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    marysr's Avatar
    marysr Posts: 1, Reputation: 1
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    #1

    Aug 18, 2009, 12:10 PM
    What is an s trap for bathroom sink?
    What is an s trap?
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Aug 18, 2009, 01:04 PM

    S traps can be installed if you are replacing an existing s trap, other than that I believe they are no longer allowed by code. If you look under most sinks you will see a P trap, frequently called a J trap. It drops down from the verticle drain pipe and forms a J shape before going horizontally into the wall. A S trap is like 2 Js put togethermaking an S shape laying on its side so it can drain straight down through the floor. They are prone to siphoning so not allowed.
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