Quarter-Turn Electric Actuator

Quarter-Turn Electric Actuator is an electric device that controls valves through precise 90° rotation for flow regulation in industrial automation systems

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Product Description

GRAT Quarter-turn electric actuator rotates to drive valves, accepts digital/analog signals for intelligent precise positioning.

It features double limit & overload/overheat protection, compatible with ball/butterfly valves to form electric control valves.

Product Structure

Electric actuator consists of drive motor, reduction mechanism, transmission mechanism, and control part.

Drive motor converts electricity to mechanical power. Reduction mechanism reduces speed and boosts torque. Transmission mechanism transfers torque to controlled objects. Control part receives signals via controller for precise regulation.

As Featured In

Power Supply

AC 110V / 220V / 380V
DV 12V / 24V

High efficiency

high torque

low power consumption

Torque

20~2000NM

Ingress Protection

Dustproof and waterproof

with IP67 rating

Accuracy

Hysteresis<0.5%

Dead Zone<0.5%

Feedback Error<0.5%

Valve Adaptable

0~90°

ball valve

butterfly valve

I/O

0-10V

4-20mA

Modbus

Optional Function

Dehumidification and heating

Passive contact switch

Over-torque protection

Application

Quick Opening Vacuum Ball Valve For Automotive Wastewater Recycling 3

Quick Opening Vacuum Ball Valve For Automotive Wastewater Recycling 1

GRAT Ventilation Butterfly Valve Application for

HEAT tREATMENT

Burner Ventilation

GRAT Guide Vane Motor in Industrial chiller unit side look

HVAC Project

Centrifugal Chiller Compressor

AutomatiON Project

Rail Way Washing

Model Representation Method

Electric Actuator
Model		EA-50	EA-100	EA-200	EA-400	EA-600	EA-1000	EA-1600	EA-2500
Output Torque		50N·m	100N·m	200N·m	400N·m	600N·m	1000N·m	1600N·m	2500N·m
Recommended Valve Adaptation	Ball Valve	DN25-40	DN50-65	DN65-80	DN80-100	DN125-150	DN200-300	DN300	DN400
Recommended Valve Adaptation	Butterfly Valve	DN32-50	DN50-125	DN150-200	DN200-250	DN300	DN400-600	DN600	DN700-800
Action Time		15S/30S	15S/30S	15S/30S	30S	45S	30S	48S	60S/75S
Rotation Angle		0-90° 0-360°	0-90° 0-360°	0-90°	0-90°	0-90°	0-90°	0-90°	0-90°
Motor Power	AC220V	10W	25W	40W	90W	90W	210W	210W	220W
	AC380V	6W	15W	30W	40W	40W	300W	300W	320W
	DC24V	13W	25W	35W	70W	70W	0	0	0
Rated Current	AC220V	0.16A	0.32A	0.35A	0.54A	0.64A	0.96A	0.98A	1.03A
	AC380V	0.07A	0.10A	0.15A	0.29A	0.29A	0.45A	0.46A	0.48A
	DC24V	1.28A	2.03A	3.57A	5.13A	6.04A	0	0	0
Motor Life	AC220V/380V	S2 duty cycle, service life ≥100,000 hours
Motor Life	DC24V	lifetime 600 hours, ultimate 2000 hours
Weight		2.5kg	3.5kg	8kg	8.5kg	9kg	20kg	21kg	22kg
Power Supply		AC 110V, AC 220V, AC 380V, DC 24V, DC 220V (selectable)
Accuracy		Backlash≤0.5% Dead Zone≤0.5% Feedback Error≤0.5%
Insulation Resistance		100 MΩ at 500 V DC
Withstand Voltage		1,500 V AC for 1 minute
Protection Rating		IP67
Limit Components		■ Electric operation: Full open/close limit switches ■ Manual operation: Mechanical stops
Protection Device		Overheat protector (auto-resetting type)
Installation Orientation		360° adjustable
Electrical Interface		M20×1.5 waterproof cable glands×2 (1 for power cable, 1 for signal cable)
Ambient Temperature		Standard: -30℃ to 60℃ ▲High-temperature type: -50℃ to 125℃
Testing Standard		JB/T8219-2016

Dimension drawing

Circuit Diagram

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

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

PIU

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

CPT

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

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

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

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

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.

Quarter-Turn Electric Actuator

Tags

Product Description

Product Structure

As Featured In

Power Supply

High efficiency

Torque

Ingress Protection

Accuracy

Valve Adaptable

I/O

Optional Function

Application

Chemical

Water Treatment

HVAC

Industrial Automation

Burner Ventilation

Centrifugal Chiller Compressor

Rail Way Washing

Model Representation Method

Dimension drawing

Circuit Diagram

S

MS

PIU

CPT

PCU

G

SP

H

Documents & Drawings:

GRAT-Quarter-turn Electric Actuator Selection Manual

GRAT-EA-Electric Actuators Instruction Manual

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Frequently Asked Questions

IoT Series

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