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Just enough to reach the crown weir to prevent fumes from passing through the trap seal
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∙ 13y ago
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What is the difference of a gully trap drain from a floor drain?
The difference between a gully trap drain and a floor drain is placement. A floor drain is in a floor, a gully trap drain goes on an external wall.
What's the difference between a floor trap and a floor drain?
Not much other than the floor slopes into a flor drain so any water or other fluid goes directly into it while a floor sink is bigger, sometimes has a strainer in it but pipes can be ended directly above floor sinks so that the fluid from the pipe flows pirectly into it
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.
Smelling sewer from floor drains?
Floor drains that do not have water flow through them will go dry and sewer gas will leak out of them because the trap makes a seal and stops air from flowing out of the floor drain. Most commercial properties have drip primers that allow water to drip into a floor drain and keep the trap sealed but because water is dirty and since the drip primer has to have such a tiny hole, over time the drip primer corrodes and stops working and stops keeping water filled in the trap which is below any floor drain. When this happens like 2 - 4 yrs after the building was constructed the owner (like most) don't care or even know to care where the drip primer is. The best way I believe to seal a floor drain trap that is hardly used is to pour 1 gallon of water then 1/2 cup of vegetable oil down the floor drain, this oil sits on top of the water constantly making a seal on top of the water so the water can not evaporate and always making a trap seal.
When you can use p trap and s trap in plumbing?
A P trap goes thru the wall, an S trap goes thru the floor.
Should there be water in the stink pipe?
stink pipe? any fixture connected to any drain line in your home should be sealed off from any sewer smell from a trap, and yes if you have a trap it should have water in it. If its a floor drain that isn't used much I recommend you pour a little bit of vegetable oil down it after you pour water and that seems to correct a trap going dry for a long time.
Why do you need to flush a floor drain periodically?
Floor drain trap can dry out leaving no seal, allowing sewer gases to escape.
Why should the trap of the floor drain be of deep seal type?
They can also require to have a self primming trap
Does a new floor drain in a residential concrete basement floor in a former dirt crawl space need a vent?
A 3" or greater sized floor drain with p-trap doesn't need a vent providing,the fixture drain or(the pipe leading horisontally to the p-trap)is, as or longer,than 18".A p-trap lesser than 3" must be vented.
Why do you smell cesspool gas in downstairs bathrooms while the upstairs shower is in use?
If this is a new occurrence (it did not happen in the past), the most likely cause is a dry drain trap in the downstairs bathroom. A drain trap is a double U shaped arrangement for the drain that allows water to be trapped in the U-shaped connection. The purpose is to form a water plug that prevents sewer gasses from escaping back through the drain hole. When this water evaporates, the gases can get through. You can see this arrangement if you can view the drain pipe under a sink. It is visible under most bathroom and kitchen sinks. To solution to the problem is to dump water down the drain to fill the trap. This occurs most often in unused bathtub drains and floor drains. You may need to look under a floor rug to see if you have a floor drain. If you have a floor drain, just pour about a quart of water down the drain to fill the trap. If this does not solve your problem, you may need to call a plumber to check out what is called the vent stack to see if that, or some other issue, is causing the problem.
How do you identify a sewer gas smell in basement bathroom?
Most likely a drain has dried out and there is no water in the trap to stop the gas from coming up. Sink, shower, or main floor drain.
What is is a p trap?
Normally a fixture trap BUT in some cases can be used as a storm or floor drain trap and it looks like the letter P
