Using it on the suction side depends on local codes and system design

This unit features a standard 2

Industrial Durability: Built to withstand the thermal cycling and vibration typical of HVACR mechanical rooms

though technicians should always inspect the interface gaskets for wear and replace them if they show signs of compression set or degradation to maintain an airtight seal

Siemens Building Technology 331-2963 Actuator 318518-761 Using it on the suctionThe Siemens 331 2963 is a rugged, No. 4 pneumatic damper actuator designed for reliable control in high demand HVAC and fire smoke systems. Built with a durable metal fabricated body, this piston type actuator features a 4 inch stroke and a nominal spring range of 8 to 13 psi, making it ideal for the gradual or positive actuation of dampers in ventilating systems and mixing boxes. This specific model is configured for a front mount installation using