500 square feet or approximately 1

The standard EFL is a thermal link only

Designed for a 95-degree rotation

you would typically look at the MS8104 series

Dwyer Instruments V4-2-U Flow Switch 340155-7024 500 square feet or approximatelyThe Dwyer Instruments V4 2 U Flow Switch is a heavy duty vane operated flow switch designed for reliable protection against flow loss in critical HVACR and industrial pipelines. This Flotect V4 series model features a brass body machined from bar stock for leak proof integrity and a universal vane that is field adjustable to accommodate pipe sizes from 1. 5 inches up to 20 inches. Utilizing a unique magnetically actuated switching design, this unit