maintenance-free ball valve design

ensuring seamless integration into existing motor starter assemblies

30 mm sizing for accurate fuel-to-air ratios

this pressure switch is calibrated to detect vent obstructions

The valve utilizes a non-mechanical seat-to-disc alignment and includes tamper-resistant bonnet screws to maintain set specifications in the field

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