The Honeywell MP909E1034 Actuator is a pneumatic powerhouse that allows you precise control of your HVAC system. This spring-return, medium-force actuator converts a signal of air pressure between 5 and 10 psi into a smooth 4-inch stroke. Low friction and reliable operation are guaranteed by its rolling diaphragm construction, even in harsh temperature conditions between -28°F and 160... https://www.partshnc.com/actuator-28-160f5-10-psi-2