Repair Sprinkler Funny/Swing Pipe
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What is Funny Pipe?
Funny pipe, or swing pipe, is a small flexible pipe that's used to allow flexibility with installing sprinkler heads and other small parts of a sprinkler system. using funny pipe off of a lateral line allows you to have flexibility to ensure that your sprinkler heads are sitting level and at the right height in the ground.
Connections
Funny pipe is connected using a spiral barb fitting. The typical connection for a funny pipe is a spiral barb fitting on one end with a threaded end for a sprinkler head or the PVC connection. The spiral barb fittings are very tight, and simply press onto the pipe. The barb end is tight enough that it shouldn't leak or slip off. No hose clamps on spiral barb fittings are needed, though you should still use pipe thread seal tape on the threaded ends. To connect a fitting to the pipe, take the fitting. Press the fitting directly into the end of the pipe as far as you can. Twist and press the fitting into the end of the pipe until no more barbs are visible. No hose clamps are needed.
Causes and Finding Problems
If you think you need to repair a section of the funny pipe, you can usually find a wet spot in the ground where the water has leaked from the pipe and caused the dirt to become water saturated and muddy. If the pipe is exposed,, it's usually easy to see a leak coming from the pipe when the system is pressurized. Funny pipe can be easily cut or punctured by shovels or sharp objects, and the pipe can crimp on itself and cut off water flow when bent too far. If you have a problem with a section of your funny pipe,, it's best to replace that entire section of funny pipe rather than try to patch it. This means removing or replacing the fittings from the broken funny pipe, cutting another section of funny pipe, reinstalling the fittings, and finally replacing the funny pipe where it was before, and burying it again.
Where is Funny Pipe Used?
Funny pipe is used to connect sprinkler heads to lateral lines, and generally shouldn't be run longer than 1 or 2 feet. So make sure your system is using PVC or Poly pipe for longer Pipe runs.
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