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Most of this can be done easly by someone with basic knowledge. But will need some mechanical knoledge to finish. I did this and it worked. Useing "thermos bottle" stoppers the kind with a trigger to open and close. I put one in each outlet or discharge into the pool (take off the nozzeles) And seal-off the pressure side of the filter, I have a union so I used the same stopper. Now it gets more involved. At the filter I drilled a hole and tapped it to fit a schrader valve, like on some bicycle tires. Use a hand air pump and pump about 5# psi and check all the outlets for leaks tighten stoppers if you find any. The pressure on my filter is about 8# psi. Leave it set for awhile and see if the pressure has dropped. I did the same on the suction side. I pluged the hole in the skimmer and bottom drain. I would not go over the running pressue of the pump. Be very careful and good luck.

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Q: How do you pressure check your underground pool lines?
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