plumbing/utility sink question

[jpearson]

I am a new member to this board but so for you have helped me install a heater and a 5hp Ingersoll Rand compressor in my garage. I'm currently working on installing a utility sink. I don't have a lot of plumbing experience so I am looking for guidance. I don't currently have hook-ups but it is an attached garage and it shares a wall with my master bath.

The first picture is the spot where I would like to put the sink (it is just a free standing plastic utility sink from HD). The spot is on the opposite side of the wall from our shower/steam room. There is already a small access panel cut in the drywall - see first pic.

The second pic is in the crawl space directly below the shower. It shows the flexible water lines and the drain pipe. My question is - can I just T into this drain pipe where it is circled in green? That spot is about a 1 1/2 feet below the floor of my shower. It would basically be a vertical drop of drain pipe from the sink to that spot - would it be OK to use a flexible drain pipe? Can I just T - flexible water lines into the hot and cold lines shown in the pic? I know it will rob water from the shower but when the sink is not in use it shouldn't affect the showers performance should it?

Thanks for the input.

 

[Zeke]

You can do the drain as you propose, but it won't be to code. In the best terms, that would be a wet vent. Wet vents are used, but with their own trap and enter below the shower trap. And still, the pipe size is not designed for a laundry sink AND a shower.

Over all, in my mind, no big deal.

Do the water any way you can. Provide shut offs at the base of the sink. You might want to provide shut offs at the connections as well. Redundant, but safe.

 

[rickairmedic]

Well you are not going to be using the shower and utility sink at the same time so I dont see any problems with your idea . I would recomend hard pipeing into the drain line and on the water lines just use Shark bites .


Rick

 

[Charles (in GA)]

Take the 90° elbows out of the shower supply lines and install T fittings, then shutoffs, and you are in biz.

Make sure the sink has its own P trap and put a one way vent valve on a standpipe behind the sink, should work OK for your purposes.

Charles

 

[Zeke]

Take the 90° elbows out of the shower supply lines and install T fittings, then shutoffs, and you are in biz.

Make sure the sink has its own P trap and put a one way vent valve on a standpipe behind the sink, should work OK for your purposes.

Charles

That'll work. Better than a wet vent.

I'll bet they didn't have those back when wet vents were allowed as the only option.