Electric Linear Valve Actuators / L Series
L-250
- L250 linear electric actuatsor is designed to provide a thrust force 250 kg-f (2.45 kN) utilizing high-efficiency DC motor with low power consumption. Standardized with modulating control fits with globe valve and other linear drive valves, adjustable maximum stroke length 50 mm/ 2 inch. Equipped with external stem-area position indicator enables stem position read easily and instantly. Manual override allows for manual positioning of the valve and the handwheel is simply pushed in to engage the override system and disconnect electrical control of the actuator. Suitable for use in HVAC system or industrial facilities, especially boilers, heating systems at the high temperature environments.
| Item | L-250 |
|---|---|
| Thrust (kgf) | 250 |
| Thrust (lbf) | 550 |
| Thrust (kN) | 2.45 |
| Flange (ISO 5210) | F07 |
| Max. Stroke (mm) | 50 |
| Max. Stroke (inch) | 2 |
| Run Speed (mm/sec) | 0.6 |
| Run Speed (inch/sec) | 0.023 |
| Manual Override | Hand-Wheel |
| Weight (kg) | 10.5 |
| Weight (lb) | 23.5 |
Enclosure :
- IP67, NEMA 4X：Water-proof and dust-proof enclosure.
- Material：Dry powder coating aluminum alloy.
Position Indicator :
- All models are equipped with continuous mechanical position indicator. The external stem visual position indicator provides easily read and instantly available stem position.
Modulating Control :
- Actuator can be operated according to input signal and provide the output signal for feedback.
- Input signal：4-20mA, 1-5V or 2-10V.
- Output signal：4-20mA or 2-10V.
Adjustable Stroke :
- Allowing users to adjust actuator’s stroke to match valve stem’s stroke. (Refer to the specifications for stroke range)
Motor :
- All models are equipped with DC motor and provide low power consumption, high duty cycle and efficiency.(1500 starts per hour)
Working Conditions :
- Ambient temperature：-30℃ to +65℃ / -22℉ to +149℉
- Relative humidity：30％ to 95％
Slow-speed operation :
- In addition to the standard operating speed, if slower operating speed is needed, please contact with our sales person.
Conduit entry :
- standard : 1/2” NPT
- option : M20 or 3/4” NPT
Voltages :
- 24V AC/DC
- 110/220V AC
- CE
- CSA
Anti-condensation heater
A space heater can increase the internal temperature and keep dry inside actuator to avoid the freezing lubricant and moisture causing actuator failure under low temperature or high humidity. Heater is not recommended if the ambient temperature is above 35℃/ 95℉. However, when the temperature varies much from day to night or between summer and winter, heater and thermostat (25±5℃ / 77±41℉) are recommended.
Heater thermostat
The option can switch the heater off when the temperature inside the actuator is over 25°C / 77°F.
Floating controller
The option can provide 4-20mA output signal for position indicator and etc. It can be ordered with ON-OFF actuators.
The picture is based on AC 110/220V
Potentiometer
The option can be ordered with On/Off actuators. The selection has 1k or 5k ohm resistance values. It provides feedback signal for position indicator.
Communication Protocols
Modbus (MODBUS and modulating control cannot service at the same time.)
