Siemens Building Technology SFA71U/25G Actuator 324846-701 The 3-inch insert is specifically

The 3-inch insert is specifically sized to reach the manufacturer-defined "sweet spot" in the heat exchanger

this model is a "valve only" SKU

Key Benefits: Direct OEM Compatibility: Specifically engineered to replace legacy model numbers CTR1137 and X13060035660 without cabinet modifications

this normally open switch ensures your installs stay operational without unnecessary callbacks

facilitating a direct bolt-on installation for most industrial gas burners

Siemens Building Technology SFA71U/25G Actuator 324846-701 The 3-inch insert is specificallyThe Siemens SFA71U 25G Actuator is a professional grade 2 position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut off in high demand HVAC applications. This spring return valve actuator facilitates a mechanical fail safe in the event of power loss, making it a critical