Siemens Building Technology GMA121.1U Actuator 340793-762 The Johnson Controls V-3974-6009 Spring

The Johnson Controls V-3974-6009 Spring Kit is a direct-replacement service component engineered to maintain the calibrated performance of pneumatic valve actuators

For quick field connections

significantly improving readability from a distance

Resistance should be checked across terminals to verify sensor integrity

The Watts 0125361 Repair Kit (also identified as LF26A-RK or 0864939) is the field-ready solution for maintaining Watts Series 26A and 263A small pressure regulators

Siemens Building Technology GMA121.1U Actuator 340793-762 The Johnson Controls V-3974-6009 SpringThe Siemens GMA121. 1U is a heavy duty spring return damper actuator engineered for high demand HVACR applications requiring reliable fail safe operation. Operating on 24VAC DC, this direct coupled actuator delivers a robust 62 lb in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers in both constant and variable air volume systems. Built with a rugged, die cast aluminum NEMA 1 housing, this unit ensures