This specific pressure switch is rated for 0 to 1

Operation outside the specified 110-170°F window may lead to inconsistent modulation or premature component fatigue

and various Armstrong/Ducane models

Adjustable Blowdown: Dual control rings provide professional-grade adjustability for exact pressure relief and minimal simmer

Trane ACT0403 Actuator 340793-762 This specific pressure switch isThe Trane ACT0403 Actuator is a professional grade 24V spring return actuator engineered for precise control of dampers and valves in commercial and industrial HVACR systems. This normally open (N O) actuator is designed for high reliability applications where a fail safe position is required during power loss. Built with a rugged zinc plated steel housing, the ACT0403 withstands harsh mechanical environments, maintaining operational integrity at