{"product_id":"mcdonnell-miller-132900-47-2-m-mechanical-water-feeder-with-2-switch","title":"McDonnell \u0026 Miller 132900 47-2-M Mechanical Water Feeder with #2 Switch","description":"\u003cp\u003eMaintain consistent boiler water levels automatically with the reliable McDonnell \u0026amp; Miller 47-2-M mechanical water feeder, identified by part number \u003cstrong\u003e132900\u003c\/strong\u003e. This unit provides essential level control for low-pressure steam boilers, helping to prevent dry-firing and potential system damage by ensuring proper water replenishment based on internal float position.\u003c\/p\u003e\u003cp\u003eThe unit functions through a high-precision float-operated valve mechanism that triggers water flow whenever the boiler water level drops below the pre-set threshold. Integrated with the #2 switch, it provides a dual-function capability, offering both mechanical makeup water feed and low-water cut-off control to safeguard your hydronic assets from overheating.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Control:\u003c\/strong\u003e Automatically restores water levels to maintain safe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Functionality:\u003c\/strong\u003e Integrated #2 switch for reliable low-water cutoff signaling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Engineered for durability in demanding steam boiler environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance Friendly:\u003c\/strong\u003e Simplifies routine boiler management and system longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Designed specifically for low-pressure steam boilers in commercial and residential heating systems requiring automated makeup water regulation.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43125813379166,"sku":"132900","price":1369.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/132900_image_96e1940d-9071-4690-85d2-968ea72dea90.png?v=1786038009","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-132900-47-2-m-mechanical-water-feeder-with-2-switch","provider":"National Boiler Supply","version":"1.0","type":"link"}