{"product_id":"propane-gas-burner-orifice-kit-fd","title":"Hayward H-Series Liquid Propane Burner Orifice Kit","description":"\u003cp\u003eThe Hayward FDXLBOP1930 is the liquid propane burner orifice kit for the Universal H-Series Low NOx heater in the FD range. The orifices are the small metered jets that meter gas into each burner, and their size is what matches the heater to the fuel it is burning.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it fits\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eHayward lists this kit for the Universal H-Series Low NOx heaters H150FD, H200FD, H250FD, H300FD, H350FD and H400FD, and for the ASME pool and spa heater versions of the same range. Check the model plate on your heater against that list before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePropane, not natural gas\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePropane orifices are drilled smaller than natural gas orifices because propane carries more energy per unit of volume. Fitting the wrong set gives you either a starved flame or an overfired heater, so the gas type on the kit has to match the gas at the meter or the tank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho should install it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOrifice work sits inside the fuel train. Have a qualified gas technician fit the kit and verify manifold pressure and burner appearance afterward.\u003c\/p\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48634373701844,"sku":"HAY-151-0018","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_ae853b05-62d6-46dd-979e-fc228a2d13ac.png?v=1788828720","url":"https:\/\/www.activepoolsupply.com\/products\/propane-gas-burner-orifice-kit-fd","provider":"Active Pool Supply","version":"1.0","type":"link"}