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Worm gear operators are designed to be used as 1/4-turn actuators.
For applications on ball, butterfly, plug valves and dampers
requiring a self-locking mechanism.
F20(250mm), BHC 205mm, max stem Ø65/ 20*12 mm
Housing: ASTM A216 WCB;Worm gear: Ductile Iron A536-65-45-12, Worm:
Adjustable Memory Stops in Open Position 45°- 90°
Chain Wheel Operators,Special Coatings
1.Small in volume, light in weight, reasonable design and strong in
output, labor saving and portable.
2.The device are equipped with limit screws which can be adjusted
within 5° at position in open and close.
3.Indicator board of open degree is directly installed on output
worm gear,so indication is accurate and audio-visual.
4.There are two keyways apart with 90° degree set on the inner hole
of worm gear for need.
5. The output flange accords with standard ISO5211 and can be
machined as customers' special requirements.
6.The dedicated grease has been loaded before leaving factory, the
shell is sealed up for waterproof.
Notes to users
All series of gear operator have round hole, square hole and other
special shaped hole for users' selection and can be machined as
customers' special requirements.
When installation, please turn the indicator board of this device
and the valve to be the CLOSE position in order to keep them
harmonized.Valve CLOSE when turn hand wheel clockwise and OPEN when
turn hand wheel counter clockwise as usually custom.
Do not operate the device at the exceed rating condition.
A periodic check, every year should be made to determine condition
of the lubricant.