DN12 Proportional Control Valve 200 Bar 4-20mA
Motorised Proportional Valve | CNXPROMOT12200
The CNXPROMOT12200 DN12 proportional control valve provides precise motorised flow control for demanding industrial applications operating from vacuum (-1 bar) up to 200 bar.
Featuring a DN12 flow path, 1/2" port and Kv 30 L/min flow capacity, the valve accepts standard 4-20mA or 0-10V proportional control signals, making it suitable for integration with PLCs, process controllers and industrial automation systems.
The valve is available in normally closed or normally open configurations and incorporates an integrated position detector for accurate valve position monitoring.
With a maximum media temperature of +180°C, PTFE sealing and compatibility with air, grease, fuel, hydrogen and nitrogen, the CNXPROMOT12200 provides a versatile proportional control solution for high-pressure and specialist fluid control systems.
Key Features
✓ DN12 high-pressure proportional control valve
✓ Pressure range from -1 to +200 bar
✓ 4-20mA or 0-10V proportional control signal
✓ Kv 30 L/min high-flow capacity
✓ 1/2" G port with optional NPT connection
✓ Normally closed or normally open
✓ Integrated valve position detector
✓ 12-48V DC electrical supply
✓ PTFE sealing
✓ Media temperatures up to +180°C
✓ Maximum media viscosity 300 cSt
✓ 100% proportional motorised positioning
✓ Optional failsafe return on power failure
✓ Optional mounting bracket
Proportional Flow Control
Unlike a conventional ON/OFF valve, the CNXPROMOT12200 provides proportional positioning, allowing the valve opening to be controlled according to an external analogue signal.
Control input options include:
✓ 4-20mA
✓ 0-10V
This allows the valve to regulate flow according to the signal supplied by a PLC, process controller or other compatible control system.
The integrated position detector provides valve position monitoring for automated process control applications.
High Pressure Capability – Vacuum to 200 Bar
Designed for demanding industrial applications, the DN12 proportional valve operates across an exceptionally wide pressure range:
Minimum Pressure: -1 bar vacuum
Maximum Pressure: +200 bar
This wide operating range makes the valve suitable for both vacuum and high-pressure control applications without sacrificing proportional positioning capability.
High Flow DN12 Design
The CNXPROMOT12200 combines high-pressure capability with a relatively large DN12 flow path.
Nominal Size: DN12
Kv Flow Factor: 30 L/min
Port Size: 1/2" G
Optional Port: NPT
The DN12 construction provides significantly greater flow capacity than smaller proportional control valves where increased throughput is required.
Technical Specification
Model: CNXPROMOT12200
Function: 2/2 way proportional motorised control valve
Nominal Size: DN12
Pressure Range: -1 to +200 bar
Kv Flow Factor: 30 L/min
Port: 1/2" G
Optional Port: NPT
Valve Function: Normally Closed or Normally Open
Body Material: Galvanised steel
Seal: PTFE
Maximum Media Temperature: +180°C
Ambient Temperature: -20°C to +70°C
Ambient Temperature with Failsafe: -10°C to +40°C
Maximum Media Viscosity: 300 cSt
Mounting Position: Vertical
Opening / Closing Time: 7 seconds
Position Detection: Integrated
Weight: 5kg including actuator
Electrical & Control Specification
Supply Voltage: 12-48V DC
Control Signal: 0-10V or 4-20mA
Power Consumption: 45 Watts while moving
The standard industrial analogue control inputs make the valve suitable for integration into automated machinery and process control systems.
Media Compatibility
According to the product specification, suitable media include:
✓ Air
✓ Grease
✓ Fuel
✓ Hydrogen
✓ Nitrogen
Maximum media viscosity is 300 centistokes (cSt).
Fluid compatibility should always be confirmed against the galvanised steel body, PTFE sealing and other wetted components before use.
High Temperature Fluid Control
The CNXPROMOT12200 is suitable for media temperatures up to +180°C, providing proportional control for applications involving elevated fluid temperatures.
Media Temperature: Up to +180°C
Standard Ambient Temperature: -20°C to +70°C
Ambient with Failsafe Option: -10°C to +40°C
The media temperature rating should not be interpreted as the permitted actuator ambient temperature.
Normally Closed or Normally Open
The valve can be supplied in either:
✓ Normally Closed (NC)
✓ Normally Open (NO)
This allows the required valve configuration to be selected according to the process and preferred normal operating position.
Optional Failsafe Function
An optional failsafe actuator function is available.
In the event of electrical power failure, the failsafe system returns the valve to its initial position, providing a defined valve state when electrical power is lost.
Please note that the specified ambient temperature range with the failsafe option is -10°C to +40°C.
Typical Applications
The combination of 200 bar pressure capability, DN12 flow capacity and 4-20mA / 0-10V proportional control makes the CNXPROMOT12200 suitable for demanding applications including:
✓ Industrial process control
✓ High-pressure flow regulation
✓ Automated machinery
✓ PLC controlled systems
✓ Test and calibration equipment
✓ Gas control systems
✓ Hydrogen and nitrogen control
✓ Fuel control systems
✓ Vacuum control
✓ High-temperature fluid control
✓ Grease and higher-viscosity media control
| Model | DN Range | Max Pressure | Flow (Kv) | Port Size | Weight | Best Use |
|---|---|---|---|---|---|---|
| DN1 | 0–1 | 1000 bar | up to 0.5 | 1/4" | 0.5 kg | Ultra high pressure, low flow, test systems |
| DN6 | 0–6 | 416 bar | up to 5 | 1/4" | 0.5 kg | General industrial control |
| DN12 | 0–12 | 416 bar | up to 30 | 3/8"–1/2" | 0.8 kg | Higher flow systems |
| DN12 | 12 | 200 bar | 30 L/min | 1/2" | 5.0 kg | High pressure 4-20mA / 0-10V process control |
| DN20 | 0–20 | 416 bar | up to 30 | 3/4" | 3.0 kg | Maximum flow (compact range) |
| DN25 | 25 | 200 bar | High (process level) | Flanged / industrial | ~32 kg | Process systems / heavy duty |
| DN40 | 40 | 200 bar | Very high | Flanged / industrial | ~35 kg | High flow + system control |
Need Help Selecting a Proportional Control Valve?
Correct proportional valve selection depends upon the media, inlet and outlet pressures, required flow rate, control signal and operating temperature.
For applications approaching the limits of the valve, or where accurate flow sizing is required, contact our technical team with your operating conditions and required flow rate.
We can help determine whether the CNXPROMOT12200 DN12 200 bar proportional valve or another proportional control valve is best suited to your application.