Hey guys,

I was hoping to get some practical suggestions on my specific plumbing situation... (After reading tons of discussions on this topic, the only thing I know for sure is that every situation is different!)

So here's my situation... In the picture below, you'll see that my washer drains into a 2" standpipe (far left) and you'll see a 3" drain line going horizontally across (it exits the house just to the right of the pic). I want to place a utility sink to the right of the washer (in place of the second washer you see in the pic). The second picture shows a close-up of the plumbing.

Tapping into the supply lines should be relatively straight-forward, but can you please tell me how you would configure the draining and venting, given the existing plumbing? Unless it adds a great deal of complication, I would prefer to avoid draining the washing machine into the sink.

Thank you!

45670

45671

Given the existing plumbing, you need to purchase a LAUNDRY TRAY pump and pump the utility sink waste up to the drain line. Here, you would need to cut a 3"x2" wye into the drain line for the utility sink and connect the pump drain to that. The vent from the pump can connect into the washing machine vent by installing an 1.5" sanitary tee fitting upside down...run to the pump vent after that.

Questions? Let me know, OK?

Mark

Hi Mark,

Thanks for the quick reply! A couple of follow-up questions...

-- For the 3x2 wye, I suspect that once I cut into the drain line, there will be very little slack due to multiple tie-ins on either side (not to mention that the drain line ties into a cast iron pipe just to the right of the pic... ) Any thoughts on the best way to deal with that?

-- Regarding the washing machine vent and the upside down tee, can you help me better visualize this? First, is my assumption correct that the washing machine vent is the 1½" vertical pipe on the far left? If so, the tee would be on its side, yes?

-- Just out of curiosity, is this type of pump not a good option? http://www.homedepot.com/p/Flotec-1-4-HP-Utility-Sink-Pump-FPUS1860A/100634178

Thank you again!

Allen

Because the piping is tight, you would use a SHIELDED CLAMP (see image) to install the wye fitting. Here, you would cut out say 18" of pipe and then install the wye. Measure the remaining pipe, including the make up into the fitting to the cut end of the existing pipe and then minus 1/4" to a 1/2" from that measure (for the rib of the clamp) and then prime/cement that piece onto the pipe (pulling pipe forward). Install the shielded clamp onto the pipe end, flip the rubber part onto itself, align the pipe, slip the pipe into place and then flip the rubber back onto the pipe and slide the clamp on and tighten appropriately.

Correct on the 1.5" vent at the washer ptrap...the sanitary tee fitting would be installed UPSIDE DOWN (inverted) and run over to the sink drain.

That pump you put up is just fine!

Regarding the shielded clamp, sounds good... (I've not used one of these before, but once I get my hands on this, I suspect your step-by-step instructions will become very clear... ) Will this Fernco model work just as well?

45673
Now, I had some question about the venting, but before I even go there, if the Flotec pump mentioned above is a good solution, the description says that it does not require a connection to the main-stack vent... Does this mean, then, that I don't have to worry about venting?


Thanks!

The STYLE of clamp is fine...it's "shielded", but you want to be sure you purchase one that is 3" plastic to 3" plastic (the one you posted was a 3" cast iron x 3" plastic).

Instructions are very important to follow to the letter, so if your pump instructions say no vent needed then you should be all set!

Great, thank you very much!!

You are welcome!