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/ 70 lbs
Super-Capacity, 15 GPM Hydromechanical Grease Interceptor
Third-party certified to retain more than four times the amount of grease (in pounds) than the flow rating in gallons per minute (GPM).
The compact design of the GB1-CT makes it a perfect fit for under-the-sink installations. It can be installed above grade (on the floor) or buried below grade (compatible with FCR1 riser to bring system to grade). The triple outlet feature allows for installation flexibility, including the ability to connect an unused outlet for remote pumpout (PP1 compatibility).
Rugged polyethylene tank body
Built-in Flow Control Cartridge™, easy to remove for cleaning (Learn More)
Includes plain end fittings to connect to 2" and 3" pipe
This unit is factory rated only. Please ensure unit meets local ordinance before specifying.
GB1 — 20/25 GPM, 10-gallon indoor grease interceptor
Flow Rate/Grease Capacity
15 GPM (0.9 L/s) / 70 lbs (31.7 kg)
Solids Capacity 1.3 gal (4.9 L)
Liquid Capacity 10 gal (37.9 L)
Weight 39 lbs (17.7 kg)
Installation Location Indoor
GREAT BASIN™ FEATURE
Three outlets available for installation flexibility and optional pumpout port connection.
On the tank
Product ID label with technical and certification details (also available inside the cover adapter)
"Made By" label featuring one of our product builders and the date your interceptor was built
Frequently Asked Questions
We do not recommend using these units in connection to a food waste grinder due to their small solids containment capacity. We recommend using one of the Great Basin™ indoor/outdoor units that have solids containment capacity of 20% or more of the unit's liquid volume.
These units can be used with a dishwasher. If the dishwasher will have a discharge temperature higher than 150 degrees Fahrenheit, the system will require a drain tempering valve to reduce the water temperature.
If you are required to have an air gap, it is highly recommended that the air gap be preceding the unit due to smell mitigation from the contents and waste water coming from inside the unit.
These units do not require a fixture vent. The internal design of the unit will ensure proper function without a fixture vent. Any venting to the piping connected to our unit is at the discretion of the local authority.
We do not have a heavy-duty cover option for our indoor units. If your installation requires a higher-load rated cover, you will need to install a GB-50 or larger.
There should be a minimum of 6" between the units when installed in series. In a buried application, this space will ensure there is enough backfill in between the units.
Due to the low head pressure in this scenario, the first solution is to remove the internal flow control. This low head pressure ensures the unit will not exceed its certified flow rate. If that doesn’t solve the issue, the next solution is to add a flow restrictor to the tailpiece of the fixture.
Even though the cover is circular, there is a proper orientation to ensure the cover is completely seated. The Schier logo should run parallel to the long side of the unit.