Compatibility assurance: Specifically designed for GSWH2 tankless water heaters, this water flow sensor integrates smoothly with your existing installation and maintains flow sensing performance. Brass construction: Made from brass, this sensor resists rust and corrosion, delivering reliable operation in hard or mineralrich water conditions. Easy installation: Quick, tool replacement of the old sensor; minimizes downtime and requires no special tools or expertise. Exact replacement part: Part number 2022107584 guarantees a precise fit and full functionality for GSWH2 tankless systems. Use scenarios: Replacing a failed flow sensor in an active GSWH2 setup to restore accurate flow readings and protect heater performance. Upgrading during routine maintenance in homes with hard water to prevent sensor corrosion and false readings. installation of a GSWH2 tankless unit to ensure proper flow sensing from first use.