Ask Experts Questions for FREE Help !
Ask
    paars's Avatar
    paars Posts: 2, Reputation: 1
    New Member
    		  
    #1

    May 17, 2013, 11:24 AM
    Soil drain line as vent
    I have a 3" soil drain line coming from a WC which is just in front of the main vent stack, also 3". Can I connect the drain from 2 sinks, approx. 2" downstream of the vent stack (1" downstream from the WC) without putting in a separate vent line for them? The idea being that the section of the soil line between the WC and the sinks will act as a 'wet vent' leading to the main vent stack.
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    May 17, 2013, 12:41 PM
    Hi Paars

    You can connect into the vertical 3" vent pipe and run the drain for the sinks from there as long as the sinks are within 3-5 feet of the vent stack. If you excedd the 5 foot distance vent to sinks, you need to add a vent and connect it back into the 3" vent stack at 42-48" off the finish floor.

    That make sense?

    Mark
    paars's Avatar
    paars Posts: 2, Reputation: 1
    New Member
    		  
    #3

    May 17, 2013, 01:32 PM
    That makes perfect sense. Makes it a lot easier as well.

    Thanks Mark
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Can I eliminate a drain vent by oversizing my drain line [ 2 Answers ]

I am plumbing in a cabin with limited attic space and my plumbing is on exterior walls. I feel that a vent on the toilet and washing machine are a must. I am wandering if I empty my 2" sink and shower drains into a 3" line that dumps into a 4" trunk line could I eliminate the vents on those...

How to vent drain line from the washing machine? [ 2 Answers ]

We are on septic, and have been having foul odor from washing room. We took the wall down to find that the vent pipe is not vented through the roof, and does not have a cap. Help what should we do?

Drain line vent. Where? Why? [ 3 Answers ]

Where is the proper location to install a vent in a bath tub drain line? Is a vent necessary? What is the real purpose of the vent? Thanks in advance

Venting Soil Line - Can I use 1 vent for all of my venting needs? [ 8 Answers ]

Hi, I am renovating an old house and have decided to add a master bathroom. I currently have 1 (ea) 2 inch vent pipe penetrating the roof line. I'd like to branch off the single pipe and run several vent pipes off the single one mentioned above to vent two bathrooms, the kitchen sink, and...

Vent for Washing Machine Drain Attached to Existing Drain Line [ 0 Answers ]

"Current setup for a washing machine has the discharge hose "hooked" into a laundry tub. Tennants would like something more "permanent." The laundry tub has a normal trap followed by a horizontal run of about 2 feet (2" threaded pipe) then "T's" into a vertical drain/vent. The vent line goes...

View more questions Search