Now, connect the bypass valve to your cut pipe. Use flexible copper or PEX tubing if you’re lazy (I’m lazy). Use rigid pipe if you want to impress your neighbors.
Wrap every threaded connection with Teflon tape. Wrap it clockwise three or four times. This is the secretsauce that stops drips.
Tighten everything with a wrench, but don’t Hulk it. Just snug. Overtightening cracks plastic, and then you’re crying into the bucket. We don’t want that.