and watertight. The fittings on PVC pipe must be glued in place using a special PVC cement that bonds the plastic together permanently. This cement makes for a strong connection, but it also means you must remove the fitting entirely to replace a damaged fitting. Fittings range from 90-degree bends to T-fittings and couplers. The process for cutting these pieces out and replacing them with new ones is the same for all types of PVC fittings.

Things You'll Need

  • Marker
  • Hacksaw
  • Sandpaper
  • PVC couplers
  • PVC primer
  • PVC cement
  • 2-foot section of PVC pipe (or longer)
  • PVC fittings (same type being replaced)
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Instructions

    • 1

      Draw two marks along the sprinkler pipe that are 5 inches away from either end of the damaged fitting. Measure from the end of the fitting.

    • 2

      Cut the pipe on both of the marks you made. Make sure to keep your saw as straight as possible when cutting PVC pipe.

    • 3

      Pull out the damaged fitting.

    • 4

      Clean the edges of the cut pipe by rubbing sandpaper over the edges until smooth.

    • 5

      Apply a thin layer of PVC primer to the inside of both ends of two couplers. Wait 30 seconds and then apply a thin layer of PVC cement to the inside of both ends of both couplers.

    • 6

      Turn off the main water line by turning the ball valve along the main water supply pipe. The valve is often located inside a basement or utility panel in a crawl space.

    • 7

      Press one end of the first coupler onto one end of the cut pipe where you removed the fitting. Press one end of the second coupler onto the end of the other exposed pipe.

    • 8

      Cut two, 2-inch sections of PVC pipe.

    • 9

      Press each of the small sections of pipe into the other ends of the two couplers that you just installed. You should now have two small sections of pipe a few inches away from each other.

    • 10

      Apply PVC primer and cement to the ends of the small pipe sections.

    • 11

      Press a new PVC fitting that matches the type you removed onto the two small sections of pipe. Allow the completed connection to sit for at least 6 hours before turning the water back on.