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Part#: 4055-031-01

Intended Market: Fixed outlet required by local code
Flow control has been removed from this unit and the outlet connection is welded in a straight-through configuration only.
Satisfies Miami DERM 99% efficiency requirements. Units must be piped in series.
NOTE: Pumpout ports cannot be used with selected connections. If pumpout port combatibility is desired, please select the appropriate connection configuration.
NOTE: This 6" connection configuration includes two 4" FPT side outlets for Pumpout Port compatibility.

Technical Information

Flow Rate/Grease Capacity: 
250 GPM (15.8 L/s) / 1,068 lbs. (484 kg)
Solids Capacity:  69 gal. (261 L)
Liquid Capacity:  277 gal. (1,049 L)
Weight:  376 lbs. (171 kg)
Installed:  Indoor/Outdoor
GB-250-250HF Great Basin™ Indoor/Outdoor high capacity grease interceptor


250 GPM 
Great Basin™ High Flow Grease Interceptor for Indoor/Outdoor Installation

Intended Market: Vancouver, British Columbia

This unit is factory rated only. Please ensure unit meets local ordinance before specifying.

Pumpout Port Compatibility
Use pumpout port PP2 for legacy GB-250-250HF models (pre April 2019) with serial number "2019 - 6321" or below. Use pumpout port PP3 for legacy GB-250-250HF models (from April 2019 to April 2020) and new GB-250-250HF models (after April 2020).

Customize this product:

Accessories Sold Separately:

Anchor Kit

Buy Now: $
List: $670.00
Pumpout Port Kit

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List: $227.00
Risers to Grade

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List: $
Membrane Clamping Collar Kit
(for recessed and suspended installations)
CC2 (x2)

Buy Now: $
List: $1,834.00


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This product can expose you to chemicals such as Lead, Carbon Black, N-Hexane, Methyl Isobutyl Ketone, Nickel, Bisphenol A, Naphthalene, Talc, Vinyl Chloride, Formaldehyde (gas) and Titanium Dioxide, which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to

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