Description
Weil McLain 381-800-474 Vent Damper Assembly Overview
The Weil McLain 381-800-474 is a factory-specified 4″ Vent Damper Assembly engineered for use with Weil McLain CG-25 Series 3 cast iron gas boilers. Designed to close the flue automatically when the boiler is not firing, this vent damper assembly helps reduce standby heat loss, improve overall system efficiency, and lower fuel consumption — making it an essential component for maintaining peak boiler performance.
Key Features
- OEM replacement vent damper assembly from Weil McLain
- 4″ diameter — sized for direct compatibility with CG-25 Series 3 boiler venting
- Automatically closes the flue when the boiler is in standby, minimizing heat loss up the stack
- Helps improve boiler efficiency and reduce fuel costs
- Engineered for reliable, long-term performance in residential and light commercial hydronic heating applications
- Direct OEM fit eliminates guesswork and ensures proper installation
Compatibility
- Designed for Weil McLain CG-25 Series 3 cast iron gas boilers
- Consult Weil McLain installation documentation to confirm compatibility with your specific unit
Why Choose OEM Weil McLain Parts?
Using genuine Weil McLain replacement components ensures your boiler system operates as designed. OEM parts like the 381-800-474 Vent Damper Assembly are built to exact factory specifications, providing the fit, function, and reliability that aftermarket alternatives may not match. Trust Weil McLain quality to keep your hydronic heating system running safely and efficiently season after season.
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