Connect the bottom flange of the gear operator to the upper flange of the valve and slide the valve shaft into the hole on the worm gear. Tighten the flange bolt. The valve can be closed by turning the hand-wheel clockwise and opened by turning the hand-wheel counterclockwise. On the upper face of the gear operator, a position indicator and a position marking are mounted, through which the position of switch can be directly observed. The gear operator is also equipped with a mechanical limit screw, which can be adjusted and function to limit the position at the switch extreme position.
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Limit switches
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High temperature to +200 °C
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IP68 grade protection
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Aluminum-bronze worm gear
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Low temperature to -46 °C
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Interlock safety system
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Oxygen and food grade grease applications
Main Components List
| Part name |
Material |
Options |
| Hand wheel |
Welded hand-wheel |
- |
| Gearbox Housing |
Cast Iron |
Ductile iron |
| Cover |
Cast Iron |
Ductile iron |
| Input shaft |
Protected Steel |
- |
| Worm |
Carbon Steel |
- |
| Worm gear/ Quadrant |
Ductile Iron |
- |
| Position indicator |
Cast Iron |
Ductile iron |
Main Technical Parameter
| Model |
Ratio |
Rating input(Nm) |
Rating output(Nm) |
Efficiency(%) |
Mechanical advantage |
| S007 |
42:1 |
80 |
720 |
21% |
9.0 |
| S008 |
50:1 |
110 |
1200 |
22% |
10.9 |
| S108 |
72:1 |
130 |
2000 |
21% |
15.4 |
| S158 |
70:1 |
150 |
2500 |
24% |
16.7 |
| S208 |
68:1 |
210 |
3300 |
23% |
15.7 |
| S218 |
78:1 |
206 |
4475 |
28% |
21.7 |
| S238 |
175:1 |
170 |
6250 |
21% |
36.8 |
| S308 |
275:1 |
150 |
9800 |
24% |
65.3 |
| S358 |
532:1 |
170 |
18000 |
20% |
105.9 |
| S408 |
700:1 |
190 |
32000 |
24% |
168.4 |
| S448 |
1233:1 |
165 |
42000 |
21% |
254.5 |
| S508 |
1254:1 |
190 |
60000 |
25% |
315.8 |
| S608 |
1855:1 |
190 |
80000 |
23% |
421.1 |
| S708 |
2292:1 |
190 |
100000 |
23% |
526.3 |
| S808 |
3525:1 |
190 |
150000 |
22% |
789.5 |
Additional Features
✓
Cast iron housing (ductile iron optional)
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Protected steel input shaft (stainless steel optional)
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15 models up to 150000 Nm output
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Rugged construction
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Ductile iron worm gear
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NBR sealing materials
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Suitable for -20℃ ~ 120℃ working conditions
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Stroke: 0 - 90° (± 5° adjustable)
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Designed with a lock mechanism
Frequently Asked Questions
Q
How do you install and operate the gear operator with a valve?
To connect them, align the bottom flange of the gear operator with the upper flange of the valve and slide the valve shaft into the hole on the worm gear, then tighten the flange bolt. The valve is closed by turning the hand-wheel clockwise and opened by turning it counterclockwise.
Q
How can operators monitor the position of the switch?
The gear operator features a position indicator and a position marking mounted on the upper face, which allows for direct visual observation of the switch position.
Q
What are the extreme temperature capabilities of these gear operators?
These gear operators are highly versatile, capable of handling extreme temperatures ranging from low temperatures down to -46 °C up to high temperatures reaching +200 °C, depending on the configuration.
Q
What options are available for the housing and input shaft materials?
The standard construction features a cast iron housing and a protected steel input shaft. Optional upgrades include a ductile iron housing and a stainless steel input shaft to meet specific application requirements.
Q
How many models are offered and what is the maximum rating output?
There are 15 models available (ranging from S007 to S808) that offer various mechanical advantages and ratios, supporting a maximum output torque capability of up to 150,000 Nm.
Q
Does the gear operator support travel limit adjustments?
Yes, it features a mechanical limit screw that can be adjusted to restrict travel within a 0 - 90° stroke (with ± 5° adjustability) to limit the position at extreme switch locations.
