Manual Override (MOR)
Resistant
Sealing
Operation
Long Life
Alis Valves is a leading Manual Override Gearbox Manufacturer & Supplier in India, offering heavy-duty manual override gearboxes designed for pneumatic and electric actuated valves. Our gearboxes allow safe manual operation during power failures or maintenance, ensuring reliable valve control in critical industrial applications.
Specifications
Compatible Valves
Ball Valve, Butterfly Valve, Plug Valve & Other Quarter Turn Valves
Shaft Material
SS304 / SS316
Mounting Standard
ISO 5211
Surface Coating
Epoxy Powder Coated
Housing Material
Carbon Steel / Ductile Iron / Aluminium Alloy
Gear Material
Alloy Steel
Operating Angle
90° Quarter Turn
Applications
Emergency Valve Operation & Maintenance
Product Images
Frequently Ask Questions
They are commonly used with Butterfly Valves, Ball Valves, Plug Valves, and other quarter-turn valves.
A Manual Override Gearbox is a mechanical device that allows valves to be operated manually when pneumatic or electric actuators are unavailable due to power or air supply failure.
It ensures continuous valve operation during emergencies, maintenance, or actuator failure, improving plant safety and reliability.