{"product_id":"mcdonnell-miller-144703-rb-122e-low-water-cut-off","title":"McDonnell \u0026 Miller 144703 RB-122E Low Water Cut Off","description":"\u003cp\u003eSafeguard your hydronic or steam boiler system from critical failures with the \u003cstrong\u003eMcDonnell \u0026amp; Miller 144703 RB-122E\u003c\/strong\u003e. This essential safety control is designed to detect low water conditions instantly, preventing the boiler from firing when water levels drop below a safe threshold to avoid burner damage and overheating.\u003c\/p\u003e\u003cp\u003eUtilizing a precise electronic sensing mechanism, the \u003cstrong\u003eRB-122E\u003c\/strong\u003e monitors water levels within the boiler vessel. When the water level falls below the probe, the control interrupts the burner circuit, effectively locking out the boiler operation until water levels are safely restored, providing a reliable automated safeguard for your infrastructure.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Shutdown:\u003c\/strong\u003e Prevents dry-firing by cutting power to the burner during low-water events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid-State Reliability:\u003c\/strong\u003e Electronic sensing technology ensures consistent performance with minimal mechanical wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Response Time:\u003c\/strong\u003e Engineered for rapid detection to preserve internal heat exchanger integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and residential steam and hot water boilers requiring dependable low-water protection, secondary boiler safety circuits, and remote water monitoring integrations.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125826584670,"sku":"144703","price":174.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/144703_image_ddf2f2e8-25cd-450e-85f3-ec36dc69ef02.png?v=1786039008","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-144703-rb-122e-low-water-cut-off","provider":"National Boiler Supply","version":"1.0","type":"link"}