Quarter Turn Electric Actuator with Manual Override for Butterfly Valve Control

• Customization: Available
• Certification: CCC, ISO, CE
• Power Supply: AC380V
• Model NO.: RST-Q30
• Power Source: Electric Power
• Temperature: Ordinary Temperature
• Connection: Thread
• Material: Alloy
• Protection Rank: IP65/67/68
• Customized Support: OEM/ODM
• Warranty: 18 Months
• Torque Range: 50-5000nm
• Transport Package: PC to Carton Box, to Plywood Case
• Specification: 12.7KG
• Trademark: RST
• Origin: Yangzhou, China
• HS Code: 8501200000
• Production Capacity: 5000 Pieces/Month

Product Description

Product Description

Overview:

Overview:

The RST-Q Series Part-Turn Electric Actuators are designed to automate 90° rotary valves such as butterfly valves, ball valves, and plug valves. Featuring a compact and integrated design, these actuators are available in ON/OFF, modulating, and explosion-proof types, suitable for a wide range of industrial applications and control systems. The actuators meet GB/T 24923-2010 standards for general-purpose devices, and optional ExdIIBT4 explosion-proof configurations comply with GB3836 regulations.

Key Features:

Versatile Valve Compatibility: Ideal for 90-degree rotation valves including butterfly, ball, and damper valves.
Reliable Manual Operation: Integrated handwheel with automatic/manual switch-over without the need for levers.
Integrated Transmission Design: Compact structure, reduced installation space, and simplified appearance.
Multi-Environment Readiness: Available in general-purpose or explosion-proof models with IP65/IP67/IP68 protection.
Flexible Control Options: ON/OFF control, modulating control (4–20mA), and intelligent infrared remote setting.
Precision Positioning: Supports digital calibration of open/close positions and adjustable torque settings.
High Customizability: Optional ESD positioning, signal loss response, output feedback, and RS485 communication.

Specification

Item	Specification (Range by Model)
Model Range	RST-Q05 to RST-Q500
Torque Output	50 Nm – 5000 Nm
Rotation Angle	90° (Part-turn)
Output Speed	0.5–1 rpm
Power Supply	AC380V 50Hz (Optional AC220V/440V/660V)
Insulation Class	F
Protection Grade	IP65/IP67 (Optional IP68)
Explosion-proof Option	ExdIIBT4
Ambient Temperature	-20°C to +60°C (optional -40°C to +70°C)
Control Mode	ON/OFF, Modulating, Bus-type
Valve Mounting Standard	ISO 5211 flange compatible
Manual Override	Yes (integrated handwheel)
Working Time (Duty Cycle)	Short-time S2: 10 min (optional 15–30 min)
Optional Features	ESD, signal loss behavior, output feedback, RS485
Coating	High-temperature baking finish

Our Advantage

Packing & Delivery

FAQ

Q1: What type of valves is the RST-Q actuator compatible with?

A: It's designed for part-turn valves such as butterfly valves, ball valves, plug valves, and air dampers.

Q2: Can this actuator be used in explosive environments?
A: Yes, the ExdIIBT4 explosion-proof version meets GB3836.1 and GB3836.2 standards.

Q3: How is the manual operation handled?
A: Manual override is built-in, with automatic switching from electric to manual mode without levers.

Q4: Does it support signal feedback to DCS or PLC?
A: Yes, it supports 4–20mA current feedback and RS485 communication if ordered with feedback modules.

Q5: Can open/close positions be calibrated?
A: Yes, intelligent types support both mechanical and digital calibration via remote or local panel.

Q6: Is it waterproof and dustproof?
A: Yes, standard protection is IP65/IP67; IP68 available upon request.