Plumbing Question

#1
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Oct 21, 2004
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#1
Hello VN Plumbers.

I'm considering adding a small utility sink to my laundry room and my initial thought was to use the washer waterlines and washer drain for it. From the limited research I've done it appears using the drain as I intended would be "wet venting" or something along those lines. IOW, no bueno.

Is it a big plumbing deal to create the proper draining situation? Would it be possible to use the existing washer line as the sink drain and drain the washer into the sink rather than have two drains into one?

One more bit of information that might matter - the line is on a grease trap/septic tank rather than sewer line. My kitchen, W/D and a bath all drain to this tank while the rest of the house drains to the main septic tank

It's not critical I do this but it's more complicated than I first expected. If it's a big expense I'll just keep things as is.

Thanks
 
#3

Orangeslice13

My custom title was stolen
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#3
Hello VN Plumbers.

I'm considering adding a small utility sink to my laundry room and my initial thought was to use the washer waterlines and washer drain for it. From the limited research I've done it appears using the drain as I intended would be "wet venting" or something along those lines. IOW, no bueno.

Is it a big plumbing deal to create the proper draining situation? Would it be possible to use the existing washer line as the sink drain and drain the washer into the sink rather than have two drains into one?

One more bit of information that might matter - the line is on a grease trap/septic tank rather than sewer line. My kitchen, W/D and a bath all drain to this tank while the rest of the house drains to the main septic tank

It's not critical I do this but it's more complicated than I first expected. If it's a big expense I'll just keep things as is.

Thanks
How were you planning on attaching to the washer drain?
 
#9

golfballs

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#9
i used to have a utility sink that shared a drain w the washer and never had any issue. Although the only thing I ever really used it for was to clean my golf clubs
 
#10

Orange_Vol1321

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#10
Hello VN Plumbers.

I'm considering adding a small utility sink to my laundry room and my initial thought was to use the washer waterlines and washer drain for it. From the limited research I've done it appears using the drain as I intended would be "wet venting" or something along those lines. IOW, no bueno.

Is it a big plumbing deal to create the proper draining situation? Would it be possible to use the existing washer line as the sink drain and drain the washer into the sink rather than have two drains into one?

One more bit of information that might matter - the line is on a grease trap/septic tank rather than sewer line. My kitchen, W/D and a bath all drain to this tank while the rest of the house drains to the main septic tank

It's not critical I do this but it's more complicated than I first expected. If it's a big expense I'll just keep things as is.

Thanks
Wet venting isn't that big a deal. Is your drain that your washer uses exposed like in picture #1 or inside the wall like picture #2? #1 is an easy and quick job. #2 is cutting your sheetrock and running your sink drain in the wall to attach which would also mean boring holes big enough to run your sink drain through your studs to the washer drain.

While the washer drain being completely open should vent/drain a small sink next to it I would still put a studor vent underneath the sink like orangeslice recommended. They're inexpensive and work great. When you tie in to that washer drain use a Y connection that has a sweeping 90 like in picture #3.


Back to wet venting you should be fine for what you are doing. People will add a bunch of stuff to one vent is when problems start. You should be fine.
 

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#11
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Oct 21, 2004
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#11
Wet venting isn't that big a deal. Is your drain that your washer uses exposed like in picture #1 or inside the wall like picture #2? #1 is an easy and quick job. #2 is cutting your sheetrock and running your sink drain in the wall to attach which would also mean boring holes big enough to run your sink drain through your studs to the washer drain.

While the washer drain being completely open should vent/drain a small sink next to it I would still put a studor vent underneath the sink like orangeslice recommended. They're inexpensive and work great. When you tie in to that washer drain use a Y connection that has a sweeping 90 like in picture #3.


Back to wet venting you should be fine for what you are doing. People will add a bunch of stuff to one vent is when problems start. You should be fine.
Thanks. #2
 
#12
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#12
any of you have a rough idea what a plumber might charge to do this? just trying to figure out if it's worth it. I don't have a ton of room so it would be a small utility sink.
 
#16

Orange Sunset

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#16
any of you have a rough idea what a plumber might charge to do this? just trying to figure out if it's worth it. I don't have a ton of room so it would be a small utility sink.
Try doing it yourself. There’s enough knowledge round here to walk you thru it. It’s not a major construction project. DIY plumbing has gotten a lot easier with the newer PEX lines & SharkBite connectors
 

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