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Author:
BigReg1500 (CT)
I'm adding a utility/slop sink to my garage along with some other work going on. No problems getting the water supply - the garage shares a wall with the basement where the well feeds in.
I was even able to find a chase from the garage all the way up through 1st & 2nd floors to the attic to connect with an existing vent. Things almost never go that easy for me. Wife thought I was crazy to be that excited after coming down from the attic that night.
My question is with connecting the utility pump outlet to the main waste line, which is running about 5' overhead on the garage wall. Do I want the check valve at the top of the vertical run, then just use gravity feed into a combo wye in the lateral line?
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Author:
hj (AZ)
The check valve can go anywhere in the discharge line, and how it drains depends on the way you install it, not where the check valve is. Are you saying that you have a straight chase through two stories of the building without any fire stops? Especially from a garage? That would be almost a criminal defect.
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Author:
BigReg1500 (CT)
Yep - previously had some lines running there for hydronic/hydro-air heat system in the attic serving the 2nd floor.
I ripped those out for the new boiler & hydronic system (lines run elsewhere) and had a nice chase to use. It's being sealed up & fireblocked once this is finished.
The hvac system in this house when we bought it was horrible. The criminal aspect was that someone paid money for it. We had it totally redone (cost a fortune) but it's a beautiful system now.
I guess what I was wondering was whether it makes more sense to have the check valve at the top or bottom of the vertical line. If the check is at the top, then more water will drain back into the crock at the end of each cycle. If the check is at the bottom, then a column of water will always be sitting on the flap keeping it closed. But does that make it work harder at the start of each cycle?
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