My wife asked me to install a deep sink in our laundry room. Are these plumbing supply lines that I can use for this? If so, how do I tap into them?

http://www.patrickgwhalen.com/documents/LaundryPipes.jpg

Looks to me like a hot water, cold water and drain pipe but I've never seen the weird things sticking out of the first two. The thing on the drain pipe just looks like a cap that would screw or pop off. Not a plumber though... someone smarter know?e

How about the plumbing experts that answer the questions every day on this page dontknownuthin... will we do?

Hi PWTX, yup, that is a drain (pipe above cap) and copper stub outs for hot and cold water... pipes have just been painted! The cap below is the cleanout you would remove to snake the drain if the sink clogged!

Shut the water off and then clean the copper pipes up using sandcloth and cut the pipes and install shutoffs.

Cut the plastic cap off the drain pipe and then use a PVC coupling to extend the pipe and install a PTRAP. Use PVC primer to clean the pipe and fittings and then use PVC cement to connect everything!

That should do it for you!

Mark

Assuming they are water lines, albeit strange looking, you don't tap into them. You turn off the water, cut the ends off, install a compression angle stop and stainless risers. Looks like a 5/8 (nominal 1/2 copper) but could be CPVC. If CPVC you can use a transition fitting to the angle stop and proceed as above. For the drain, looks like 1 1/2 PVC.

Awesome and THANK YOU! I assumed they were, but wanted to make sure. I'll let you know how it goes :)

This looks like a typical modern day rough in for a sink. The water stub outs are copper x pex stub outs. Basically just a transition in the wall from pex to copper. Do as suggested above by shutting main water off, draining the system, clean the stub outs, cut and install compression stops, make sure stops are in the off position and turn the main water back on. As for the drain, grab it with your hand and give it a good strong wiggle. This is just to make sure the pvc drain stub out is glued into the fitting in the wall. I don't glue the stub out in to the fitting, so If I need to use a fitting trap adapter (when space is limited) I can.

Thank you everyone for your help! Three hours of pretty simple work and I have checked one item of my honey do list :)

You may have finished already so this may be mute. All great answers but the supply pipe must be sanded with emery paper so you can solder, slip on compression fittings or a PEx connection. In my area it is uncommon for a clean out to be stubbed in like this.