Description
The Weil McLain 383-900-080 is an OEM pressure switch designed for use with compatible Weil McLain boilers, providing reliable safety control at a set point of 3.25″ water column (wc). Pressure switches are a critical component in boiler systems, monitoring combustion air pressure to verify proper draft inducer or blower operation before allowing the burner to fire — helping prevent unsafe operating conditions and protecting system integrity.
Key Features
- OEM Weil McLain replacement pressure switch
- Set point: 3.25″ water column (wc)
- Monitors combustion air or flue pressure for safe boiler operation
- Designed for direct OEM replacement — no modifications required
- Helps prevent burner ignition under unsafe draft conditions
- Supports reliable, code-compliant boiler system performance
Application
This pressure switch is engineered as a factory-specified replacement part for select Weil McLain boiler models. It works in conjunction with the draft inducer assembly to confirm adequate combustion airflow before the control board permits ignition. Using the correct OEM part ensures proper calibration and system compatibility.
Why Choose OEM?
Using genuine Weil McLain replacement parts maintains the original performance specifications of your boiler, supports warranty compliance, and reduces the risk of nuisance lockouts or unsafe operation caused by improperly calibrated aftermarket components.
Product Specifications
- Brand: Weil McLain
- Part Number: 383-900-080
- Type: Pressure Switch
- Set Point: 3.25″ wc
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