• 15 GPM flow rate, 30 lb. grease capacity
  • 2" threaded inlet & outlet, external cast iron flow control fitting
  • PDI Certified
Special Order

Some items on our website are not normally stocked in our warehouses. These items are marked "Special Order"
underneath the price on the item's page.

Please understand that Special Order items may not be able to ship within 1 business day like our regularly-stocked items.
Some may be shipped directly from the manufacturer. Others might have to be ordered into our warehouse with the next order
from that manufacturer and then shipped to you; this could take up to several weeks.

As a result, we urge you to contact us if you have questions about the delivery time of a Special Order item you wish to order.

Please note - we are not always able to cancel special order items once the order is placed. These items may also be non-returnable. Please contact us if you have any questions before ordering this item.

2 reviews
MFR Item:

Companion Items

Length 22 Inches
Width 15 Inches
Height 14 Inches
Capacity 30 lb.
Flow Rate 15 GPM
Inlet and Outlet Size 2 Inches
Threaded Connections Yes


The Watts WD-15-THD grease interceptor 30 lb. grease trap with threaded connections prevents greasy substances from entering plumbing systems, septic fields, and waste water treatment facilities where they cannot be processed properly and could harm the environment.

Grease traps like the Watts WD-15-THD are often used with cooking or prep sinks, pot sinks, and commercial dishwashers in various types of commercial food service operations.

The Watts WD-15-THD grease interceptor is built to last, with a body made of 11-gauge cold rolled steel. The removable grease accumulating cover and baffle assembly are secured to the grease trap's body with a center mounted hex head and a gasket seal.

The Watts WD-15-THD grease trap has a grease capacity of 30 lbs., a flow rate of 15 GPM, and may be recess mounted or floor mounted.

Please consult the Specification Sheet for detailed diagrams, measurements, sizing guidelines, and installation requirements. PDI (Plumbing and Drainage Institute) Certified.

Extended lead times may apply for this item based on availability. Please contact us for the current lead time.

Overall Dimensions:
22"L x 15"W x 14"H
Flow Rate: 15 GPM
Grease Capacity: 30 lbs.
Threaded Inlet & Outlet Size: 2"

Because this item is not stocked in our warehouse, processing and transit times will vary. If you need your items by a certain date, please contact us prior to placing your order. Expedited shipping availability may vary. We cannot guarantee that this item can be cancelled off of the order once it is placed.


PDI Certified

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Customer Reviews

Overall User Rating: Watts WD-15-THD Grease Interceptor 30 lb. Grease Trap with Threaded Connections ( 5.0 stars from 2 reviews )

    This trap is just what we needed. It fits great under our 3 compartment sink. It was very easy to install with basic home depot parts. It is also easy to clean and inspect.

    from Gilpin Market Posted on

    Easy to install and works great!

    This grease trap is the perfect fit under our 4 compartment sink. It was very easy to plumb with the threaded inlet and outlets. It is built well and should last for years with an easy off cover for cleaning.

    from American Hotel Adell Posted on

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