Explosion-proof spring return electric actuators are designed to ensure the positioning of valves and dampers in the event of loss of power. In addition to the standard functions (floating, two-position, and modulating control), they utilize a mechanical spring assembly that positions the controlled device in the fully OPEN or CLOSED position without the need for an external power source. For two-position type actuators, a mechanical BUFFER reduces the dynamic effects of the spring return system.

Our explosion-proof electric actuators offer the option of manual control without a clutch or lever, allowing manual positioning at any time.

The SE Series of explosion-proof electric actuators have a flame and combustible dust resistant construction, with II2GD Ex db IIB T4 Gb and Ex tb IIIC T130°C Db certifications. Rated for Zones 1 and 2 (gas groups IIA and IIB) and Zones 21 and 22 (combustible dust or explosive gas and dust mixture atmospheres). Suitable for temperatures from group T1 to T4.