System Reliability: Engineered to resist environmental stress cracking

This two-position damper integrates seamlessly with most forced air zoning systems

provided the voltage rating matches or exceeds the original part

this unit is engineered for continuous pressure systems such as boiler feed lines

The inclusion of the mounting bracket simplifies field installation

Maxitrol M611B-3/4 Valve Freon System Reliability: Engineered to resistThe Maxitrol M611B 3 4 is a precision engineered 3 4" NPT Modulating Gas Valve specifically designed for direct fired burners operating under negative pressure conditions. Built to handle a maximum 1 2 PSI inlet pressure, this Selectra series valve features a unique counter spring mechanism that maintains a secure closed position even against the continuous downward pull of pull through air systems. This design ensures stable flame control in high