{"product_id":"brass-flow-sensor-insert","title":"Rain Bird FS350B Brass Insert Flow Sensor for 3-inch Pipes - FS350B","description":"\u003ch2\u003eRain Bird FS350B Brass Insert Flow Sensor for 3-inch Pipes - FS350B\u003c\/h2\u003e\n\u003cp\u003eRain 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.\u003c\/p\u003e\n\u003cp\u003eThis 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.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid brass construction:\u003c\/strong\u003e corrosion-resistant brass and bronze hardware designed for long service life in outdoor and underground installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert-type design:\u003c\/strong\u003e 5.25\" sleeve length and included bronze 2\" NPT hex adapter allow installation into a wide range of pipe types and wall thicknesses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh accuracy:\u003c\/strong\u003e ±1% full-scale accuracy (model dependent) for dependable flow measurement and recording.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust operating ratings:\u003c\/strong\u003e brass models tested to 400 psi and up to 220 F (105 C) for demanding irrigation and commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable sensing:\u003c\/strong\u003e six-bladed impeller element with preamplified pulse output; two 18 AWG stranded leads (48\" length) for secure electrical connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eController compatibility:\u003c\/strong\u003e works with Rain Bird ESP-LXD, ESP-LXMEF, IQ central control systems and can be used with pulse transmitters and flow monitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eServiceable and calibratable:\u003c\/strong\u003e replacement inserts available (FSTINSERT) and K-factor\/offset calibration data provided in Rain Bird documentation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1mwx2bj\" data-start=\"187\" data-end=\"310\"\u003e\n\u003cstrong data-start=\"189\" data-end=\"223\"\u003eBuilt for 3\" and larger mains:\u003c\/strong\u003e Ideal for commercial irrigation systems, sports fields, and municipal water networks\u003c\/li\u003e\n\u003cli data-section-id=\"q11poo\" data-start=\"311\" data-end=\"461\"\u003e\n\u003cstrong data-start=\"313\" data-end=\"351\"\u003eDurable brass insert construction:\u003c\/strong\u003e Engineered for long service life in underground and outdoor installations with high resistance to corrosion\u003c\/li\u003e\n\u003cli data-section-id=\"51r6v1\" data-start=\"462\" data-end=\"598\"\u003e\n\u003cstrong data-start=\"464\" data-end=\"491\"\u003eAccurate flow tracking:\u003c\/strong\u003e Six-blade impeller design delivers reliable pulse output for precise flow measurement and leak detection\u003c\/li\u003e\n\u003cli data-section-id=\"13f8frd\" data-start=\"599\" data-end=\"746\"\u003e\n\u003cstrong data-start=\"601\" data-end=\"630\"\u003eHigh-performance ratings:\u003c\/strong\u003e Handles demanding conditions (up to ~400 psi and high-temperature environments) suitable for professional systems\u003c\/li\u003e\n\u003cli data-section-id=\"1t3130s\" data-start=\"747\" data-end=\"915\"\u003e\n\u003cstrong data-start=\"749\" data-end=\"780\"\u003eSmart system compatibility:\u003c\/strong\u003e Integrates with Rain Bird central control platforms for advanced features like flow monitoring, leak alerts, and automated shutdowns\u003c\/li\u003e\n\u003cli data-section-id=\"16r5ho\" data-start=\"916\" data-end=\"1038\"\u003e\n\u003cstrong data-start=\"918\" data-end=\"950\"\u003eMaintenance-friendly design:\u003c\/strong\u003e Insert-style sensor allows servicing or replacement without major pipe reconstruction\u003c\/li\u003e\n\u003cli data-section-id=\"188otwo\" data-start=\"1039\" data-end=\"1169\"\u003e\n\u003cstrong data-start=\"1041\" data-end=\"1083\"\u003eEfficiency-focused irrigation control:\u003c\/strong\u003e Enables better water management through real-time flow data and system optimization\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\n\u003cbr\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:7c8516ad-67b2-4ad6-ab3f-fb0a9f2bacbd-1\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:7c8516ad-67b2-4ad6-ab3f-fb0a9f2bacbd-1\" data-turn-id-container=\"request-WEB:7c8516ad-67b2-4ad6-ab3f-fb0a9f2bacbd-1\" data-testid=\"conversation-turn-4\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"9fae45df-33a8-45d3-8fb3-a172bb97ba45\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"185\"\u003e\u003cstrong data-start=\"0\" data-end=\"57\"\u003eQ: What is the Rain Bird FS350B flow sensor used for?\u003c\/strong\u003e\u003cbr data-start=\"57\" data-end=\"60\"\u003eA: It measures and reports water flow in irrigation systems for accurate monitoring, leak detection, and system optimization.\u003c\/p\u003e\n\u003cp data-start=\"187\" data-end=\"320\"\u003e\u003cstrong data-start=\"187\" data-end=\"239\"\u003eQ: What pipe size is the FS350B compatible with?\u003c\/strong\u003e\u003cbr data-start=\"239\" data-end=\"242\"\u003eA: It is designed for 3-inch and larger pipelines (insert-style installation).\u003c\/p\u003e\n\u003cp data-start=\"322\" data-end=\"489\"\u003e\u003cstrong data-start=\"322\" data-end=\"365\"\u003eQ: What material is the FS350B made of?\u003c\/strong\u003e\u003cbr data-start=\"365\" data-end=\"368\"\u003eA: Durable brass and bronze construction for long-term underground and outdoor use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"491\" data-end=\"626\"\u003e\u003cstrong data-start=\"491\" data-end=\"550\"\u003eQ: Is the FS350B compatible with Rain Bird controllers?\u003c\/strong\u003e\u003cbr data-start=\"550\" data-end=\"553\"\u003eA: Yes, it works with ESP-LXD, ESP-LXMEF, and IQ central control systems.\u003c\/p\u003e\n\u003cp data-start=\"628\" data-end=\"759\"\u003e\u003cstrong data-start=\"628\" data-end=\"668\"\u003eQ: How does the FS350B measure flow?\u003c\/strong\u003e\u003cbr data-start=\"668\" data-end=\"671\"\u003eA: It uses a six-blade impeller that generates pulse signals proportional to water flow.\u003c\/p\u003e\n\u003cp data-start=\"761\" data-end=\"912\"\u003e\u003cstrong data-start=\"761\" data-end=\"811\"\u003eQ: Can the FS350B detect leaks or pipe breaks?\u003c\/strong\u003e\u003cbr data-start=\"811\" data-end=\"814\"\u003eA: Yes, it enables flow monitoring features that help detect abnormal high or low flow conditions.\u003c\/p\u003e\n\u003cp data-start=\"914\" data-end=\"1043\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"914\" data-end=\"965\"\u003eQ: Is it suitable for underground installation?\u003c\/strong\u003e\u003cbr data-start=\"965\" data-end=\"968\"\u003eA: Yes, it is designed for direct burial and harsh irrigation environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:a0a73f2c-f3c9-42d0-9958-01fbde1d827a-39\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:a0a73f2c-f3c9-42d0-9958-01fbde1d827a-39\" data-turn-id-container=\"request-WEB:a0a73f2c-f3c9-42d0-9958-01fbde1d827a-39\" data-testid=\"conversation-turn-80\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"e774fbb0-ab81-4b2d-989b-04829991f4f7\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cul data-start=\"0\" data-end=\"1208\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"mh97sc\" data-start=\"0\" data-end=\"76\"\u003e\u003cstrong data-start=\"2\" data-end=\"74\" data-is-only-node=\"\"\u003eRain Bird FS350B Brass Insert Flow Sensor (for ~3\" and larger pipes)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1e8mei7\" data-start=\"77\" data-end=\"170\"\u003eHeavy-duty \u003cstrong data-start=\"90\" data-end=\"124\"\u003ebrass insert-style flow sensor\u003c\/strong\u003e used in large commercial irrigation systems\u003c\/li\u003e\n\u003cli data-section-id=\"dtmuqy\" data-start=\"171\" data-end=\"257\"\u003eDesigned for \u003cstrong data-start=\"186\" data-end=\"230\"\u003eaccurate flow measurement and monitoring\u003c\/strong\u003e in pressurized mainlines\u003c\/li\u003e\n\u003cli data-section-id=\"n5utqi\" data-start=\"258\" data-end=\"387\"\u003eUses a \u003cstrong data-start=\"267\" data-end=\"294\"\u003e6-blade impeller design\u003c\/strong\u003e to generate pulse signals proportional to water flow \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1jktfsp\" data-start=\"388\" data-end=\"516\"\u003eFully compatible with \u003cstrong data-start=\"412\" data-end=\"476\"\u003eRain Bird ESP-LXD, ESP-LXMEF, and IQ central control systems\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jwnlv\" data-start=\"517\" data-end=\"616\"\u003eProvides \u003cstrong data-start=\"528\" data-end=\"614\"\u003ereal-time flow data for leak detection and system protection (Flo-Watch functions)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"4airw0\" data-start=\"617\" data-end=\"758\"\u003eInsert design allows installation into \u003cstrong data-start=\"658\" data-end=\"718\"\u003e3-inch and larger pipelines using a brass adapter sleeve\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hxpgxl\" data-start=\"759\" data-end=\"912\"\u003eRated for \u003cstrong data-start=\"771\" data-end=\"837\"\u003ehigh-pressure, underground, or outdoor commercial applications\u003c\/strong\u003e (rugged brass\/bronze construction) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"15w5jhd\" data-start=\"913\" data-end=\"999\"\u003eUsed in \u003cstrong data-start=\"923\" data-end=\"997\"\u003egolf courses, stadiums, farms, and large landscape irrigation networks\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h5qd8q\" data-start=\"1000\" data-end=\"1104\"\u003eSupports \u003cstrong data-start=\"1011\" data-end=\"1102\"\u003eadvanced irrigation analytics (learned flow, zone diagnostics, and shutdown protection)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"2cz63l\" data-start=\"1105\" data-end=\"1208\" data-is-last-node=\"\"\u003eBest suited for \u003cstrong data-start=\"1123\" data-end=\"1208\" data-is-last-node=\"\"\u003ecentralized smart irrigation systems where precision water management is critical\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Rain Bird","offers":[{"title":"Default Title","offer_id":45805107282111,"sku":"FS350B","price":905.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/FS350B-2_abe6ba32-a01d-41ca-97e7-21773d631f25.jpg?v=1782941245","url":"https:\/\/www.mybackyardzone.com\/products\/brass-flow-sensor-insert","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}