maintenance-free ball valve design

Is the ZR61K3E-TFD-930 a direct swap for the older ZR61K3-TFD-930

essential for driving large damper blades in industrial air handlers

and coupling components required for the specified valve sizes

it manages high-volume throughput for 1-50 PSI steam applications and 1-150 PSI hot water service

Siemens Building Technology GVD321.1U Actuator 328140-751 maintenance-free ball valve designThe Siemens Building Technology GVD321. 1U Actuator is a high torque, electronic solution purpose built for 2 position control in UL listed fire and smoke damper applications. Engineered for the rigors of life safety systems, this 230V spring return actuator delivers a robust 200 lb in of torque, ensuring positive closure and opening of high resistance dampers in commercial HVAC environments. Operating with a 30 second nominal drive time and a 15