List Price: $.00

Online Price: $

Part#: 4045-042-01

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: Pumpout ports cannot be used with selected connections. If pumpout port compatibility 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: 
50 GPM (3.2 L/s) / 623.4 lbs. (283 kg)
Solids Capacity:  0 gal. (0 L)
Liquid Capacity:  125 gal. (473 L)
Weight:  215 lbs. (98 kg)
Installed:  Indoor/Outdoor
GB-75-B high capacity grease interceptor


50 GPM 
Great Basin™ 99% Efficient Indoor/Outdoor High Capacity Grease Interceptor

Intended Market: Miami, FL
Satisfies Miami DERM 99% efficiency requirements
See Schier's complete offering for Miami-DADE

  • Best-in-class certified grease capacity
  • No flow control required, first in the industry certified to Type D of the ASME standard
  • Safety Star® access restrictor prevents accidental entry
  • Rugged polyethylene tank
  • Fits through 36" doorways
  • 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 risers

Pumpout Port Compatibility
Use pumpout port PP2 for legacy GB-75 models (pre April 2019) with serial number "2019 - 4955" or below. Use pumpout port PP3 for legacy GB-75 models (from April 2019 to April 2020) and new GB-75 models (after April 2020).

Owners manual (.pdf)
CSI masterspec (.doc)

Customize this product:

Accessories Sold Separately:

Anchor Kit
List: $696.00
Online: $
Pumpout Port Kit
List: $236.00
Online: $
Risers to Grade
List: $
Online: $
Cover Adapter Tie-Down Kit
(above grade installations only)
List: $48.00
Online: $
Membrane Clamping Collar Kit
(for recessed and suspended installations)
List: $954.00
Online: $


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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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