Designed for durability

This HVAC control linkage is essential for ensuring your pneumatic systems close against flow accurately

or circulator control

serving as the primary replacement for the HS780-17NL-304A as well as the 104A and 108A variants

When installing the Alco manual opener

Johnson Controls D-3153-2 Damper Actuator THPU32HP7Y Designed for durabilityThe Johnson Controls D 3153 2 Damper Actuator is a robust, 15 inch pneumatic piston positioning device engineered for high demand HVACR and life safety applications. This multipurpose pneumatic damper actuator features a high performance 8 13 psi spring range and a standard 3 inch stroke, delivering the reliable force required for smoke ventilating and proportional volume control. Built with a die cast aluminum body and a synthetic elastomer