Irritrol FS-B150 1-1/2 in Brass Flow Sensor (NPT Tee)

The Irritrol FS-B150 is a 1-1/2 in. brass impeller flow sensor designed for tee-mounting on irrigation mains. Engineered for reliable flow measurement and leak detection, this wired, NPT-female sensor works with Rain Master and Sentar controllers to monitor point-of-connection and individual station flow and to trigger master-valve shutdown on abnormal flow events.

• 1-1/2 in. NPT female brass tee with cast bronze body for durability and corrosion resistance.
• Impeller-style sensor module with a suggested operating range of 4–80 GPM for accurate measurement.
• Maximum operating pressure up to 400 PSI for demanding commercial and residential systems.
• Wired connector compatible with Rain Master Eagle and Sentar II controllers for flow monitoring and fault shutdown.
• Detects line breaks and leaks and can command the controller to close the master valve to limit landscape damage.
• K-factor and offset values provided for precise volumetric calculations and field calibration.

Easy to install inline at the point of connection, the FS-B150 is suitable for irrigation systems that require dependable flow sensing and automated protection. Refer to the included sell sheet and manufacturer documentation for detailed K-factor, wiring diagrams, calibration steps, and installation guidance. For controller compatibility or complex installations, consult a licensed irrigation technician.