Weil McLain 560-528-989 Orifice

The Weil McLain 560-528-989 Burner Orifice is a precision-engineered OEM replacement part designed specifically for natural gas boiler manifold assemblies. As a veteran-grade HVAC orifice, it features a #46 drill size essential for maintaining the correct gas flow rate and BTU input across the burner rack. This 7/16" hex component is built with a 1/8" NPT thread, ensuring a secure, leak-free seat within the gas manifold of various Weil McLain CGi and CGa series boilers. Proper orifice sizing is critical for achieving optimal combustion efficiency and preventing hazardous carbon monoxide buildup or burner soot. When troubleshooting boiler burner issues or converting high-altitude units, technicians rely on this burner spud for its exacting tolerances. Replacing worn or clogged boiler orifices restores the gas manifold pressure to manufacturer specifications, ensuring reliable ignition and stable flame patterns across the entire heat exchanger.

• Precision Metering: The #46 drill size ensures the exact natural gas delivery required for compatible Weil McLain boiler models.
• Industrial Construction: Durable brass 7/16" hex body resists corrosion and simplifies installation using standard service tools.
• OEM Compatibility: Specifically engineered for Weil McLain 560-528-989 specifications, fitting 1/8" NPT manifold ports perfectly.
• Combustion Stability: Maintains consistent burner performance and prevents inefficient fuel-to-air ratios.

• What boilers use the 560-528-989 orifice? This part is widely used in Weil McLain CGi and CGa series residential gas boilers. Always verify your boiler's BTU rating and altitude requirements before installation.
• Can this be used for LP conversion? No, this is a natural gas orifice. Converting to propane requires a different drill size (typically a #56) to handle the higher energy density of LP gas.
• How do I check for a clogged orifice? Inspect the burner spud for debris or carbon buildup. If the #46 drill opening is obstructed, the burner may experience delayed ignition or uneven heating.

Disclaimer: 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.