Siemens Building Technology GMA121.1U Actuator 319852-301 a specialized LP regulator spring

a specialized LP regulator spring

ensuring correct orifice alignment for optimal venturi performance and system longevity

The "HH" core designation indicates an activated charcoal blend specifically formulated for burnout clean-up

Normally Open Security: Designed to remain open when de-energized

The OEM York 026-21055-000 provides a robust moisture barrier

Siemens Building Technology GMA121.1U Actuator 319852-301 a specialized LP regulator 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