Valworx 581850 electric actuator uses power-to-open and power-to-close, stays in last known position with loss of power. On receipt of a continuous voltage signal, the motor runs and via a rugged all metal gear drive rotates the output drive 90°. The motor is automatically stopped by internal cams striking limit switches. On receipt of a reversing continuous signal, the motor turns in the opposite direction reversing the output drive position.
These electric actuators are typically used where flammable gases may be present. Automate quarter turn ball valves, butterfly valves or dampers. Valve mounting using standard ISO5211 multi-flange mounting and double square drive. Unique integral motor/housing design provides higher torque in a very small package.
Actuators are tested to rigorous UL and CSA standards and certified by CSA per above. Two auxiliary dry contact limit switches are provided to confirm open and closed valve position. Thermostatically controlled anti-condensation heater will help protect actuator against damage from condensation.
Wiring connection is via two 1/2" NPT threaded ports using Exp rated connectors or pipe (not included).
|Type||Explosion Proof On-Off|
|Working Rotation||90° (quarter turn)|
|Max Torque||442 in lbs (50Nm)|
|Voltage||110 VAC 50/60 Hz|
|Current Rating||0.27A (full load amps)|
|Cycle Time||20 seconds per 90° rotation (no load)|
|Enclosure||Aluminum alloy, polyester painted, SS fasteners|
|Enclosure Protection||Type 4X (IP67) weatherproof|
|Manual Override||5mm hex drive with protective cover|
|Motor Protection||Thermal overload|
|Temperature Range||-13 to +131 °F (-25 to +55 °C)|
|Valve Position Confirmation||2 x SPST auxiliary limit switches 3A @ 125/250VAC, 30VDC resistive load|
|Anti-Condensation Heater||4 watts thermostatically controlled|
|ISO5211 Mounting||F03, F05, F07 (multi-flange)|
|Output Drive||14mm double square (female)|
|Electrical Connections||Two 1/2" NPT threaded ports. Requires Exp rated connector or pipe (not included).|
|Approvals||UL Class I Div I Groups C & D, Ex db IIC T5 Gb Class 1 Zone 1, AEx db IIC T5 Gb|
1/2" NPT Plug for 5818 Series Explosion Proof Actuators Stock #: 581891Price: $16.40
Buy 3 or more for $14.76 each
5818 Series On/Off Explosion Proof Actuators - Installation Instructions
5818 Series Explosion Proof Certificate of Compliance
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