Overfill Alert Gauge 1.5" NPT Opening - Model OF-1.5-12

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. Standard Overfill Alert Gauge Construction – Plastic Calibration, HDPE Lock Nut, Duro Nitrile Gasket, Aluminum Bushing, Aluminum Rods, Polypropylene Floats. Gauge comes with a 1.5'' NPT opening & 12'' tank depth.