{"product_id":"mcdonnell-miller-135300-51-2-m-hd-head-mechanism-for-mechanical-water-feeder","title":"McDonnell \u0026 Miller 135300 51-2-M-HD Head Mechanism for Mechanical Water Feeder","description":"\u003cp\u003eThis reliable head mechanism is designed to restore optimal control to your mechanical water feeder system. The \u003cstrong\u003eMcDonnell \u0026amp; Miller 135300\u003c\/strong\u003e, also identified as the \u003cstrong\u003e51-2-M-HD\u003c\/strong\u003e, acts as a primary component for regulating water levels, ensuring your boiler operates within safe parameters. By replacing a worn or faulty head, you protect your system from low-water conditions and maintain consistent operational efficiency.\u003c\/p\u003e\u003cp\u003eThe mechanism functions by utilizing a float-operated valve system that detects changes in water levels and triggers the necessary feed response. Built for longevity and consistent performance in demanding hydronic environments, this unit integrates seamlessly with existing setups to provide dependable automation and pressure management.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Regulation:\u003c\/strong\u003e Maintains accurate water levels to prevent dry-fire boiler damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Engineered with premium components to withstand high-temperature hydronic cycling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Integration:\u003c\/strong\u003e Designed for straightforward installation into compatible water feeder housings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Primarily utilized for commercial and residential boiler water feeders, mechanical level control assemblies, and low-pressure steam heating systems where consistent water makeup is critical.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125817409630,"sku":"135300","price":1414.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/135300_image_71d9ef8c-1c71-4b57-ba6f-46d177be8573.png?v=1786038513","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-135300-51-2-m-hd-head-mechanism-for-mechanical-water-feeder","provider":"National Boiler Supply","version":"1.0","type":"link"}