Harwil Model Q-16 Flow Switch

Harwil^® type Q-16 switches are used to signal, start, or stop electronically operated equipment when flow or no-flow conditions occur. Harwil's patented elastomeric sealing system is superior to the metal bellows that are subject to metal fatigue and corrosion. This seal system has been field-proven for over a decade.

The stainless steel version makes it perfect for drinking and potable water.  The stainless steel drinking water flow switch makes it a great alternative to other non approved brass flow switches out in the market.  In addition, multiple size paddles come standard which allows the user to buy one switch that will fit multiple pipe sizes as well as various flow rates.