Buy Now: $
List: $.00

Part#: 4075-021-01

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.
99% Efficiency Rating: Units must be piped in series.
Intended Market: Miami - Satisfies Miami DERM 99% efficiency requirements.
NOTE: Above Grade Installations Require Above Grade Support Kit AGS2 (Sold Separately).
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 Rates/Grease Capacities: 
250 GPM (15.8 L/s) / 1,859 lbs. (843 kg)
Solids Capacity:  128 gal. (485 L)
Liquid Capacity:  510 gal. (1,931 L)
Weight:  528 lbs. (239 kg)
Installed:  Indoor/Outdoor
GB-500-250HF indoor/outdoor high capacity grease interceptor


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

Intended Market: Vancouver, British Columbia
This unit is factory rated only. Please ensure unit meets local ordinance before specifying.

  • Safety Star® access restrictor prevents accidental entry
  • Rugged polyethylene tank
  • Cast iron covers for outdoor installations, H-20 rated
  • Composite covers for indoor installations, traffic load rated
  • Uses FCR2 field cut riser system for below-grade installations
  • Uses CA2 adapter for below-grade installations using 24" corrugated pipe riser
Owners manual (.pdf)
CSI masterspec (.doc)

Customize this product:

NOTE: This interceptor ships via LTL freight. Shipping destination must include dock doors. Appropriate equipment and personnel must be available for offloading.

Accessories Sold Separately:

Anchor Kit

Buy Now: $
List: $525.00
Above Grade Support Kit

Buy Now: $
List: $937.00
Pumpout Port Kit

Buy Now: $
List: $227.00
Risers to Grade

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

Buy Now: $
List: $1,834.00


job name (optional)
job city (optional)
email address (required)
 Click here to have us contact you about this project.


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

Scroll To Top