{"product_id":"mcdonnell-miller-143600-series-64-mechanical-low-water-cut-off","title":"McDonnell \u0026 Miller 143600 Series 64 Mechanical Low Water Cut Off","description":"\u003cp\u003eProtect your boiler system from dry firing and potential damage with the reliable \u003cstrong\u003e143600\u003c\/strong\u003e McDonnell \u0026amp; Miller Series 64 mechanical low water cut off. This essential control device is engineered for steam boilers to monitor water levels and automatically shut down the burner if levels drop below a safe operating point, ensuring the integrity of your heating infrastructure.\u003c\/p\u003e\u003cp\u003eThe mechanism utilizes a reliable float-actuated switch design that responds instantly to changes in water level. As the float drops within the chamber, it triggers the switch to break the electrical circuit to the burner, preventing dangerous heat buildup and preserving the longevity of your boiler heat exchanger.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Monitoring:\u003c\/strong\u003e Provides accurate, automatic electrical shutdown during low water conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRugged Construction:\u003c\/strong\u003e Built to withstand the rigors of high-temperature hydronic environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified Maintenance:\u003c\/strong\u003e Features a straightforward design for ease of inspection and serviceability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustry Standard:\u003c\/strong\u003e Compatible with a wide range of steam heating systems requiring robust level control.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and residential steam boiler applications where reliable, non-electronic mechanical water level monitoring is required to maintain operational safety.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125824028766,"sku":"143600","price":694.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/143600_image_d88f39a6-1967-4bb0-8a31-56f0d53b10e4.png?v=1786038961","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-143600-series-64-mechanical-low-water-cut-off","provider":"National Boiler Supply","version":"1.0","type":"link"}