JasonY
New Member
The street water pressure is 110 psi, and I then installed the PRV, gauges, and expansion tank with the help from this forum. Part of the design is to branch off from the incoming water pipe before the PRV, so that I can feed the outside spigot with high (street) pressure. See the picture below.
Upon finishing installing it, the main branch (going to PRV) is functioning as designed. However, when I open the outside spigot, I got a bad pulsating of water flow. I used a Tee (3/4x3/4x1/2) for the branch off, see picture. the pipe is reduced to 1/2 for the outside spigot. I think the problem is when outside spigot opens, it somehow created a low pressure at the Tee, and water back flowed from the branch that feeds the PRV/expansion tank. The pulsating is so bad it actually broke the pressure gauge.
PRV is set at 65psi, same at tank (set when empty).
Is the branch off just a bad idea or I simply did it wrong? What is the proper way to branch off in this scenario?
Thanks,
-Jason
Upon finishing installing it, the main branch (going to PRV) is functioning as designed. However, when I open the outside spigot, I got a bad pulsating of water flow. I used a Tee (3/4x3/4x1/2) for the branch off, see picture. the pipe is reduced to 1/2 for the outside spigot. I think the problem is when outside spigot opens, it somehow created a low pressure at the Tee, and water back flowed from the branch that feeds the PRV/expansion tank. The pulsating is so bad it actually broke the pressure gauge.
PRV is set at 65psi, same at tank (set when empty).
Is the branch off just a bad idea or I simply did it wrong? What is the proper way to branch off in this scenario?
Thanks,
-Jason
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