More recent plumbing codes have added a trap seal protection device as another method to protect the trap seal against evaporation.
Floor drain provision for evaporation.
That lets in stinky or even dangerous sewer gases.
Mineral oil tends to be a better option as it does not go rancid where vegetable oil does.
Pouring a small amount of vegetable or mineral oil into the drain to just cover the trap s water surface.
Smith manufactures a full line of floor drains and devices that are easy to install and cost effective including variations for heavy duty drains with adjustable strainer heads special purpose drains traffic drains planting area drains trap seal primers devices and more to suit any construction need.
Share improve this answer follow answered aug 7 18 at 6 16.
Learn the role of traps and trap primers.
Routinely adding water to the floor drain.
For the stand pipe 1 and 3 seem like are the best options.
Floor drain seals subject to evaporation shall be of the deep seal type shall be fed by means of a priming device designed for that purpose or shall be filled with vegetable oil.
Floor drains shall connect into traps shall be accessible and readily cleaned and shall be located so that they are easily visible.
Besides equipment installation costs and water usage maintenance is a significant disadvantage of water supplied trap primers.
It is an.
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A barrier type floor drain trap seal device can be installed in floor drains.
Probably sewer gas emitting from the floor drain.
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.
It s doubtful that 3 would be good for a 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.
After adding evaporation and multiplying the number of drains in a commercial building the water use can quickly turn from ounces to many gallons per hour.
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.
Member of morris group.
The oil floats on the surface of the water and creates a liquid seal preventing further evaporation.
Waterless floor drain traps are fully approved in 15.
