Suitable for Boiler Accessories Water Flow Sensor Switch Key benefits Prevents dry firing and improves safety: detects water flow and provides a reliable switch signal to interlock boilers, pumps, and controls so equipment only runs when coolant or feed water is present. Simple integration: designed to work with boiler control circuits and auxiliary equipment, giving installers a straightforward way to add flowbased protection or automation. Reliable operation: delivers consistent on/off switching based on flow conditions to reduce false starts, protect components, and support efficient system operation. What it does (functionality) Senses the presence and direction of water flow and converts that signal into a drycontact or electrical switch output usable by boiler controllers, relays, or pump starters. Activates at a set minimum flow threshold to confirm circulation before enabling heat sources or pumps. Compatibility and installation Intended for use as a boiler accessory and compatible with typical heating systems, hot water boilers, and circulation loops. Compact form factor designed for inline or accessory mounting locations common to boiler installations; suitable for retrofit and install scenarios. Electrical output connects to standard control inputs; installation should follow local wiring and safety codes and be performed by qualified personnel. Key attributes Function: water flow detection with switch output for control and safety interlocks. Compatibility: suited for boiler systems, circulation pumps, heat exchangers, and related HVAC/hydronic equipment. Size and form: compact, installerfriendly design to fit standard accessory ports and piping layouts (verify physical dimensions and port size before ordering). Material and durability: built for boiler system environments; constructed from materials selected to withstand typical heating system water conditions (verify material specifics per product version). Performance: provides dependable switching at the designed flow activation point to protect equipment and support automated control logic (refer to product documentation for exact activation thresholds and electrical ratings). Use cases Boiler safety interlock: prevent burner ignition unless adequate water flow is detected, protecting the heat exchanger and reducing risk of damage. Pump control and sequencing: enable or disable circulation pumps based on flow status to prevent dryrunning and to support zone control strategies. Domestic hot water recirculation: monitor loop flow to control recirculation pump operation, improving system efficiency and ensuring instant hot water without unnecessary run time. Installation notes and recommendations Confirm compatibility with your boiler control inputs and verify the electrical rating, switch type, and port size prior to installation. Install in accordance with the system schematic and local codes; position sensor where it can accurately sense flow and avoid air pockets. Periodic inspection and maintenance are recommended to ensure moving sensing elements and reliable operation over time. This water flow sensor switch is designed to be a practical, safetyfocused accessory for boiler and hydronic systems, helping protect equipment and enabling dependable control based on actual water flow.