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The drain pipe should have a vent that goes up where the sink drain goes into it. That is where it vents. Sinks drain because there is nothing causing a vacuum when the water leaves the sink.
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∙ 14y ago
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Is it satisfactory to install a bathtub vent 5 feet down stream to a direct vent strictly for the tub?
Absolutely NOT What is possible (Check local codes) is to install the trap 2 ft from the fixture and the vent 2 ft from the trap BUT if the trap is not easily accessible then your going to have major problems snaking the line
Do you need and under sink air vent for a garbage disposal?
If there is no vent off the kitchen sink you would need to install an in-line vent.
How to Drain air out of water pipe?
Install an automatic air vent on the line
Should the trap be before or after vent?
Depends on your perspective what is before or after. If you're following the direction of the water flow, the trap needs to be before the vent. A water filled trap blocks bad smells/dangerous gasses from entering your home. Putting the vent closest to the sink would bypasses that block. It would also likely cause gurgling because of siphon action trying to pull the water out of your trap (the vent breaks the siphon because its easier to pull air down the vent than to remove the water from the trap) Right = Sink - trap - vent - main drain stack
If the vent is below the drain is this an s trap if the drain turns up before the fixture with space between trap?
An S trap would go through the floor. A P trap goes through the wall. As long as the drain is below the bottom of the sink, it should drain. Distance between the bottom of the sink, the trap and the drain does not matter, it just changes how much water stay in the drain. Normally it is just in the trap, but it can be above the trap if circumstances cause the trap to be lower than usual.
Is it satisfactory to install a bathtub vent 5 feet down stream to a direct vent strictly for the tub?
Absolutely NOT What is possible (Check local codes) is to install the trap 2 ft from the fixture and the vent 2 ft from the trap BUT if the trap is not easily accessible then your going to have major problems snaking the line
Is the pee trap above or below the vent?
I BELIEVE: In a horizontal run, the p-trap must be below the vent. Otherwise, the vent may fill with water, creating a blockage, which would then syphon the water from the p-trap causing odors and health concerns from sewer gas. On a horizontal run, the vent must come off the run (presumably with a "wye") where the vent run is above the center line of the drainage run, thus the p-trap is lower than the vent...
How do you install a running trap for a bathtub?
most places don't allow a running trap and instead allow a P trap with a vent. If you don't care about codes and want to install (not a good idea) a running trap then simply buy a P trap with another street 90 and hook up your drain line to both sides of the trap horizontally. If you want to install your tub trap the right way then use a P trap with a vent line down stream of your trap. A running ( P ) trap can be ( 4 ) 45 degrees fittings in DWV, or ( 4 ) 1/8 bends in cast iron fittings. I would use a long sweep in either fitting from your tail peice off your trip waste ( whitch is your drain hardware from tub ) running horizontally install all ( 4 ) either fittings in horizonal drain line. Make sure you put the first fitting looking down,next one looking straight,next one looking up, next one looking straight, this will be putting you back in line with horizonal line again. I would make sure you have either a vented line or auto vent somewhere in line. If you use off of a vented line make sure you are no more than 6 feet away from this line in ( 2 in. ) pipe. Like if you were taking off a drain line going to a lav. or other fixture, the vent to that fixture starts right above drain line sticking out wall if it is a lav. You start off with drain line sticking out of the wall if it is a lav. and buy the time you get to where you are connected to your tub drain will be no more than 6 feet away A auto vent can be installed anywhere you can on the drain line, it can even be lower than the tub, but higher than your drain line. If you do not fully understand how to do this, i would call a plumber. The only reason you would want to use a running ( P ) trap, is if you did not have the room to install a ( P ) trap. And alot of times you do not have the room for a running ( P ) either.
Do you need and under sink air vent for a garbage disposal?
If there is no vent off the kitchen sink you would need to install an in-line vent.
How to Drain air out of water pipe?
Install an automatic air vent on the line
How close to the p trap should the vent pipe be?
Using a typical 1/4" per foot fall (slope) on a 1 1/2" drain, such as a sink drain, the vent must be within 6 feet of the trap to avoid falling below the drain level, and thereby not functioning as a vent.
Should the trap be before or after vent or condensation drain?
The trap should be before the vent. The trap is used to maintain a watter barrier to prevent waste water and sewer gasses from entering the home. The vent is use after the trap to allow the water to flow freely in the pipe with out drawing the water from the trap.
Washing machine stand pipe is above and p trap is below bathroom floor p trap hooks to house drain then hooks to house vent stack that is 6 inches or more above p trap is this safe and efficient?
No
Should the trap be before or after vent?
Depends on your perspective what is before or after. If you're following the direction of the water flow, the trap needs to be before the vent. A water filled trap blocks bad smells/dangerous gasses from entering your home. Putting the vent closest to the sink would bypasses that block. It would also likely cause gurgling because of siphon action trying to pull the water out of your trap (the vent breaks the siphon because its easier to pull air down the vent than to remove the water from the trap) Right = Sink - trap - vent - main drain stack
Does an upstairs bathtub need its own trap?
Yes and a vent and hot and cold water to it and a waste line would also be a great idea
How do you clean a plumbing vent on the roof?
You should not have to clean a vent on the roof. unless you are trying to clean the waste line to the fixture below. Then you would send plumbing rods through the vent on the roof.
If the vent is below the drain is this an s trap if the drain turns up before the fixture with space between trap?
An S trap would go through the floor. A P trap goes through the wall. As long as the drain is below the bottom of the sink, it should drain. Distance between the bottom of the sink, the trap and the drain does not matter, it just changes how much water stay in the drain. Normally it is just in the trap, but it can be above the trap if circumstances cause the trap to be lower than usual.
