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Explosion-Proof Electric Actuator

The explosion-proof actuator adopts specially designed casings, motors, and dedicated sealing components to prevent explosions caused by electric sparks or high temperatures. It has obtained CNEx certification (Ex db ⅡC T6 Gb) and is widely used in hazardous areas such as petrochemical plants, coal mines, and pharmaceutical facilities to control valves, pipelines, and equipment.

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Product Description

GRAT explosion proof electric actuator ensures maximum safety and effective protection against potential hazards. It can withstand high temperatures, pressure, and flammable substances, making it a reliable choice for hazardous environments.

Ex db ⅡC T6 Gb

Ex tb IIIC T80°C Db

Flameproof enclosure with increased safety

Product Structure

The GRAT explosion-proof actuator features a robust aluminum alloy and stainless steel housing for maximum durability.
Designed with an explosion-proof enclosure, it integrates a heavy-duty gear set, limit switch assembly, and potentiometer, providing reliable transmission and multiple feedback options for precise valve control.

EA 100 Ex exploded view 1 e1741932430616

As Featured In

Power Supply

AC 24V/110V/220V/380V

DC 24V

High efficiency

low power consumption, high torque

Torque

Output torque 50-600N · m

Actuation time 20-45S

Ingress Protection

Dustproof and waterproof with an IP67 rating

Accuracy 

Hysteresis<0.5%

Dead Zone<0.5%

Feedback Error<0.5%

Valve Adaptable

0~90°

ball valve

butterfly valve

I/O

4-20mA

0-10V

Modbus

Optional Function

Dehumidification and heating

Passive contact switch

Over-torque protection

Explosion proof feature

Explosion-proof Performance

Flameproof joint

Width of flameproof joint
L ≥ 12.5mm
Gap of flameproof joint
i ≤ 0.15mm

Epoxy resin adhesive

With over 10mm epoxy resin bond length to ensure strength and sealing performance.

Encapsulation

With over 20mm epoxy resin potting in cable through-holes

Threaded flameproof joint

Length of Thread Engagement 8mm
Number of Engaged Threads 5

patent

DDS & PPD Tech

Quick Convenient, Direct Debugging Switch in electric actuators

DDS
PPD

Application

plug valve used in cementing

Petrochemical

Metallurgy

Metallurgy

GRAT Guide Vane Motor used in Industrial chiller unit

HVAC

Quick Opening Vacuum Ball Valve For Automotive Wastewater Recycling 1

Industrial Automation

Petrochemical

Petrochemical Project

Fracturing & Cementing

Application of Explosion proof Electric Fixed Ball V port Control Valve in Central Air Conditioning Return Water System 3

HVAC Project

AC return water

Explosion Proof Electric Threaded Regulating Valve

fire protection Project

Automatic Water Supply

Power Type:Electric
Material:Aluminum Alloy, Stainless Steel
Certification:CCC、ISO、CE
Torque Range:50Nm, 100Nm, 200Nm, 400Nm, 600Nm
Power Supply:AC 24V/110V/220V/380V, DC 24V
Ingress Protection:IP67
Control Mode:On/off, Positioning, Throttling, Modulating
Input/Output:4-20mA, 0-10V, Modbus
Valve Connection:ISO5211, DIN3337, VDI/VDE 3845,Flanged, Wafer

Model Representation Method

Specifications

EA-600-Ex indicates an electric explosion-proof actuator with an output torque of 600 N·m.

Explosion-Proof Electric Actuator
ModelEA-50-ExEA-100-ExEA-200-ExEA-400-ExEA-600-Ex
Output Torque50N·m100N·m200N·m400N·m600N·m
Recommended
Valve
Adaptation
Ball ValveDN15-40DN50-65DN65-80DN80-100DN150-200
Butterfly ValveDN32-50DN50-125DN150-200DN200-250DN300
Action Time20S30S30S30S45S
Rotation Angle0~90°0~90°0~90°0~90°0~90°
Motor PowerAC24V10W25W000
AC110V10W25W40W90W90W
AC220V10W25W40W90W90W
AC380V6W15W30W40W40W
DC24V13W25W40W70W70W
Rated CurrentAC24V1.5A2.12A000
AC110V0.24A0.57A0.63A1.12A1.18A
AC220V0.15A0.30A0.35A0.64A0.67A
AC380V0.07A0.10A0.19A0.29A0.29A
DC24V1.28A2.03A3.12A7.8A8.0A
Weight4.5Kg5.0Kg9.0Kg9.5Kg10.0Kg
Insulation Resistance100 MΩ at 500 V DC
Withstand Voltage1,500 V AC for 1 minute
Protection RatingIP67
Explosion-proof RatingEx db ⅡC T6 Gb
Installation Orientation360° adjustable
Electrical Interface2-M20x1.5 explosion-proof plugs; Users to install corresponding explosion-proof cable glands based on selected cables
Control CircuitType S/MS/PIU/SP/PCU/CPT/G/H
Optional Features◆ Dehumidification heater ◆ Passive contact switch ◆ Over-torque protection ◆ Field protection unit
Testing StandardJB/T8219-2016, GB/T 3836.1-2021, GB/T 3836.2-2021
EA 50、100
EA 200、400、600

Circuit Diagram

S

S

Switching Action Mode:Switching operations (open/close) are achieved via AC switching signals, and a set of active position signals indicating fully open/fully closed status are output.

MS

MS

Switching Action Mode: Outputs passive contact signals. Structure:Equipped with two intermediate position switches.

PIU

PIU

Switching Action Mode: Outputs 0~1000Ω feedback signal. Structure: Equipped with 500Ω or 1kΩ potentiometer.

CPT

CPT

Switching Action Mode:
Outputs 4~20mA valve position feedback signal. Structure: Equipped with 1kΩ potentiometer and R/I converter.

PCU

PCU

Regulating Action Mode:Accepts 4~20mA control signal input and outputs 4~20mA valve position feedback signal. Structure: Integrated with 1kΩ potentiometer and control module (servo amplifier).

G

G

DC switching signals are output from the circuit via an external DC power supply to control the opening/closing program, and a set of passive contact signals corresponding to fully open/fully closed positions are provided.

SP

SP

Switching Action Mode: 
Controls valve opening angle via switching circuit, corresponding to potentiometer resistance value, while enabling intermediate position control function. Structure: Integrated with potentiometer and intermediate position switch.

H

H

Three-phase AC switching signals are output through an external three-phase power phase-reversing circuit to control opening/closing operations, accompanied by a set of passive contact signals for fully open/fully closed position indication.

Documents & Drawings:

Explosion Proof Electric Actuator scaled
GRAT-Explosion-Proof Electric Actuator Selection Manual
EX Explosion proof Series Electric Actuators Instruction Manual
EX-Explosion-proof Series Electric Actuators Instruction Manual

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