Summary
●LQ valve actuators are the new generation of our company and can be used for driving and controlling the butterfly valves,ball valves and plug valves (part-turn valves with 90° movement).With the functions of local control and remote control both.
●They are widely used in the fields such as oil,chemistry,power generation,water treatment,paper making.etc
●The enclosure protection is IP67,and the explosion proof class is d II CT6(LQ1,LQ2) and d II BT6(LQ3,LQ4,LQ4JS)
Characteristics
●Housing:Hard anodized Aluminum casting and external epoxy power coated against severe industrial environment.
●Gearing:Precisely machined double worm gear C/W minimum black-lashjow noise,high output torque.
●Self-locking:Provided double worm gearing to keep position of valve unchanged against reverse torque from valve.
●Motor:Specially designed and induction motor to generate high starting torque and high efficiency equipped with thermal protector to prevent damage from over heating.Insulation class F.
●External mechanical stopper:Prevents over run of travel angle when limit switch fails.
●Torque switches:Protect actuator from damage caused by overload from the driven valve over the whole travel, 1 each for open/close.
●Limit switches:Directly engaged with driving shaft to set accurate position of valve,supplying a dry contact signal.
●Terminal:Spring loaded push type terminal for tight wiring connection under severe vibration.
●Space heater:Anti-condensation.
●Manual override:Auto/Manual switchable lever and handwheel engagement for emergency manual operation.Drive force automatically resorted by motor start, unless lever padlocked to prevent this occurring.
●Handwheel:Manual operated .turn on-off valve directly when power off.
Electrical characteristics
●Automatic identify Phase sequence, phase failure protection.
●DC24V Voltage Class for remote control.
●Convenient and flexible wiring method.
●Selector with impenetrable design to improve the sealing of actuator.
●Working situation indicated by five dry contact signals to convenient monitor the DCS system.
●Monitoring relay supply comprehensive fault signal for DCS system.
●Selector padlocked according to requirements to prevent the failure operation.
Item

选型表
Item |
Output torque |
Action time (0-90℃)
|
Power supply |
Metal seal butterfly valve |
Soft seal butterfly valve |
Ball valve |
Aeration butterfly valve |
LQ0-05 | 50 | 21 | DC24V, AC110V, AC220V, AC380V, AC440V | / | ≤DN80 | ≤DN32 | ≤DN80 |
LQ1-06 | 60 | 26 | / | ≤DN80 | ≤DN32 | ≤DN80 |
LQ1-10 | 100 | 26 | DN40-DN65 | DN100-DN125 | DN40-DN50 | DN100-DN200 |
LQ2-20 | 200 | 28 | DN80-DN125 | DN150-DN200 | DN65-DN80 | DN250-DN300 |
LQ3-35 | 350 | 32 | DN125 | DN200 | DN80 | DN350 |
LQ3-50 | 500 | 32 | DN150-DN200 | DN250 | DN100-DN125 | DN350-DN500 |
LQ4-80 | 800 | 36 | DN250 | DN300 | DN150 | DN500-DN600 |
LQ4-110 | 1100 | 36 | DN250 | DN350 | DN150 | DN600-DN800 |
LQ4JS-200 | 2000 | 110 | DN300-DN400 | DN400-DN500 | DN200-DN250 | DN800-DN1000 |
LQ4JS-250 | 2500 | 110 | DN450 | DN500-DN600 | DN250 | DN1000-DN1200 |
LQ4JS-400 | 4000 | 180 | DN600 | DN700 | DN300 | DN1200 |
LQ4JS-600 | 6000 | 180 | DN600 | DN800-DN900 | DN350-DN400 | DN1500-DN1800 |
Ordering information
The following details need to be supplied by user when ordering.
●Torque required(N.m),rotate speed (r/min)
●Application environment
●Power supply
●Mounting base with valve
●Electrical control required
●Other special requirements.