Is the power head field-replaceable without removing the entire valve

this component acts as a primary safety interlock

Universal Coil Compatibility: Designed to work with the Emerson AMC coil family

High Efficiency: The 3/4 HP motor provides powerful circulation while maintaining electrical efficiency

Is this a universal pressure switch

Siemens Building Technology 331-3001 Damper Actuator 318820-201 Is the power head field-replaceableThe Siemens Building Technology 331 3001 Damper Actuator is a robust No. 4 pneumatic actuator engineered for precise modulation and reliable control of HVAC systems. This pneumatic damper actuator features an all metal body construction and a high quality, ozone resistant rolling diaphragm designed to provide consistent force over its 4 inch stroke. With a 3 13 psi nominal spring range, this unit is ideal for applications requiring a large effective