{"product_id":"bypass-cartridge-kit","title":"Hayward H-Series Low NOx Bypass Cartridge Kit","description":"\u003cp\u003eThe Hayward FDXLBPK1930 is the bypass cartridge kit for the Universal H-Series Low NOx pool heaters, covering the H150FD, H200FD, H250FD, H300FD, H350FD and H400FD.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat the bypass does\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNot all of the water reaching the heater is meant to pass through the heat exchanger. The bypass splits the flow so the exchanger sees the rate it was designed around, whatever the pump is doing. Get that wrong and the heater either runs too hot through the exchanger or never reaches temperature at all.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrdering it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHayward supplies this as a kit rather than a bare cartridge. Bypass parts are specific to the heater family, so confirm the model on the data plate matches the Universal H-Series Low NOx range before ordering.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48634425213140,"sku":"HAY-151-0019","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_1af608c4-2a6a-4550-8d5c-86e4e17f4db8.jpg?v=1788830405","url":"https:\/\/www.activepoolsupply.com\/products\/bypass-cartridge-kit","provider":"Active Pool Supply","version":"1.0","type":"link"}