The Triangle Tube INSRKIT58 Flow Sensor Kit is a precision component designed to monitor water flow within hydronic HVAC systems, particularly compatible with Triangle Tube boilers. It detects flow rate and communicates with the control system to ensure proper operation, efficiency, and safety. By verifying adequate circulation, it helps prevent overheating and system damage. This sensor kit is ideal for residential and commercial boiler applications, improving performance, enhancing energy efficiency, reducing downtime, and supporting consistent heating output for optimal system reliability.