{"product_id":"mcdonnell-miller-149600-67-g-mechanical-low-water-cut-off","title":"McDonnell \u0026 Miller 149600 67-G Mechanical Low Water Cut-Off","description":"\u003cp\u003eProtect your steam heating system from dangerous low-water conditions with the \u003cstrong\u003eMcDonnell \u0026amp; Miller 149600 67-G\u003c\/strong\u003e mechanical low water cut-off. This robust safety device serves as a primary control to monitor boiler water levels and prevent dry firing, ensuring your equipment operates safely and efficiently throughout the heating season.\u003c\/p\u003e\u003cp\u003eThe 67-G utilizes a reliable float-operated switch mechanism that is specifically designed for quick, positive action when water levels drop below a critical threshold. Once activated, the device breaks the electrical circuit to the burner, effectively shutting down the system until the water level is safely restored.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Monitoring:\u003c\/strong\u003e Prevents catastrophic boiler damage from low-water firing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable Operation:\u003c\/strong\u003e Features a time-tested mechanical design for long-term durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e Engineered for seamless compatibility with standard residential and commercial steam boilers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for steam heating boilers in residential and light commercial settings, providing essential automatic protection against boiler dry-firing and potential system failure.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125829009502,"sku":"149600","price":624.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/149600_image_81fdbec0-b763-4930-94ee-bd7120ad5801.png?v=1786039144","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-149600-67-g-mechanical-low-water-cut-off","provider":"National Boiler Supply","version":"1.0","type":"link"}