IWN - Quarter-Turn

Rotork Gears Series IWN quarter-turn gearboxes.

A range of nuclear safety related heavy-duty cast and ductile iron, quarter-turn worm gearboxes. Suited for plug, ball and butterfly valves.

The IWN gearbox range comprises:

  • 7 sizes
  • Ratios of 40:1 to 70:1
  • Torque range up to 48,809 Nm (36,000 lbsft)

See IWN Literature Page for further details.

IWN Nuclear Quarter-Turn Gearbox