{"product_id":"mcdonnell-miller-136900-model-53-mechanical-water-feeder","title":"McDonnell \u0026 Miller 136900 Model 53 Mechanical Water Feeder","description":"\u003cp\u003eEnsure consistent and reliable boiler operation with the \u003cstrong\u003eMcDonnell \u0026amp; Miller 136900\u003c\/strong\u003e, a high-quality mechanical water feeder designed for the \u003cstrong\u003eModel 53\u003c\/strong\u003e series. This unit automatically regulates make-up water supply to the steam boiler, preventing low-water conditions that can lead to costly equipment downtime or system damage.\u003c\/p\u003e\u003cp\u003eThe mechanism operates through a float-actuated valve assembly that detects dropping water levels inside the boiler vessel. As the water line descends, the integrated float drops, opening the feed valve to allow precise water replenishment until the appropriate level is restored, ensuring the integrity and safety of the hydronic system.\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 lines without manual intervention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Engineered to withstand the demanding pressures of steam heating environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Designed specifically for direct compatibility with the 53-series feeder housing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Recommended for use in commercial and industrial steam heating boilers requiring dependable low-water cutoff and automated water makeup capabilities.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125818130526,"sku":"136900","price":1579.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/136900_image_ecee6c7c-3fb0-49c2-aed9-582c006da2f2.png?v=1786038571","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-136900-model-53-mechanical-water-feeder","provider":"National Boiler Supply","version":"1.0","type":"link"}