Rotork has received major contracts to supply electric and pneumatic valve actuators and valve gearboxes to Hengli Petrochemical...
IW - Quarter-Turn Worm
The IW range of quadrant Worm gear valve operators is available in manual and motorised configurations and features a removable sleeve to facilitate bore and keyway machining. This sleeve can be rotated in steps to facilitate mounting to the valve.
IW size 3 to 13 torque range up to 264,000 Nm.
IW size 14 to 17 torque range from 250,000 Nm to 850,000 Nm.
- Worm shaft supported by angular contact bearing
- High efficiency and multiple ratios
- Removable drive sleeves up to IW11
- Stroke: 0 to 90º (+/- 5º adjustable)
IWD gearboxes have a unique flange designed to accept an actuator without a base fitted - IQ and AWT ranges, sizes 1 & 2 only.
See IW Literature Page for further details.