L-250 electric linear valve actuators

L250 Electric Linear Valve Actuator
  • L250 Electric Linear Valve Actuator
Product Name : L-250 electric linear valve actuators
Description

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.

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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
ModelThrustWeightMotor Power
(Watt)		Mounting
Flange
(ISO 5210)		Max. Stroke
kgflbf
kglbmminch
L-250 250 550 10.5 23.5 15 F07 50 2
L-500 500 1100 10.5 23.5 15 F07 50 2
L-1000 1000 2205 31.5 70 25 F10 100 4
L-2000 2000 4410 31.5 70 35 F10 100 4
  • CE
  • CSA

proimages/product/L/L200-500EN.jpg

Space 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.

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Heater thermostat

The option can switch the heater off when the temperature inside the actuator is over 25°C / 77°F.

Floating controller

An external switch is applied to provide either two-position or floating control to the actuator.

Floating（L-250~L-500）
The picture is based on AC 110/220V.

Floating controller

An external switch is applied to provide either two-position or floating control to the actuator.

Floating（L-1000~L-2000）
The picture is based on AC 110/220V.

Potentiometer unit

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.)

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