{"product_id":"mcdonnell-miller-133400-model-47-x-mechanical-water-feeder","title":"McDonnell \u0026 Miller 133400 Model 47-X Mechanical Water Feeder","description":"\u003cp\u003eThis mechanical water feeder provides reliable, automatic water level control for steam heating boilers, helping to prevent low-water conditions that can damage equipment. The \u003cstrong\u003eMcDonnell \u0026amp; Miller 133400\u003c\/strong\u003e, also known as the \u003cstrong\u003eModel 47-X\u003c\/strong\u003e, is designed for high-performance fluid management without the inclusion of quick hook-up fittings, making it an ideal choice for direct-piped installations.\u003c\/p\u003e\u003cp\u003eOperating on a gravity-fed buoyancy principle, the feeder utilizes a precision-engineered internal float mechanism that detects water level fluctuations. As the water level drops, the valve assembly opens to allow make-up water to enter the system until the desired set point is achieved, ensuring optimal system stability and protection.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Regulation:\u003c\/strong\u003e Maintains consistent water levels during daily boiler cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Engineered to withstand the rigors of high-temperature steam environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Versatility:\u003c\/strong\u003e Designed for permanent, secure piping configurations in commercial and residential steam applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily intended for low-pressure steam boilers requiring consistent, automatic make-up water replenishment. Always ensure the system is properly isolated and drained before attempting to remove or replace existing feeder components.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125816393822,"sku":"133400","price":1114.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/133400_image_537cd90a-bfec-4977-9042-54b4aebffe4c.png?v=1786038359","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-133400-model-47-x-mechanical-water-feeder","provider":"National Boiler Supply","version":"1.0","type":"link"}