MTW Mk2 - Multi-Turn Worm

MTW Gearbox

MTW Mk2 multi-turn worm gear operators have been designed to suit isolating duty valves, dampers and gates that require irreversibility.

The gearboxes include low lead angle gearing designed to be inherently self-locking. MTW Mk2 gearboxes feature a removable output sleeve to facilitate bore and keyway machining, and an indexable baseplate to allow on-centre or off-centre mounting to the valve flange without special machining.


  • Totally enclosed bronze gearing
  • Grease filled for life and fully sealed to IP67 as standard
  • Comprehensive gear ratios combined with a selection of auxiliary input spur gear reducers
  • Angular contact bearings supporting worm shaft
  • Removable and repositionable output sleeve
  • Repositionable baseplate
  • Inherently self-locking gear componentry

See MTW Mk2 Literature Page for further details.

MTW Gearbox