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EL-O-Matic MO Manual Override Gear Box
EL-O-Matic MO Manual Override Gear Box
The EL-O-Matic MO-series declutchable manual override gearboxes offer simple and reliable manual positioning of valves and other quarter-turn devices.
It's declutchable design allows manual overriding existing quarter turn rotary actuators, typically in case of pneumatic or electric failure. The rugged, light weight construction is suitable for indoor and outdoor use.The self-locking worm gear design means safe and easy operation, positive manual positioning and extremely long life.
EL-O-Matic MO Manual Override Gear Box


Power Source
Product Type
Manual Operator
Control Type
Valve Type
Ball, butterfly, plug and any other quarter turn application
Operating Temperature
-20°C to +80°C (-4°F to +176°F)
Operating Pressure
up to 8.3 bar / 120 psi


  • Light weight aluminum design and suitable for indoor and outdoor use.
  • Easy operation.
  • Suitable for double acting or spring return quarter turn applications.
  • Available in 5 sizes ranging up to maximum output torque of 6000 Nm (53100
  • Standard equipped with stroke adjustment limit stops.
  • Dual ISO5211 mounting patterns on top and bottom flange.
  • Optional available with vent valves and/or valve adaptors.


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