Description
The Weil McLain 640-000-099 is a purpose-built pipe flow meter designed for use with the WMnt-155-Combi boiler system. Engineered to Weil McLain’s exacting standards, this flow meter provides accurate, real-time measurement of hydronic system flow rates, helping technicians and system operators verify proper water circulation and optimize boiler performance.
Key Features
- OEM Weil McLain replacement part — direct-fit for WMnt-155-Combi boiler systems
- Accurate pipe flow measurement ensures proper hydronic system balance
- Supports system diagnostics, commissioning, and ongoing performance monitoring
- Durable construction designed to withstand the demands of hydronic heating environments
- Genuine Weil McLain part for assured compatibility and reliability
Application
This flow meter is specifically matched to the Weil McLain WMnt-155-Combi boiler, making it the ideal choice for service technicians performing maintenance, system commissioning, or component replacement on this model. Using a genuine OEM part ensures the system continues to operate within manufacturer specifications.
Why Choose Genuine Weil McLain Parts?
- Guaranteed fit and function for WMnt-155-Combi systems
- Maintains manufacturer warranty compliance
- Consistent quality and performance you can trust
- Backed by Weil McLain’s legacy of hydronic heating expertise







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