Rain Bird FS300P 3" PVC Tee Flow Sensor, 3-inch - FS300P
The Rain Bird FS300P 3" PVC Tee Flow Sensor delivers reliable, field-proven flow monitoring for irrigation systems. Its six-bladed impeller design provides stable readings across a wide flow range, and it integrates directly with Rain Bird controllers for automated flow management.
Use the FS300P to enable Flo-Watch, Learned Flow and other controller features that detect broken lines, quarantine problem zones and optimize irrigation scheduling. Consult Rain Bird product documents for K-factors, wiring, and transmitter options before installation.
Features
- Model: FS300P - 3" (75mm) PVC tee body engineered for outdoor or underground use.
- Accuracy: ±1% full-scale accuracy using a simple six-bladed impeller for consistent measurement.
- Durability: PVC construction rated for typical irrigation conditions; plastic models withstand up to 100 psi and temperatures to 140°F (60°C).
- Compatibility: Works with ESP-LXD, ESP-LXMEF, IQ central control, Maxicom², SiteControl and other Rain Bird systems.
- Connections: Available with NPT or BSP ends; suitable for both metric and imperial installations.
- Installation & maintenance: Pre-installed tee design for faster fits; compatible replacement inserts and transmitters available.
What our Experts Think
-
Professional irrigation flow control: The Rain Bird FS300P 3" PVC Tee Flow Sensor is designed for accurate flow measurement and system-wide irrigation monitoring in commercial and advanced residential setups.
-
High-accuracy flow detection: Uses a six-bladed impeller design to deliver reliable flow readings, typically around ±1% full-scale accuracy for consistent irrigation data.
-
Built for 3-inch mainlines: Integrated 3" PVC tee body ensures proper inline installation in larger irrigation systems, reducing turbulence and improving measurement stability.
-
Smart irrigation integration: Works with Rain Bird controllers and central control platforms to enable features like flow monitoring, leak detection, and automatic zone shutdown.
-
System protection benefits: Enables “learned flow” and abnormal flow detection, helping prevent water waste, pipe breaks, and irrigation damage.
-
Rugged field-ready construction: PVC body designed for underground or outdoor irrigation environments, with reliable long-term durability under pressure and temperature variation.
-
Best for large-scale irrigation networks: Ideal for golf courses, sports fields, estates, and commercial landscapes where precise flow management is critical.
-
Trade-off reality: Requires compatible Rain Bird control hardware and proper installation conditions—overkill for small residential systems.
Q&A
Q: What is the Rain Bird FS300P 3" PVC Tee Flow Sensor (FS300P)?
A: A professional-grade inline irrigation flow sensor designed to measure and transmit real-time water flow data in 3-inch (75 mm) PVC irrigation lines for monitoring and automation systems.
Q: What does it do?
A: It uses a six-bladed impeller to detect water flow and sends pulse data to compatible Rain Bird controllers for flow monitoring, leak detection, and system optimization.
Q: What systems is it compatible with?
A: Works with Rain Bird advanced controllers such as ESP-LXD, ESP-LXMEF, and IQ Central Control platforms for automated irrigation management.
Q: What are the dimensions?
A: Approximately 6.5" × 6.83" × 4.23" (165 × 173 × 107 mm).
Q: What pressure and temperature does it support?
A: Plastic model systems are typically rated up to ~100 psi and about 140°F (60°C).
Q: What is it used for in irrigation systems?
A: It enables advanced irrigation features like Flo-Watch leak detection, zone-by-zone flow tracking, and automatic system shutdown if abnormal flow is detected.
Q: Is it a replacement or upgrade part?
A: It is usually an upgrade component added to irrigation systems to enable smart monitoring and automation rather than a basic repair part.
Maintenance Tips
- 3-inch (75 mm) PVC tee-type flow sensor for irrigation mainlines
- Uses a six-blade impeller design for stable and accurate flow measurement
- Provides ~±1% full-scale accuracy for precise irrigation monitoring
- Designed for outdoor or underground installation with durable PVC construction
- Compatible with Rain Bird controllers (e.g., ESP-LXD, ESP-LXMEF, IQ systems) for flow monitoring and leak detection
- Enables smart features like Flo-Watch, learned flow, and automatic zone shutdown in case of leaks
- Supports irrigation system optimization by detecting abnormal high or low flow conditions
- Operating range suitable for typical irrigation pressure systems (plastic-rated up to ~100 psi)
- Common use: commercial landscapes, sports fields, and large residential irrigation systems
Damage 
Loss 
Theft 
