Description
Weil McLain 540-131-088 LP Orifice Assembly Overview
The Weil McLain 540-131-088 is an OEM LP (liquid propane) burner orifice assembly designed specifically for use with the WM97+ and ECO 110 series high-efficiency condensing gas boilers. Engineered to Weil McLain’s exacting standards, this replacement orifice assembly ensures proper gas metering and combustion performance, helping maintain the efficiency and safety ratings your boiler was designed to deliver.
Key Features
- OEM replacement orifice assembly for Weil McLain WM97+ and ECO 110 boilers
- Configured for LP (liquid propane) gas fuel
- Precision-engineered orifice geometry for accurate fuel metering and stable flame
- Direct drop-in replacement — no modification required
- Supports proper combustion efficiency and safe boiler operation
- Manufactured to Weil McLain quality standards
Compatibility
- Weil McLain WM97+ Series Condensing Gas Boilers
- Weil McLain ECO 110 Series Condensing Gas Boilers
- Fuel Type: LP (Liquid Propane)
Why Use OEM Replacement Parts?
Using genuine Weil McLain replacement components like the 540-131-088 ensures your boiler continues to operate at peak efficiency. Aftermarket orifices may not meet the precise tolerances required for proper gas flow, potentially compromising combustion quality, efficiency ratings, and warranty compliance. Trust OEM parts for long-term reliability.







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