Gate Valve Gearbox cast steel Multi-stage partial-turn gear operator
SJ series multi-stage partial-turn gear operators
SJ series multi-stage partial-turn gear operators are widely used in water plants, chemical plants, and power plants and for general industrial applications. SJ multi-stage models have a speed ratio varying from 320:1 to 1728:1 and torque ranging from 7000NM to 72000NM.
Instructions for Installation and Operation
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.
Product Features
- WCB casing
- Welded hand-wheel (200 or above)
- IP67 grade protection
- Nickel-plated input shaft, with more resistance to corrosion
- Ductile iron worm gear
- NBR sealing materials
- Suitable for -20℃ ~ 120℃ working conditions
Customization
- LCB casing
- IP68 grade protection
- Cast hand-wheel (150~450)
- Aluminum-bronze worm gear
- Stainless steel input shaft
- For high temperature up to 320℃
- For low temperature down to -40℃
- Designed with a lock mechanism
Main Components List
| Part name | Material |
| Hand wheel | HT250/ GB9439-88 |
| Worm shaft | 45GB/T699-1999 |
| Housing | HT250/ GB9439-88 |
| Baffle ring | JDB-3 |
| Worm | 45GB/T699-1999 |
| Worm gear | QT500-7/GB1348-88 |
| Cover | HT250/GB9439-88 |
| Indieator | Q235A GB/T700-2006 |
Main Technical Parameter
| Model | Gear ratio | Rating input(Nm) | Rating output(Nm) | Efficiency(%) | Hand-wheel |
| SJ320 | 320:1 | 90 | 7000 | 25 | 400 |
| SJ330 | 330:1 | 150 | 12000 | 24 | 800 |
| SJ410 | 410:1 | 160 | 17000 | 26 | 700 |
| SJ520 | 520:1 | 165 | 23000 | 26 | 700 |
| SJ560 | 1220:1 | 140 | 43000 | 25 | 800 |
| SJ600 | 1422:1 | 160 | 60000 | 26 | 800 |
| SJ720 | 1728:1 | 160 | 72000 | 26 | 800 |
SJ Series Valve Gearboxes,Multi-stage
This partial-turn valve gearbox series with cast iron housing is widely used in and for fire protection, water and electric utilities, chemical plants and general industrial-purposes.
- Varying from 320:1 to 1728:1 in terms of gear ratio and from 7000NM to 72000NM in terms of torque.
- Have IP65, IP67, and IP68 protection levels for option.
- WCBLCB for option.
Major Client:CIRCOR
Product Tags:
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Chemical Plants Multi Stage Gear Operator Partial - Turn Torque Rang 7000NM To 72000NM Images
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