Passive Grease Interceptor How It Works

The High-LINK® Integrated Systems couples Highland Tank’s superior steel tank products with state-of-the-art electronic management devices and proprietary software to provide real-time data to decision-makers. With our High-LINK® applications you will have the power to optimize the usage and transfer of all your liquid operations. Learn more here.

underground cylindrical
Passive Grease Interceptor How It Works
View diagram for Single-basin units
Single collection chamber with sludge baffle – simple knock-out design
Single Basin PGI
View diagram for Double-basin units
Two collection chambers and a sludge baffle. Conforms to IAPMO/ANSI Z1001
Double-Basin PGI
View diagram for Triple-basin units
Three basin unit for enhanced removal. Third chamber can be equipped with an effluent pump when gravity flow is not an option.
Triple-Basin PGI

aboveground rectangular
Passive Grease Interceptor How It Works
single-basin units | click for diagram
Single collection chamber with sludge baffle
Aboveground Rectangular Single-Basin Passive Grease Interceptor
double-basin units | click for diagram
Two chamber swithchback baffle design with sludge baffle
Aboveground Rectangular Double-Basin Passive Grease Interceptor
triple-basin units | click for diagram
FOG and solids are trapped in first compartment – chambers two and three capture remaining grease
Aboveground Rectangular Triple-Basin Passive Grease Interceptor

aboveground cylindrical
Passive Grease Interceptor How It Works
double-basin units | click for diagram
Two collection chambers and a sludge baffle. Conforms to IAPMO/ANSI Z1001
Aboveground Cylindrical Double-Basin Passive Grease Interceptor
triple-basin units | click for diagram
Three basin unit for enhanced removal. Third chamber can be equipped with an effluent pump when gravity flow is not an option.
Aboveground Cylindrical Triple-Basin Passive Grease Interceptor

florida pgi
Highland Tank passive grease interceptors comply with State of Florida Department of Health, Standards for On-site Sewage Treatment and Disposal Systems, 64E-6.013: Construction Materials and Standards for Treatment Receptacles. These grease interceptors are designed to meet site specific requirements.
Click icon below for drawings