Manual valve actuator butterfly valve cast iron gear operator gearbox nodular
SJ series partial-turn gear operators
SJ series partial-turn gear operators are widely used in water plants, chemical plants, and power plants and for general industrial applications. SJ single-stage models have a speed ratio varying from 24:1 to 80:1 and torque ranging from 170NM to 2500NM.
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
Gray iron 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
WCB, LCB, or ductile iron 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℃
For marine use
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 | SJ24 | SJ30 | SJ50 | SJ80 |
| Gear ratio | 24:1 | 30:1 | 50:1 | 80:1 |
| Maximum travel | 90° | 90° | 90° | 90° |
| Limit adjust | ±5° | ±5° | ±5° | ±5° |
| Rating input(Nm) | 30 | 48 | 90 | 95 | 95 |
| Rating output(Nm) | 170 | 270 | 700 | 1200 | 2000 |
| Efficiency | 23 | 26 | 25 | 26 |
SJ Series Valve Gearboxes,Single-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 24:1 to 80:1 in terms of gear ratio and from 170NM to 2500NM in terms of torque.
- Have IP65, IP67, and IP68 protection levels for option.
- HTQTcorrosion-resistant, for marine application, and 180° rotation (optional).
Major Clients: CRANE
Product Tags:
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Compact Worm Gear Single Stage Gear Operator Marine Use For Water Plants Images
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