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347
347 Member Posts: 150
in Plumbing

Hello All,

I am on a job on the north shore of Long Island. It is installed after the housetrap before the main 4" waste stack for two second floor bathrooms but before a slop sink and washing drainpipe in the basement.

Any help would be appreciated.

Thank you 

Drain1.jpg Drain2.jpg Drain3.jpg Drain4.jpg Drain5.jpg Drain6.jpg

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,707

    Grease trap.

    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • Jamie Hall
    Jamie Hall Member Posts: 27,304

    And clean it out. Which won't be any fun at all….

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Larry Weingarten
    Larry Weingarten Member Posts: 4,084

    Hi, Good chance you'll want some ventilation going when you open it up. Who knows, maybe that long-lost gold ring is in there 🤩

    Yours, Larry

  • 4GenPlumber
    4GenPlumber Member Posts: 142

    That looks like a separator (probably not for grease), also not after a house trap. If that's the kitchen and laundry going into it, its like a gray water tank, but tied into the sewer...weird. pour some bleach into the laundry tray before opening it, and take pics when its opened.

  • hot_rod
    hot_rod Member Posts: 27,403

    Looks like a plaster trap (solids interceptor) possibly. They were used at some sinks in medical facilities.

    Or a pottery person lived there and used the sink for clean up?

    Or a grease trap.

    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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