and Comfortmaker furnaces

Lead-Free Construction: Meets all NSF/ANSI 372 and 61 requirements for potable water safety and plumbing code compliance

provided they match the 10mm stroke and mounting requirements of the NPSM valve body

so ensure your controller is configured for a Type III 10K curve to avoid offset errors

blowing live steam

Siemens Building Technology 331-674 Extender Kit 321042-401 and Comfortmaker furnacesFor 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