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    hawk4245's Avatar
    hawk4245 Posts: 1, Reputation: 1
    New Member
     
    #1

    May 7, 2007, 07:59 PM
    Washer drain
    I have a washer in the basement, the drain pipe is a one inch steel pipe that ties into the 6 inch cast iron main about 5 or 6 inches above the washer. The house is about 50 years old and the inspector said I have to put a p trap into the washer drain. Since the pipe is already above the washer where should the p trap be installed and how could I tie it into a one inch line without cutting a bigger hole in the main. Could a check valve be used in this case instead of a p trap to achieve the same results?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #2

    May 8, 2007, 02:51 PM
    Without a trap between the washer and the sewer you have a direct open connection between the sewer and your house. If a "P" trap's installed you will also need a vent otherwise you would be building a outlawed "S" trap.
    I'm surprised the inspector didn't inform you about the vent. A one inch drain line has just got to be giving you problems and a check valve does not substitute for a trap. Good luck, Tom

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