Bluetrend (Shanghai) Industrial Equipment Co., Ltd.
We are good quality supplier of Electric actuators Motorized Butterfly Valve from China.
|Place of Origin:||China|
|Minimum Order Quantity:||Negotiation|
|Packaging Details:||standard sea worthy packing|
|Delivery Time:||7-14 working days|
|Supply Ability:||100 sets per week|
|Name:||Electric Actuator||Protection Level:||IP67(optional:IP68)|
|Power Supply:||220Vac, 50/60 Hz；120Vac, 50/60 Hz||Control Style:||Modulatig|
|ON/OFF Model:||AK-M1......M12||Valve Sizes:||DN50,DN600(Wafer Type)|
motorised control valve actuator,
quarter turn electric actuator
Angular travel actuator Control style Modulating, Torque 50Nm,100Nm,200Nm,400Nm,500Nm,650Nm,1000Nm
There are four common types of actuators: manual, pneumatic, hydraulic, and electric.
A manual actuator employs levers, gears, or wheels to move the valve stem. Manual actuators are powered by hand. Manual actuators are inexpensive, typically self-contained and easy to operate. However, some large valves are impossible to operate manually and some valves may be located in remote, toxic or hostile environments that prevent manual operations. As a safety feature, certain types of situations may require quicker operation than manual actuators can provide to close the valve..
Air (or other gas) pressure is the power source for pneumatic valve actuators. They are used on linear or quarter-turn valves. Air pressure acts on a piston or bellows diaphragm creating linear force on a valve stem. Alternatively, a quarter-turn vane-type actuator produces torque to provide rotary motion to operate a quarter-turn valve. A pneumatic actuator may be arranged to be spring-closed or spring-opened, with air pressure overcoming the spring to provide movement. A "double acting" actuator use air applied to different inlets to move the valve in the opening or closing direction. A central compressed air system can provide the clean, dry, compressed air needed for pneumatic actuators. In some types, for example, regulators for compressed gas, the supply pressure is provided from the process gas stream and waste gas either vented to air or dumped into lower-pressure process piping.
Hydraulic actuators convert fluid pressure into motion. Similar to pneumatic actuators, they are used on linear or quarter-turn valves. Fluid pressure acting on a piston provides linear thrust for gate or globe valves. A quarter-turn actuator produces torque to provide rotary motion to operate a quarter-turn valve. Most types of hydraulic actuators can be supplied with fail-safe features to close or open a valve under emergency circumstances. Hydraulic pressure can be supplied by a self-contained hydraulic pressure pump. In some applications, such as water pumping stations, the process fluid can provide hydraulic pressure, although the actuators must use materials compatible with the fluid.
The electric actuator uses an electric motor to provide torque to operate a valve. They are quiet, non-toxic and energy efficient. However, electricity must be available, which is not always the case, they can also operate on batteries.
Spring-based actuators hold back a spring. Once any anomaly is detected, or power is lost, the spring is released, operating the valve. They can only operate once, without resetting, and so are used for one-use purposes such as emergencies. They have the advantage that they do not require a powerful electric supply to move the valve, so they can operate from restricted battery power, or automatically when all power has been lost.
The VA16 series butterfly valves can be used for refrigeration and heating systems, as well as for industrial and water treatment systems.
The VA16 series is equipped with standard On-Off or modulating (4~20mA, 1~5V, or 0(2)~10V ) control quarter-turn electric actuator.
• Wide size range (DN 50…DN600)
• For On-Off or Modulating Control
• The handwheel assembly manual adjustment
• Irreversible worm gear.
• Visual mechanical position indicator for accurate visual reference of valve position.
• Anti-condensation heater and 2 aux. limit switches on standard model
• Enclosure IP67
|Sizes||DN50…DN600 (Wafer Type)||Power Supply||220Vac, 50/60 Hz|
|Nominal pressure||PN16||Control style||On-Off or modulating|
|Tightness||Bubble tight||Travel Angle||90° ± 5 °|
|Medium Temperature||-20℃ ~ +1 2 0℃maximum||Input (Modulating)||4~20mA, 1~5V, 2~10V|
|Body Material||GG25 (for DN50…DN150)||Output (Modulating)||4~20mA, 2~10V|
|GGG40 (for DN200…DN600)||Enclosure||IP67 Waterproof|
|Stem Material||SS416||Ambient Temperature||-10℃ to +90℃|
|Disc Material||Epoxy coated ductile iron GGG40||Indicator||Continuous Position Indicator|
|Liner Material||EPDM||Manual Override||Non clutch design|
|Medium Type||Chilled and Hot water||Worm Gear||Permanently lubricated and|
|Space Heater||15W 220V Anti-condensation|
|Overheating protection||Power off at 120℃|
Contact Person: Ms. karen