Description
The Weil McLain 511-624-451 is an OEM replacement pressure switch engineered for precise, reliable performance in Weil McLain boiler applications. Designed with a 1.25″ water column (“wc) set point, this switch monitors combustion air or venting pressure to ensure safe boiler operation. Its single-pole, single-throw (SPST) switching action provides a clean open or closed circuit response, making it a dependable safety control component in your hydronic heating system.
Key Features
- 1.25″ water column (“wc) pressure set point for accurate sensing
- SPST (Single-Pole, Single-Throw) switching configuration
- Dual 1/4″ barb connections for straightforward tubing attachment
- OEM Weil McLain replacement part — direct fit for compatible boiler models
- Monitors combustion air or flue venting pressure to protect boiler operation
- Compact design for easy installation in tight boiler compartments
Specifications
- SKU: 511-624-451
- Brand: Weil McLain
- Pressure Set Point: 1.25″ w.c.
- Switch Type: SPST
- Connection Type: Dual 1/4″ barb
Application
This pressure switch is a critical safety component in Weil McLain boiler systems. It verifies that proper draft or combustion air pressure is present before allowing the burner to fire, helping to prevent unsafe operating conditions. Using a genuine OEM replacement ensures compatibility and maintains the integrity of your boiler’s safety controls.
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