{"product_id":"heil-quaker-icp-1175977","title":"Heil Quaker ICP 1175977 Main Orifice","description":"\u003cp\u003eThe \u003cstrong\u003eHeil Quaker ICP 1175977 #44 Main Orifice\u003c\/strong\u003e is the OEM \u003cstrong\u003enumber 44 drill-size main burner orifice\u003c\/strong\u003e for \u003cstrong\u003eICP, Heil and Tempstar gas-fired heating equipment\u003c\/strong\u003e — a threaded brass \u003cstrong\u003egas spud\u003c\/strong\u003e that does one small job exactly right. The \u003cstrong\u003eorifice\u003c\/strong\u003e is the calibrated opening that \u003cstrong\u003emeters gas into the burner\u003c\/strong\u003e from the \u003cstrong\u003egas manifold\u003c\/strong\u003e, and together with \u003cstrong\u003emanifold pressure\u003c\/strong\u003e it sets the \u003cstrong\u003eburner input\u003c\/strong\u003e and the \u003cstrong\u003eflame quality\u003c\/strong\u003e of the whole heat cycle. A \u003cstrong\u003e#44 drill size\u003c\/strong\u003e opening measures \u003cstrong\u003e0.0860 inch\u003c\/strong\u003e, so a little \u003cstrong\u003escale\u003c\/strong\u003e, \u003cstrong\u003ecorrosion\u003c\/strong\u003e or a careless \u003cstrong\u003ereaming\u003c\/strong\u003e is enough to change how much gas reaches the burner. This is the factory number, \u003cstrong\u003e1175977\u003c\/strong\u003e, so you keep the original \u003cstrong\u003eOEM sizing\u003c\/strong\u003e instead of guessing at an aftermarket equivalent.\u003c\/p\u003e\n\n\u003cp\u003eThe part is a \u003cstrong\u003efixed orifice\u003c\/strong\u003e (also called a \u003cstrong\u003espud\u003c\/strong\u003e) that \u003cstrong\u003ethreads into the manifold\u003c\/strong\u003e ahead of a \u003cstrong\u003emain burner\u003c\/strong\u003e. The photo shows a \u003cstrong\u003ebrass body\u003c\/strong\u003e with a \u003cstrong\u003emale pipe-thread end\u003c\/strong\u003e and a \u003cstrong\u003ehex section\u003c\/strong\u003e behind the threads for a \u003cstrong\u003esocket or wrench\u003c\/strong\u003e, with the \u003cstrong\u003emetering bore\u003c\/strong\u003e running through the center. Gas flow through any orifice rises with the \u003cstrong\u003esquare root of the pressure drop\u003c\/strong\u003e, and gases with different \u003cstrong\u003especific gravity\u003c\/strong\u003e need different orifice sizes — which is why \u003cstrong\u003enatural gas\u003c\/strong\u003e and \u003cstrong\u003epropane (LP)\u003c\/strong\u003e orifices are not interchangeable without the correct \u003cstrong\u003econversion kit\u003c\/strong\u003e. Always confirm the \u003cstrong\u003egas type\u003c\/strong\u003e and \u003cstrong\u003einput rating\u003c\/strong\u003e on the unit \u003cstrong\u003erating plate\u003c\/strong\u003e against the size stamped on the orifice you are replacing.\u003c\/p\u003e\n\n\u003cp\u003eWhen an orifice goes bad, the burner tells you. A partly blocked or damaged spud shows up as \u003cstrong\u003eyellow, lazy or lifting flames\u003c\/strong\u003e, \u003cstrong\u003esoot\u003c\/strong\u003e, \u003cstrong\u003edelayed ignition\u003c\/strong\u003e, \u003cstrong\u003erollout\u003c\/strong\u003e or a \u003cstrong\u003eflame sensor\u003c\/strong\u003e that drops out mid-cycle, while an \u003cstrong\u003eenlarged or drilled-out orifice\u003c\/strong\u003e over-fires the burner. Check \u003cstrong\u003emanifold pressure\u003c\/strong\u003e first, inspect the orifice with a light, and never ream or drill a spud to clean it — replace it with the correct size. Install it with full thread engagement, snug it up without over-torquing the \u003cstrong\u003emanifold threads\u003c\/strong\u003e, and \u003cstrong\u003eleak-test with approved solution\u003c\/strong\u003e before putting the unit back in service. On a manifold with several burners, match every position to the size on the rating plate. Related ICP numbers in the same run include the \u003cstrong\u003e1175976\u003c\/strong\u003e gas valve, the \u003cstrong\u003e1175974\u003c\/strong\u003e ignitor assembly and the \u003cstrong\u003e1175973\u003c\/strong\u003e flame sensor, and ICP also lists a multi-piece #44 kit under \u003cstrong\u003e1186372\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM #44 Sizing:\u003c\/strong\u003e The factory \u003cstrong\u003e1175977\u003c\/strong\u003e orifice holds the original \u003cstrong\u003e0.0860 inch\u003c\/strong\u003e bore, so burner input and flame pattern stay where the manufacturer set them.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBrass Spud Construction:\u003c\/strong\u003e A \u003cstrong\u003ebrass\u003c\/strong\u003e body with a \u003cstrong\u003emale pipe thread\u003c\/strong\u003e and \u003cstrong\u003ehex\u003c\/strong\u003e section installs and removes cleanly with standard tools.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAccurate Gas Metering:\u003c\/strong\u003e A true \u003cstrong\u003ecalibrated orifice\u003c\/strong\u003e restores steady \u003cstrong\u003eblue flame\u003c\/strong\u003e combustion that a blocked or reamed spud cannot deliver.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDirect Factory Replacement:\u003c\/strong\u003e Ordered by the ICP part number \u003cstrong\u003e1175977\u003c\/strong\u003e, so you are not matching a drill size by eye on a hot manifold.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWhat size is the 1175977?\u003c\/strong\u003e It is a \u003cstrong\u003e#44 drill size\u003c\/strong\u003e main orifice, which is \u003cstrong\u003e0.0860 inch\u003c\/strong\u003e in diameter.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIs it for natural gas or propane?\u003c\/strong\u003e The \u003cstrong\u003e#44\u003c\/strong\u003e is the drill size only. Confirm the \u003cstrong\u003egas type\u003c\/strong\u003e and \u003cstrong\u003einput rating\u003c\/strong\u003e on the \u003cstrong\u003erating plate\u003c\/strong\u003e and compare the size stamped on your old orifice; use the proper \u003cstrong\u003eLP or natural gas conversion kit\u003c\/strong\u003e if the fuel is being changed.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHow many do I need?\u003c\/strong\u003e A furnace uses \u003cstrong\u003eone orifice per burner\u003c\/strong\u003e, so count the burners on the \u003cstrong\u003emanifold\u003c\/strong\u003e and order that many, matching the size called for on the rating plate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDisclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.\u003c\/p\u003e","brand":"Heil Quaker ICP","offers":[{"title":"Default Title","offer_id":67790798520498,"sku":"1175977","price":14.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/1175977.jpg?v=1792789201","url":"https:\/\/www.gsistore.com\/en-ca\/products\/heil-quaker-icp-1175977","provider":"GSIstore","version":"1.0","type":"link"}