{"product_id":"mcdonnell-miller-163100-93-7b-m-low-water-cut-off-and-pump-controller","title":"McDonnell \u0026 Miller 163100 93-7B-M Low Water Cut-Off and Pump Controller","description":"\u003cp\u003eProtect your commercial steam boiler system against damage with the reliable McDonnell \u0026amp; Miller 93-7B-M. This essential component, identified by part number \u003cstrong\u003e163100\u003c\/strong\u003e, serves as a dual-function low water cut-off and pump controller, designed to maintain optimal water levels and prevent burner operation during low-water conditions.\u003c\/p\u003e\u003cp\u003eThe unit utilizes a heavy-duty float mechanism that reacts precisely to changes in water levels within the boiler vessel. When the water level drops, the switch activates the secondary pump controller circuit to replenish the system, while simultaneously providing a safety cutoff to prevent thermal stress and internal damage to the heat exchanger.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Switching:\u003c\/strong\u003e Reliable mechanical contact operation for consistent boiler cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Functionality:\u003c\/strong\u003e Integrated pump control and low-water safety cutoff in one robust assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Built for the demands of industrial and commercial steam heating applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for industrial steam boilers, commercial heating systems, and high-pressure process steam vessels requiring precise water management and integrated safety monitoring.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125872558174,"sku":"163100","price":2321.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/163100_image_a032dd67-7624-418c-9774-15a425caed79.png?v=1786042002","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-163100-93-7b-m-low-water-cut-off-and-pump-controller","provider":"National Boiler Supply","version":"1.0","type":"link"}