Overfill Alert Gauges

Overfill Alert Gauge - Overfill Prevention Gauge for Aboveground Storage Tanks (AST Gauge)


The Overfill Alert Gauge is a high level visual gauge designed to visually alert you that your AST (tank) is near full. This overfill monitor's simple pop up mechanical design promotes easy installs, maximum durability, and low up front costs.

Also, by purchasing our audible Overfill Alarm Accessory, you can turn your visual overfill gauge into an audible overfill alarm.

The Overfill Gauge has also been approved by the Florida Department of Environmental Protection for overfill prevention on AST's.  Florida documents are at the bottom of this page.

Overfill Alert AST Gauge Materials Options

Standard Overfill Alert Gauge
Standard Overfill Alert Gauge

This model of pop up overfill alert gauge (Standard Model) has standard galvanized wetted rods, polypropylene floats, and aluminum bushing.

This mechanical overfill alert gauge is custom made in house to fit your overfill depth requirements. Our flexible production process allows for custom sizes that range from 6 inches to 76 inches in total length.

Type OF-S1 overfill gauge
Standard Overfill Alert Gauge

This model of pop up overfill alert gauge (stainless level one) has standard stainless steel wetted rods, polypropylene floats, and aluminum bushing.

This mechanical overfill alert gauge is custom made in house to fit your overfill depth requirements. Our flexible production process allows for custom sizes that range from 6 inches to 76 inches in total length.

Type OF-S2 overfill gauge
Type OF-S2 overfill gauge

This model of pop up overfill alert gauge (stainless level two) has standard stainless steel wetted rods, stainless steel floats, and aluminum bushing.

This mechanical overfill alert gauge is custom made in house to fit your overfill depth requirements. Our flexible production process allows for custom sizes that range from 6 inches to 40 inches in total length.

Type OF-S3 All Stainless overfill gauge
Type OF-S2 overfill gauge

This model of pop up overfill alert gauge (stainless level three) has standard stainless steel wetted rods, stainless steel floats, and stainless steel bushing.

This mechanical overfill alert gauge is custom made in house to fit your overfill depth requirements. Our flexible production process allows for custom sizes that range from 6 inches to 40 inches in total length.

Type po- All Plastic overfill gauge
Type PO- All Plastic overfill gauge

This model of pop up overfill alert gauge (all plastic type PO) has the glass calibration, a pvc gauge guard, pvc bushing, Peek plastic rods, and polypropylene float.

This mechanical overfill alert gauge is custom made in house to fit your overfill depth requirements. Our flexible production process allows for custom sizes that range from 6 inches to 40 inches in total length.