Rain Bird FS350B Brass Insert Flow Sensor for 3-inch Pipes

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Rain Bird FS350B is a durable brass insert flow sensor engineered for reliable flow monitoring in irrigation and industrial piping. The insert-style sensor installs into 3-inch and larger pipes and transmits precise flow data to Rain Bird controllers or standalone transmitters for accurate system monitoring and leak detection. Solid brass construction: corrosion-resistant brass and bronze hardware designed for long service life in outdoor and underground installations. Insert-type design: 5.25" sleeve length and included bronze 2" NPT hex adapter allow installation into a wide range of pipe types and wall thicknesses. High accuracy: ±1% full-scale accuracy (model dependent) for dependable flow measurement and recording. Robust operating ratings: brass models tested to 400 psi and up to 220 F (105 C) for demanding irrigation and commercial applications. Reliable sensing: six-bladed impeller element with preamplified pulse output; two 18 AWG stranded leads (48" length) for secure electrical connection. Controller compatibility: works with Rain Bird ESP-LXD, ESP-LXMEF, IQ central control systems and can be used with pulse transmitters and flow monitors. Serviceable and calibratable: replacement inserts available (FSTINSERT) and K-factor/offset calibration data provided in Rain Bird documentation. This FS350B unit is supplied as an insert-type sensor for 3" and larger lines and is ideal where durable brass construction and precise flow reporting are required. Consult the included Rain Bird technical documents and K-factor tables for installation details, recommended pipe selection, and calibration values. For systems with long wire runs or central-control integrations, follow the Rain Bird wiring and surge protection recommendations in the product manuals. Show more