Introduction
A proportional valve that converts a 4–20mA current signal into precise valve opening control for stable industrial flow regulation.
Specification
|
Mode |
4-20mA Proportional Valve |
|
Valve Body Diameter |
1/4", 3/8", 1/2", 3/4", 1", 1-1/4" (Optional NPT/BSP) |
|
Valve Body Material |
Brass |
|
Actuator Material |
Engineering Plastics |
|
Sealing Material |
FKM&PTFE |
|
Wiring Diagram |
DC9-24V (5 Wires Control & Position Feedback) |
|
Working Voltage |
DC9-24V |
|
Working Current |
≤500mA, |
|
Working Medium |
Fluid, Air |
|
Actuator Rotation |
90° |
|
Torque Force |
4N.m |
|
Switch Indicator |
YES |
|
Manual Override |
NO |
|
Cable Length |
0.5 m (Optional 1.5m) |
|
Position |
Any Position (0% ~ 100% is ok) |
|
Working Pressure |
Max MPa |
|
Environment Temperature |
-15℃ ~ 50℃ |
|
Liquid Temperature |
2℃ ~ 90℃ |
|
Lifetime |
70000 times (testing pressure is 0.4 MPa, medium is water) |
|
Protection Class |
IP67 |
Signal & Control Precision
4–20mA current signals provide superior anti-interference for reliable long-distance transmission.
Linear stepless regulation enables precise flow control that responds instantly to signal changes.
The 4mA baseline ensures active fault detection to safeguard system operations.
Application
Process Flow Control
Continuous regulation of liquid and gas flow in production systems
Water Treatment Systems
Dosing, circulation, and pipeline flow control
Chemical Processing Systems
Controlled transfer and mixing of process media
Automation Equipment Systems
Signal-driven flow regulation in automated production lines
Quality & Certification Control
Production Standards
Controlled machining tolerance for key components
Assembly consistency inspection across production batches
Functional Testing
Full 4–20mA signal response verification
Pressure and leakage testing
Continuous cycle operation testing
Compliance Documentation
Material traceability reports available
Factory inspection records provided
CE / ISO compliance available for selected configurations
Engineering Support Services
Selection Support
Technical guidance for valve sizing and system matching
Commissioning Support
Assistance in signal calibration and on-site adjustment
Integration Support
Support during installation and system connection
After-Sales Support
Spare parts supply and long-term technical assistance
FAQ
Q1: Why is 4–20mA used instead of voltage signals?
Because current signals are more stable over long distances and less affected by electrical interference in industrial environments.
Q2: Can this valve be used directly with PLC systems?
Yes, most PLC systems support 4–20mA analog output and can directly drive the valve.
Q3: What happens if the signal drops below 4mA?
It is typically treated as system fault or zero reference state depending on control configuration.
Q4: Is the control response linear?
Yes, the valve is designed for linear conversion between input current and valve opening.
Q5: Can it operate continuously for long periods?
Yes, it is designed for continuous modulation in industrial process control systems.
Q6: What parameters must be confirmed before selection?
Signal range, flow requirement, pressure condition, media type, and installation interface should be confirmed.
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