• Prevents grease from entering plumbing and septic systems
  • 11-gauge cold rolled steel body
  • 10 GPM flow rate and 20 lb. grease capacity
  • 2" threaded inlet & outlet

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Length 21 3/4 Inches
Width 14 Inches
Height 12 Inches
Capacity 20 lb.
Flow Rate 10 GPM
Inlet and Outlet Size 2 Inches
Threaded Connections Yes


The Watts WD-10-THD 20 lb. grease trap with threaded connections prevents greasy substances from entering plumbing systems, septic fields, and wastewater treatment facilities where they cannot be processed properly and could harm the environment.

Grease traps like the Watts WD-10-THD are often used with cooking or prep sinks, pot sinks, and commercial dishwashers in various types of commercial food service operations. A flow restrictor on the inlet side of the interceptor slows incoming effluent and redirects it through baffling inside the grease trap.

The Watts WD-10-THD Grease Interceptor features a body constructed of 11-gauge cold rolled steel with an oven-cured, acid-resistant baked gray epoxy coating. Other standard features include a solid steel cover with gasket, a removable baffle assembly, a deep seal trap with cleanout, no hub connections, and an external cast iron flow control fitting (flow restrictor).

The Watts WD-10 grease trap has a grease capacity of 20 lb., and a flow rate of 10 GPM. It is PDI (Plumbing & Drainage Institute) Certified, and meets the industry and PDI Standard PDI-G101 for separation efficiency. This standard specifies that the grease trap must maintain 90% separation efficiency up to its rated grease retention capacity.

Overall Dimensions:
21 3/4"L x 14"W x 12"H
Flow Rate: 10 GPM (Gallons Per Minute)
Grease Capacity: 20 lb.
Threaded Inlet & Outlet Size: 2"

  • PDI Certified

    PDI Certified

    This item has been certified by the Plumbing and Drainage Institute (PDI), which promotes the advancement of Engineered Plumbing Products.

Specsheet Specsheet Warranty Warranty

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Customer Reviews

  • Overall User Rating: Watts WD-10-THD 20 lb. Grease Trap with Threaded Connections

    4.8 stars from 6 reviews


    People Talk About:

    grease Trap install installed traps before easy job price smell

    Very good product. Has not rusted out and was fairly easy to install. It was a replacement for our was sink. And the price was great compared to our vendors I checked.

    from Kostner Korner Posted on

    this one is good price. but then when i open this grease trap first time.. the smell was disgust. i was surprise with the smell.... if you have to install grease trap for your business, you have to expect that.

    from Coffee Speaks Posted on

    This grease trap is very heavy and bigger than I thought. It does the job. As long as you tighten up the screw well, the smell wont leak out.

    This grease trap serves it's purpose: to catch grease before it goes into the drainage system. It's a necessary purchase and it does it's job.

    Posted on

    I don't know much about grease traps, but I ordered this becomes my plumber told me I had to. It's working well I assume, since it's been installed for over a year now and I've never had a problem with it.

    from Tiffanee & Co. Bakery Posted on

    We love our new grease trap! It was cheap, easy to install, and came quickly in the mail. This is a big improvement over the 10 year old one we had before. I wish we had done it sooner!

    from Pie Shop, Inc. Posted on

    The Dormont WD-10-THD Grease Interceptor 20 lb. Grease Trap with Threaded Connections came in a timely manner, and does the job. Give it a try.

    from Five Points Coffee Posted on

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