{"product_id":"a-y-mcdonald-747h20-backup-sump-pump","title":"A.y. Mcdonald 747h20 Backup Sump Pump","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe A.Y. McDonald 747h20 is a water-powered backup sump pump designed to protect basements and crawl spaces from flooding when the primary sump pump fails or loses power. Operated entirely by municipal water pressure, it requires no electricity and no battery, making it a reliable secondary line of defense in residential drainage systems. A licensed plumber typically supplies and installs this unit. The Guardian model designation indicates A.Y. McDonald's backup sump pump product line engineered for dependable automatic activation during primary pump failure events.\u003c\/p\u003e\u003cp\u003eThe 747h20 is suited for residential applications where a dependable backup is needed during power outages, pump failures, or high-volume water intrusion events that overwhelm the primary pump. It is installed in the same sump pit as the primary pump and activates automatically when water rises to the preset float level. Because it uses city water supply pressure as its power source, it remains fully operational during extended electrical outages.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWater-powered operation requires no electricity or battery maintenance\u003c\/li\u003e\n\u003cli\u003eAutomatic activation via float switch when primary pump is overwhelmed or offline\u003c\/li\u003e\n\u003cli\u003eDesigned for installation alongside an existing primary sump pump in a standard sump pit\u003c\/li\u003e\n\u003cli\u003eNo power outage vulnerability — operates on municipal water pressure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and new-installation backup sump pump for residential sump pit systems with access to a municipal pressurized water supply line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the main water supply before making any connections to the supply line. A backflow preventer or check valve may be required by local code on the supply inlet. Verify that municipal water pressure meets the minimum operating requirements for the unit before commissioning.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Type\u003c\/strong\u003e: Water powered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Backup sump pump\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: A.Y. McDonald\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 747h20\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AY MCDONALD","offers":[{"title":"Default Title","offer_id":51233912127794,"sku":"747H20","price":756.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307628786.jpg?v=1780111979","url":"https:\/\/voomisupply.com\/products\/a-y-mcdonald-747h20-backup-sump-pump","provider":"Voomi Supply","version":"1.0","type":"link"}