The oil floats on the surface of the water and creates a liquid seal preventing further evaporation.
Floor drain provision for evaporation.
It is an.
Learn the role of traps and trap primers.
More recent plumbing codes have added a trap seal protection device as another method to protect the trap seal against evaporation.
Pouring a small amount of vegetable or mineral oil into the drain to just cover the trap s water surface.
D provision for evaporation.
For the stand pipe 1 and 3 seem like are the best options.
It s doubtful that 3 would be good for a floor drain.
4 barrier type waterless floor drain trap seal protection device is an alternative to the first two methods in that it doesn t use traditional water based methods to block sewer gas and minimize trap seal evaporation.
Floor drains shall connect into traps shall be accessible and readily cleaned and shall be located so that they are easily visible.
A barrier type floor drain trap seal device can be installed in floor drains.
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Besides equipment installation costs and water usage maintenance is a significant disadvantage of water supplied trap primers.
Mineral oil tends to be a better option as it does not go rancid where vegetable oil does.
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Share improve this answer follow answered aug 7 18 at 6 16.
Routinely adding water to the floor drain.
But if you have a shower that s been abandoned since the kids moved out or a floor drain that never gets used the water in the trap can eventually evaporate.
Probably sewer gas emitting from the floor drain.
When it comes to condensate evaporator pans grainger s got your back.
It makes sense that that might protect a stand pipe evaporation provided it doesn t dry out on the sewer side but in the case of a shower trap.
Waterless floor drain traps are fully approved in 15.
That lets in stinky or even dangerous sewer gases.