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Rain Bird flow sensors send flow data to central control or stand-alone controller systems for precise and accurate flow monitoring. Rain Bird flow sensors are available with NPT and BSP ends.

Rain Bird flow sensors enable you to capitalize on the advantages of Flow Management functionality. Use Rain Bird Flow Sensors with Rain Bird Maxicom², SiteControl and IQ v2.0 central control applications, or in standalone systems using Rain Bird ESP-LXD, ESP-LXME and ESP-LXMEF controllers, to benefit from:

  • Flo-Watch™. Flo-Watch constantly monitors for low flow and excess flow conditions caused by broken lines or heads, automatically quarantines and shuts down the problem area, and continues to irrigate non-affected areas. Saves water, saves plant material, and enables irrigation programs to continue and complete.
  • Learned Flow. The controller automatically learns station flow rates resulting in more accurate flow rates. The automatic collection prevents you from having to manually enter data from drawings, or physically visiting each valve to collect flow data and manually entering the data into a controller.
  • FloManager®. FloManager determines the optimal station irrigating sequence. The system runs at its fullest capacity until programs are complete. The controller automatically selects and runs multiple valves at the same time within hydraulic parameters, allowing for shorter water windows.
  • Simple six-bladed impeller design
  • Designed for outdoor or underground applications
  • Reliable stainless steel construction
  • Fully compatible with ESP-LXD, ESP-LXMEF or IQ Central Control
  • Sends flow data for precise and accurate flow monitoring

Add an extra level of security and peace of mind to your irrigation system with these reliable, easy-to-use flow sensors—all fully compatible with the ESP-LXD Decoder Controller or ESP-LXMEF Controller and IQ™ v2.0 Central Control. Rain Bird® Flow Sensors send flow data to central control or stand-alone control systems for precise and accurate flow monitoring. Choose from a variety of sizes, operating ranges and types for the solution that best meets your needs.


  • Width: 7.13 in
  • Diameter: 3.0 in

"Model FS350B & FS350SS Flow Sensors
The flow sensor shall be an insertion type with a nonmagnetic, spinning impeller (paddle wheel) as the only moving part. The sensor sleeve will be brass (or 316 stainless steel) with the sensor housing being PPS. The impeller shall be glassfilled nylon or Tefzel with a UHMPWE or Tefzel sleeve. The shaft material shall be tungsten carbide. The sensor will be supplied with a 2” (50mm) NPT adapter for installation into any commercially available weld-on fitting or pipe saddle. The adapter shall have two, ethylenepropylene O-Rings. The sensor electronics will be potted in an epoxy compound designed for prolonged immersion. Electrical connections shall be 2 single conductor 18AWG leads 48 inches (1,2 meters) long. Insulation shall be direct burial “UF” type colored red for the positive lead and black for the negative lead. Insertion of the sensor into any pipe size shall be 11⁄2” (40mm) from the inside wall to the end of the sensor housing. The sensor shall shall be capable of operating in line pressures up to 400 psi (27,5 bars) and liquid temperatures up to 220° F (105°C), and operating in flows of 1⁄2 foot (0,15 meters) per second to 30 feet (9,2 meters) per second. This flow sensor shall be Rain Bird Model FS350B (FS350SS)."

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