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Part#: 4070-001-04

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.

Technical Information

Flow Rates/Grease Capacities: 
50 GPM (3.2 L/s) / 272.7 lbs. (123.7 kg)
75 GPM (4.7 L/s) / 175.6 lbs. (79.7 kg)
Solids Capacity:  1.9 gal. (7.2 L)
Liquid Capacity:  40 gal. (151.4 L)
Weight:  69 lbs. (31.3 kg)
Installed:  Indoor, On-floor, Buried, Low-Profile Next-to-Sink
Schier GB3 indoor grease interceptor


50/75 GPM 
Great Basin™ High Capacity Grease Interceptor for Indoor Installation

The GB3 can be installed as a 50 or 75 GPM interceptor, and can be set on the floor or buried. Unit comes ready to connect to 4" pipe. This product may be used in place of models GB-50 and GB-75 (indoor installations only).

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

Customize this product:

Accessories Sold Separately:

Pumpout Port Kit

Buy Now: $
List: $166.00
Risers to Grade

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List: $
Integral Membrane Clamping Collar Kit
(for recessed and suspended installations - requires riser FCR1)

Buy Now: $
List: $393.00


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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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