The Bonomi EAX045-EAX230 Explosion-proof spring return fail-safe electric actuators for quarter turn valves are available in four different sizes, from 445 in/lbs. to 2035 in/lbs. When the power signal is lost, a mechanical spring set kicks in to position the controlled quarter turn valve to either the open or closed position. A mechanical buffer is also used at the end of the spring stroke to reduce the dynamic effects of the spring return system.

The EAX series also standardly features an extra heavy-duty housing, two extra limit switches, a heater and thermostat, ISO 5211 bolt patterns, double square female drive, a thermal overload switch, a manual override, visual indicator, and 1/2” conduit connections. A self locking gear train eliminates the need for a motor break.

EAX180 Available Options

• Standard On/Off
• 4~20mA Positioner
• Spring Return NO handle
• Spring Return handle
• Power Options: 24V AC/DC, 110V AC 220V AC

Specifications

The Bonomi EAX series explosion-proof rugged electric actuator is ideally suited for all hazardous conditions where an ignitable concentration of flammable gasses, liquids, combustible fibers or dust are likely to exist.
The EAX series is certified for these areas under Class I, Division 1, Class II, Division I under CSA. This series meets NEMA 4x, 7, 8 and 9.
The EAX series also standardly features an extra heavy-duty housing, two extra limit switches, a heater and thermostat, ISO 5211 bolt patterns, double square female drive, a thermal overload switch, a manual override, visual indicator, and 1/2” conduit connections. A self locking gear train eliminates the need for a motor break

Explosion Proof Actuator Features

• NEMA 4x, 7, 8 & 9 (CSA Approved)
• 2 limit switches for operation, fail clockwise spring and on/off control standard
• Enclosure conforms to IP68 with explosion-protected performance and 1/2” FNPT conduit connection
• Temperature range: -22°F to 158°F
• Clutch-less Manual Override
• Thermostatically controlled anti-condensation heater for working conditions
• Self-locking gear system.
• Available in both ON/OFF (-05*) or 4~20 mA MODULATING (-07*)
• Standard 50% Duty Cycle (in accordance with IEC standard)
• ISO 5211 Mounting Bolt Pattern and DIN 3337 Double Square Drive
• ± 5° Mechanical stop on 0° and 90°
• Continuous mechanical position indicator
• Built-in thermal overload protection prevents motor burnout

Summary EAX Spring Return Specification

Please refer to the image below for specification. Click on the image to expand