KLST-B is the standard on/off electric actuator structure for open-close rotary valve automation. Use it when you need simple fully open and fully closed control for ball valves, butterfly valves and ventilation valves. Catalog models KLST-02B, KLST-05B, KLST-10B, KLST-20B, KLST-40B and KLST-60B cover output torque from 6 N.m to 6000 N.m, action times of 7 s to 150 s for 0-90 degrees, and DC24V, AC24V, AC110V, AC220V or AC380V power options. Selection should follow the catalog principle that 60%-80% of rated actuator torque covers the valve working torque.
KLST-02-B-AC24V - KLST: normal electric actuator
- KLSTZ: explosion-proof type
- KLSTA: waterproof type
- Choose by valve torque, DN size and service conditions
- B: Standard on/off
- Confirm actual power supply and control cabinet design
Selection use
Review KLST-B Standard On-off Electric Actuator or related examples such as KLST-02B, KLST-05B, KLST-10B, KLST-20B, KLST-40B, KLST-60B.
Torque selection
The catalog warns that valve type, manufacturer and service environment affect actual torque. Use 60%-80% of actuator rated torque as the valve working-torque reference and confirm with Kailing before final selection.
RFQ confirmation points
For a quotation, provide valve type, DN size, working torque, voltage, open close control, environment, quantity. Include valve drawings or an existing actuator nameplate when replacing a unit.
| Parameter | Value |
|---|---|
| Actuator family | KLST normal electric actuator, KLSTZ explosion-proof type, KLSTA waterproof type |
| Size codes | 02, 05, 10, 20, 40, 60, 100, 200 and 400; selection table also lists KLST-600 |
| Voltage options | DC24V, AC24V, AC110V, AC220V and AC380V |
| Torque range in selection table | 6N.m to 6000N.m by model |
| Action time range in selection table | 7s to 150s for 0-90 degrees by model |
| Selection principle | Choose actuator rated output torque so 60%-80% of rated torque covers the valve working torque |
| Selection note | Product guide data is a selection reference; confirm actual valve torque, service environment, wiring and current drawing before final quotation |
| Structure | B: standard on/off |
| Best fit | Simple open-close control for ball valves, butterfly valves and ventilation valves |
KLST-B Standard On-off Electric Actuator sizing reference
| Model | Output torque | Action time 0-90 degrees | Power | Valve sizing reference |
|---|---|---|---|---|
| KLST-02 | 6N.m | 7s | AC110/AC220 50/60Hz or DC24V | hard-seal butterfly DN25; soft-seal butterfly up to DN20 |
| KLST-05 | 15/30/50N.m | 10/20/30s | AC110V, AC220V, AC380V, 50/60Hz, DC24V | soft-seal butterfly up to DN65; ball valve up to DN40; ventilation butterfly DN50-DN80 |
| KLST-10 | 50/60/100N.m | 13/15/20/30s | AC110V, AC220V, AC380V, 50/60Hz, DC24V | hard-seal butterfly DN40-DN65; soft-seal butterfly DN80-DN125; ball valve DN40-DN50 |
| KLST-20 | 80/100/150/200N.m | 9/15/20/30/60s | AC110V, AC220V, AC380V, 50/60Hz, DC24V | hard-seal butterfly DN80-DN125; soft-seal butterfly DN150-DN200; ball valve DN65-DN80 |
| KLST-40/60 | 150/250/400/600N.m | 9/15/20/30/60s | AC110V, AC220V, AC380V, 50/60Hz, DC24V | hard-seal butterfly DN150-DN200; soft-seal butterfly DN250; ball valve DN100-DN125 |
| KLST-100 | 800/1000N.m | 30/50s | Confirm by model | hard-seal butterfly DN250; soft-seal butterfly DN300-DN350; ball valve DN150-DN200 |
| KLST-200 | 2000N.m | 100s | Confirm by model | hard-seal butterfly DN300-DN400; soft-seal butterfly DN400-DN500; ball valve DN250-DN300 |
| KLST-400 | 4000N.m | 100s | Confirm by model | hard-seal butterfly DN400-DN500; soft-seal butterfly DN500-DN600; ball valve DN300-DN400 |
| KLST-600 | 6000N.m | 150s | Confirm by model | printed soft-seal butterfly range requires confirmation; ball valve DN400-DN500 |
DN ranges are catalog selection references only. Actual actuator selection must be based on valve working torque and service environment.
KLST-B Standard On-off Electric Actuator technical reference
| Structure | Examples | Reference | Product guide pages |
|---|---|---|---|
| Standard on/off | KLST-02B, KLST-05B, KLST-10B, KLST-20B, KLST-40B, KLST-60B | Ordering-code section lists B as the standard on/off structure, and page 95 provides torque, action-time, voltage and valve-size selection data. | 95, 96, 97, 98, 99, 100 |
Frequently Asked Questions
- FAQ Which source supports KLST-B Standard On-off Electric Actuator?
This product detail is based on Kailing catalog page 95, 96, 97, 98, 99, 100. - FAQ Can KLST be selected by DN size only?
No. DN ranges are references. Final selection should confirm working torque, valve type, medium, pressure, control signal and environment.
Need a quotation?
Send the model, medium, pressure, port size, body material and quantity for review.