Suttner ST-5 Vertical Mount Flow Switch

The ST-5 Flow Switch, part number 200005542, is a robust, high-pressure flow switch designed for vertical mounting in high-pressure water lines, suitable for applications requiring pressures up to 4380 PSI. This "normally open" flow switch operates uniquely, featuring a free-floating brass magnet and a brass reed switch mechanism that enhances its reliability and durability under various conditions.

The innovative design allows it to be mounted further downstream in the pumping system compared to traditional vacuum switches, significantly reducing potential leak points that could compromise the system. The switch activates when water flow initiates-such as when a spray gun trigger is squeezed-moving the magnet forward and closing the reed switch to allow electrical continuity. Once the flow ceases, the magnet returns to its original position, opening the switch and stopping electrical continuity.

The ST-5 Flow Switch is particularly beneficial for prolonging pump seal life, as it eliminates the need to restrict water flow to the pump. It also features an easy-to-replace reed switch housed in a vacuum-sealed glass tube for protection against corrosive chemicals, providing a reliable and maintenance-friendly solution in demanding environments.