{"product_id":"patterson-kelley-26-4000-0125","title":"Patterson-Kelley 26-4000-0125 Flame Rod","description":"\u003cp\u003eThe \u003cstrong\u003ePatterson-Kelley 26-4000-0125 Flame Rod\u003c\/strong\u003e is a mission-critical \u003cstrong\u003eflame ionization sensor\u003c\/strong\u003e designed specifically for \u003cstrong\u003ehigh-efficiency commercial boilers\u003c\/strong\u003e. Engineered to withstand the intense thermal environment of the combustion chamber, this \u003cstrong\u003ereplacement flame rod\u003c\/strong\u003e ensures consistent \u003cstrong\u003eflame signal monitoring\u003c\/strong\u003e for the ignition control system. It functions by utilizing the conductivity of the flame to complete a DC circuit, providing the millivolt signal required to maintain the gas valve's open position. Precision-manufactured for the \u003cstrong\u003eP-K Mach\u003c\/strong\u003e and \u003cstrong\u003eP-K Compact\u003c\/strong\u003e boiler series, the 26-4000-0125 minimizes \u003cstrong\u003enuisance lockouts\u003c\/strong\u003e and \u003cstrong\u003eignition failure\u003c\/strong\u003e codes often caused by carbon buildup or high-resistance electrode fatigue. For technicians performing \u003cstrong\u003epreventative maintenance\u003c\/strong\u003e or diagnostic troubleshooting on \u003cstrong\u003ePatterson-Kelley hydronic systems\u003c\/strong\u003e, replacing a fouled or oxidized rod with this OEM-spec component is essential for optimizing burner performance and ensuring reliable \u003cstrong\u003eHVAC combustion safety\u003c\/strong\u003e during high-demand cycles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecise Signal Transmission:\u003c\/strong\u003e Provides stable microamp readings to prevent erratic burner behavior and safety shutdowns.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Durability:\u003c\/strong\u003e Constructed with specialized alloys to resist warping and oxidation under extreme thermal stress.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect OEM Fitment:\u003c\/strong\u003e Engineered specifically for Patterson-Kelley equipment, ensuring proper alignment with the pilot or main burner assembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced System Reliability:\u003c\/strong\u003e Reduces service calls by maintaining a clear electrical path for flame rectification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCommon Technical Questions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat causes this flame rod to fail prematurely?\u003c\/strong\u003e\u003cbr\u003e\nHeavy carbon fouling (sooting) or silica buildup on the electrode can insulate the rod, leading to a weak microamp signal. Regular inspection during annual maintenance is recommended to check for cracks in the ceramic insulator.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs this compatible with the entire P-K Mach boiler line?\u003c\/strong\u003e\u003cbr\u003e\nWhile this part is common across many \u003cstrong\u003ePatterson-Kelley Mach\u003c\/strong\u003e and \u003cstrong\u003eCompact\u003c\/strong\u003e models, technicians should always verify the specific boiler serial number and burner configuration to ensure correct probe length and mounting clearance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I clean the rod instead of replacing it?\u003c\/strong\u003e\u003cbr\u003e\nLight oxidation can sometimes be removed with a non-conductive abrasive pad, but if the metal is pitted or the ceramic is compromised, replacement is necessary to ensure consistent \u003cstrong\u003eflame sensing\u003c\/strong\u003e.\u003c\/p\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":"Patterson-Kelley","offers":[{"title":"Default Title","offer_id":43381699117234,"sku":"26-4000-0125","price":71.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1838\/2375\/files\/Pic_1120e759-4f90-4f07-a26e-8b2fdf7b65b1.png?v=1698706307","url":"https:\/\/www.gsistore.com\/en-ca\/products\/patterson-kelley-26-4000-0125","provider":"GSIstore","version":"1.0","type":"link"}