Over 698,000 strictly plumbing related posts
Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by:
Author:
mr leak (CA)
Question: 2 bath lavs first and second story both directly above and below each other Can the 2 inch wet drain vent be switched to 1 1/2 at upper san tee to exit out the roof or does it still have to be 2 " ?
|
Post Reply
|
Author:
packy (MA)
you can not wet vent between floors.
even if you could, the wet vent and its extension to the stack must remain undiminished in size.
|
Post Reply
|
Author:
hj (AZ)
In most cases, you cannot install the drain like that in the first place. Very few, if any, wet vents are allowed between floors. The reason being that the water will develop enough velocity that it will create a "suction" and pull the water from the lower trap, thus defeating the purpose of the vent in the first place. BUT, if they actually allow you to do that, then reducing the size is okay.
|
Post Reply
|
Author:
LemonPlumber (FL)
Find the stack /system total dfu's.where this stack is not a portion it could be reduced.Here it would need to be yoke or back vented above the floor.And the back /yoke sets the terminal size.2"
|
Post Reply
|
Author:
dlh (TX)
what in the world are you talking about?
- - - - - - -
PLUMBERS "Protecting The Health Of The Nation"
|
Post Reply
|
Author:
hj (AZ)
How should he know? He just writes it, he doesn't have to read or understand it.
|
Post Reply
|
Author:
LemonPlumber (FL)
Stack is dry at level/wet vent serving.at point of vent.is it venting other fixtures down stream.when wet venting at multi levels ?Just a stack/no.where the fixture load down stream may allow a intermittent vent/yoke.Where the access dfu's load back vent
|
Post Reply
|
Author:
dlh (TX)
and you think that is any more understandable?
- - - - - - -
PLUMBERS "Protecting The Health Of The Nation"
|
Post Reply
|
Author:
LemonPlumber (FL)
I would love to have a picture of the tubing .sizes of the related tubing .down stream uses.But lav's are minus 2"stack concern.so .Where is the miss.Yoke/Back?Yes, not commonly used vent's.
|
Post Reply
|
Please note:
- Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
- Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
- Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
- Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.
Search for plumbing parts on our sponsor's site:
Special thanks to our sponsor:
|