Explosion Proof Modulating Compact Electric Actuator 4-20mA 500NM IP67

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explosion-proof modulating small electric actuator 4-20mA 500NM IP67



Small electric actuator is used for controlling 0°360° rotation of the valves and other similar products, such as butterfly valve, ball valve, damper, flapper valve, cock valve etc. It widely applies to petroleum, chemical, water treatment, shipping, paper making, power plant, heating, light industry and other industries. Drived by 380V/220V/110VAC power or 24V/110VDC power, inputs 4-20mA or 0-10VDC control signal, moves valve to the right position, and achieves to automatic control, maximum output torque is 6000N·M.(CHQ series have got CE and explosion-proof certificate)



Performance Feature


Shell--The shell is made of aluminum alloy, with anodic oxidation treatment and polyester powder coating. It is strong corrosion-resistant and enclosure IP67,NEMA 4 and 6, IP68 and explosion-proof is optional.

Motor--Asynchronous motor, small, large torque, and small inertia force, F-class insulation rating, with thermal protection to avoid damaging.

Manual Structure--The design of handwheel is safe, reliable, labor-saving, small. Declutch to operate by handwheel if without power, and reset automatically when power on.

Indicator-- Installs indicator in the center axis and adopts convex mirror design, no cumulate water, more convenient to observe.

Space heater-- It is used for controlling temperature to avoid condensing internal of housing and keep dry.

Limit switch-- Mechanical, electronic double limit. Mechanical limit stopper is adjustable, safe and reliable; electronic limit switch is controlled by cam. Set position accurately and conveniently, and not affected by excessive handle.

Torque Switch-- (Except CHQ-005/008/010) Providing overload protection to avoid the damage of valve and electric actuator when jammed by cutting power automatically.

Self-locking--Accurate worm and worm gear transfer large torque efficiently , high efficiency, low noise (max. 50 dB), long life, with self-locking, prevent inversion, as stable and reliable transmission parts, no need to refuel.

Anti-off bolt—The bolt attaches to the shell and be not off when remove the shell.

Installation-- The installation size meets international standard ISO5211 / DIN3337.

Circuit--Controlling circuit meets the single-phase or three-phase power supply standard, circuit layout is reasonable and compact, terminals meet various of additional functional requirements effectively.

The display of valve position—During the opening or closing movement of actuator, the change of valve position on LCD is displayed with large numbers.

Adjust the phase sequence automatically—Intelligent actuator check and test the phase sequence for 3 phase power supply automatically, users no need to consider about the phase sequence.





Standard Technical Parameter


Enclosure :IP67,NEMA4, Exd II CT5



Optional:110VAC/1ph, 380V/440V/3ph,50/60HZ, ±10%



Asynchronous motor

Limit switch

2×Open/ Close, SPDT,250VAC 10A

Auxiliary limit switch

2×Open/ Close, SPDT,250VAC 10A

Torque switch

Close/Open, each 1, SPDT,250VAC 10A

Except CHQ-005/008/010




Fail safe/
Operating temperature

Internal-placed thermal protection, Open 115 ±5/Close 97 ± 5


Continuous position indicator

Manual operate

Declutching mechanism, operate by handwheel

Self-locking device

Self-locking by worm and worm gear

Mechanical limit

2 × external adjustable stopper

Space heater


Conduit entry

2 × PF 3/4”

Ambient temperature



Grease moly(EP type)


Steel, Aluminum alloy, Aluminum bronze,Polycarbonate

Ambient humidity

Max 90 RH



X Y Z 10g,0.234 Hz,30 minutes

External coating

Dry powder, Epoxy polyester,high anti-corrosion



Option Specification


Option scheme



Explosion-proof actuator(Exd CT5)

CHQ series


Water-proof actuator (IP68,10M,250HR)

CHQ series


Potentiometer unit(1K-10K)

CHQ series


Proportion control unit (control signal 4-20mA DC/1-5V/1-10V)

CHQ series


Local control units (local control open/stop/close optional switch, local/remote switch)

CHQ series


Travel 120°, 180°,270°

CHQ series


Direct current motor (24VDC)

CHQ series


Torque switch (SPDT× 2  250VAC 10A)

Except CHQ-005/008/010


Electric current position sensor (output 4-20mA DC)

CHQ series


Self-reset when power failure

CHQ series

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Mr. Lina Lin
Tel: 86-577-59890750
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Zhejiang Aoxiang Auto-Control Technology Co., Ltd.
NO.2608, Development Road, Wenzhou, Zhejiang, China (Mainland)
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