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Its internal check valve and robust construction make it ideal for heat pump and cooling-only applications where reliable refrigerant flow control is critical
Engineered to eliminate false cycling and provide consistent pressure switch 1
This board is designed as a communication-capable expansion module
though it may have a slightly larger physical footprint
Siemens Building Technology 331-674 Extender Kit 321042-401 Its internal check valve andFor contractors servicing legacy systems, the Siemens 331 674 Motor Stem Extender Kit is an essential field assembly solution for extending the reach of pneumatic damper actuators. This kit is specifically designed for use with Siemens No. 4 pneumatic actuators, providing a necessary 12 inch (305 mm) extension to bridge the gap between the actuator stem and the damper linkage. The assembly features a high grade 5 16 inch diameter push rod coupled with