Siemens 331-4513 Pneumatic Actuator, #3

The Siemens 331-4513 is a size #3 pneumatic valve actuator with a 5-10 psi spring range and a 2 3/8 in. fixed stroke, used to position a compatible valve in response to a pneumatic control signal. It mounts to the valve body to provide modulating or two-position control in HVAC systems. This genuine Siemens replacement part is sized for applications matching its spring range, stroke, and actuator size. Confirm the part number against your equipment's parts list before ordering.