Editorial Technical Reference

Valve Actuator

This page explains how Valve Actuator is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A device that operates a valve by converting energy into mechanical motion to open, close, or modulate flow.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Valve Actuator

Definition
A valve actuator is a component that provides the mechanical force required to position a valve's closure member, such as a plug, ball, or disc. It serves as the interface between the control system and the valve body, enabling automated or manual operation to regulate fluid flow through an outlet nozzle or port. The actuator receives a control signal—electrical, pneumatic, or hydraulic—and converts this input energy into linear or rotary motion. This motion is transferred via a stem or shaft to the valve's internal mechanism, moving the closure element to the desired position (open, closed, or throttled) to control the flow of material through the outlet. Typical materials include aluminum alloy, stainless steel, and engineering plastics. Key parameters include operating pressure (1.0–1.6 MPa), torque (50–2000 N·m, ISO 5211), supply voltage (24 ±10% V DC), control signal (4–20 mA, IEC 60381), operating temperature (-40–85 °C), enclosure rating (IP54–IP65, IEC 60529), stroke time (15–60 s), positioning accuracy (±0.05%), duty cycle (50–75%, IEC 60034), weight (5–120 kg), flange mounting (F05–F25, ISO 5211), and humidity (≤95% RH, non-condensing). These values are reference ranges and must be verified for the specific model and application. Standards listed are procurement references, not proof of certification. Always confirm model-specific values and standards with the legal manufacturer or supplier.
Working Principle
The actuator receives a control signal (electrical, pneumatic, or hydraulic) and converts this input energy into linear or rotary motion. This motion is transferred via a stem or shaft to the valve's internal mechanism, moving the closure element to the desired position (open, closed, or throttled) to control the flow of material through the outlet.
Common Materials
Aluminum Alloy, Stainless Steel, Engineering Plastics
Technical Parameters
ParameterTypical rangeNotes & selection driver
Torque50–2000 N·mSelect based on valve size and classISO 5211
Supply Voltage24 ±10% V DCOther voltages on request
Control Signal4–20 mAStandard analog inputIEC 60381
Operating Temperature-40–85 °CExtended range available
Enclosure RatingIP54–IP65IP65 for outdoor useIEC 60529
Stroke Time15–60 sFor 90° rotation
Positioning Accuracy±0.05 %Full stroke
Duty Cycle50–75 %For modulating dutyIEC 60034
Weight5–120 kgDepends on torque and options
Flange MountingF05–F25Match valve top flangeISO 5211
Humidity≤95 % RHNon-condensing

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Motor/Drive Unit
    Converts input energy (electrical, pneumatic, hydraulic) into mechanical motion.
    Material: Copper windings, steel housing
  • Gearbox/Transmission
    Amplifies torque from the motor to achieve the required output force for valve operation.
    Material: Steel alloys
  • Output Shaft/Stem Part
    Connects the actuator to the valve, transferring motion to the valve's closure element.
    Material: Stainless steel
  • Housing Part
    Protects internal components from environmental conditions and contains lubrication.
    Material: Aluminum alloy or engineered plastic

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 600 psi
flow rate: 0-1000 GPM
temperature: -40°C to 150°C
slurry concentration: Up to 30% solids by weight
Media Compatibility
✓ Water/Steam Systems ✓ Oil/Gas Pipelines ✓ Chemical Processing Fluids
Unsuitable: High-Purity Semiconductor Manufacturing (due to particulate generation risk)
Sizing Data Required
  • Valve Torque Requirement (Nm/lb-ft)
  • Actuation Speed (seconds/90° rotation)
  • Available Power Source (Voltage/PSI)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Actuator motor burnout
Cause: Overloading due to excessive torque demand from valve sticking, misalignment, or foreign material obstruction; inadequate lubrication leading to increased friction; electrical issues like voltage spikes or phase imbalance.
Gear train or linkage failure
Cause: Wear and fatigue from cyclic operation, misalignment causing uneven stress distribution, corrosion from exposure to moisture or chemicals, and inadequate maintenance leading to lack of lubrication or debris accumulation.
Maintenance Indicators
  • Unusual grinding, clicking, or humming noises during operation indicating mechanical wear or electrical issues
  • Visible leaks of hydraulic fluid or lubricant, or erratic valve movement (e.g., stuttering, slow response) suggesting seal failure or pressure loss
Engineering Tips
  • Implement a predictive maintenance program using vibration analysis and thermal imaging to detect early signs of wear, misalignment, or overheating in the actuator and valve assembly.
  • Ensure proper environmental protection (e.g., enclosures, seals) against moisture, dust, and corrosive agents, and conduct regular calibration and alignment checks to prevent undue stress on components.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 5211:2017 - Mounting of actuators on industrial valves ANSI/ISA-75.05.01-2000 (R2015) - Control valve terminology DIN EN 15714-3:2009 - Industrial valves - Actuators - Part 3: Pneumatic actuators

Quoted from the published standard.

Manufacturing Precision
  • Shaft diameter: +/-0.01mm
  • Mounting flange flatness: 0.05mm
Quality Inspection
  • Torque output verification test

Manufacturers of Valve Actuator

11 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

ZFA Valve
Tianjin, Tianjin, CN
Founded 2006
ISO9001 CE WRAS ISO14001 +2
Also makes: Gate/Valve, Pneumatic Actuator, Butterfly Valve and 2 more
Managed by the manufacturer
Listed on the company's own website
Landee Industries
Xiamen, Fujian, CN
Founded 1994230+ staff
ASME U-Stamp
Also makes: Butterfly Valve, Heat Exchanger, Check Valves and 6 more
Listed on the company's own website · profile compiled by CNFX from public sources
AUTORUN Control
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
FREYA Electric Actuator
Tianjin, CN
Listed on the company's own website · profile compiled by CNFX from public sources
GEYA
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Juhang Automation
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Kanede Controls
Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Shanghai Datian Valve Co., Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Tianyu Valves
Zhejiang, CN
Also makes: Butterfly Valve, Globe Valve, Check Valve and 8 more
Listed on the company's own website · profile compiled by CNFX from public sources
Zhejiang Aoxiang Auto-Control Technology Co., Ltd.
Zhejiang, CN
Also makes: Linear Motor, Butterfly Valve, Ball Valve and 5 more
Listed on the company's own website · profile compiled by CNFX from public sources
Zhejiang Bigtork Valve Automation Co., Ltd.
Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Frequently Asked Questions

What is the operating pressure range for this valve actuator?

The reference range is 1.0–1.6 MPa. Confirm the exact range for your model and application with the manufacturer.

What control signals are supported?

The standard analog input is 4–20 mA per IEC 60381. Other signal types may be available on request. Verify compatibility with your control system.

What enclosure ratings are available?

The reference range is IP54–IP65 per IEC 60529. IP65 is suitable for outdoor use. Confirm the rating for your specific model.

How do I select the correct torque?

Torque range is 50–2000 N·m per ISO 5211. Selection depends on valve size and class. Consult the valve manufacturer for required torque.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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