- Joined
- Mar 2, 2020
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- 69
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So planning my plumbing out, going with colored schedule 40 and schedule 80 fittings. Have a few questions 1) should I use unions before and after gate/ball valves, so they can be removed. 2) should the manifold be plumbed back into the drain line to the sump. 3) would you plumb a uv sterilizer into return line and then the exit line from sterilizer back to manifold? Thanks in advance.