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P trap - for drainage systems

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Mechanical
Joined
Jan 10, 2016
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18
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SA
dears

we have project and we installe (P-Trap ) on each floor drain point . the supplier bring the floor drain it self with ( S trap ) . is there any Problem to keep the (P-trap) ? i.e we have (S-trap ) on the floor drain and the n we have (P-Trap ) on pipe Line .
 
This might be better in the plumbing engineering forum.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
 
You cannot double trap fixtures. Also, in most plumbing codes, use of S-traps are not allowed. S-traps are typically used on drains from HVAC equipment which is outside the plumbing code jurisdiction.
 
Although you can still buy "S" traps, most plumbing codes prohibit the use of "S" traps because the "S" traps do not work well. The most common places you’ll find “S” traps are at plumbing fixtures that aren’t vented, such as an illegal basement bathroom sink, a do-it-yourself basement bar sink, or a kitchen sink where the old steel drain in the wall was so corroded and blocked that someone installed a new drain, but never bothered to vent it. Floor drains are typically a minimum of 4-Inch.
 
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