{"product_id":"grundfos-579801-cast-iron-4-bolt-pump-flange-set-4-threaded-pair","title":"Grundfos 579801 Cast Iron 4-Bolt Pump Flange Set, 4\" Threaded (Pair)","description":"\u003cp\u003eThe Grundfos 579801 is a pair of cast iron 4-bolt pump flanges with 4\" threaded connections, used to connect a large flanged circulator to threaded pipe.\u003c\/p\u003e\u003cp\u003eEach flange threads onto the pipe and bolts to the pump's 4-bolt flange, so the pump can be removed for service without cutting the piping. Cast iron flanges are normally used on closed-loop hydronic heating and cooling systems.\u003c\/p\u003e\u003cp\u003eBefore ordering: confirm that your pump has a 4-bolt flange pattern that matches this 4\" set and that your pipe is 4\" threaded. Check the pump documentation for the correct gaskets and bolts.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Grundfos\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 579801\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Pump flange set (pair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Pattern:\u003c\/strong\u003e 4-bolt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Pump Flanges \u0026amp; Accessories\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSee also: \u003ca href=\"\/collections\/pump-flanges-accessories\"\u003epump flanges \u0026amp; accessories\u003c\/a\u003e, \u003ca href=\"\/collections\/grundfos\"\u003eall Grundfos products\u003c\/a\u003e.\u003c\/p\u003e","brand":"Grundfos","offers":[{"title":"Default Title","offer_id":50517472706663,"sku":"GRUN-579801","price":453.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/2253\/3479\/files\/GRUNF-5396_3bd5014b-8db3-4dfe-bea5-4fc097dc1228.jpg?v=1792424828","url":"https:\/\/www.thehousesupplier.com\/products\/grundfos-579801-cast-iron-4-bolt-pump-flange-set-4-threaded-pair","provider":"The House Supplier","version":"1.0","type":"link"}