Selecting & Specifying Passive Grease Interceptors

Passive Grease Interceptors (PGI) help food industries comply with the EPA Sewer

Pretreatment Regulations. PGIs are gravity grease interceptors designed to intercept

and remove large quantities of sewer clogging FOG and oily food waste before it is

discharged in a municipal wastewater treatment system. PGI sizing and construction

conforms to recognized plumbing codes and meets, or exceeds, most municipal FOG

discharge requirements. They can be sized for greater volumes, storage capacity and

retention times up to 30 minutes.


Our standard PGIs are constructed from mild carbon steel, meeting ASTM specifications,

for superior structural strength and impermeability. Highland Tank's PGIs don’t crack,

leak or collapse under hydrostatic pressure. They are water tight and pressure testable

for leaks in both the factory and the field.


Advanced Corrosion Protection

Rigid specifications are followed to assure complete internal and external corrosion

protection including Highland Tank's HighGuard UL-1746 approved protective

polyurethane coating. An additional acid-resistant internal polyurethane lining assures

years of continuous service.


Aboveground cylindrical or rectangular interceptors and custom designs are also

available so that you can tailor volumes, compartments, inlets, outlets or baffles

to satisfy specific code requirements. 

Single Basin

Double Basin

Triple Basin