Pressure tester VM4

for valvesindustrialfor automotive applications

Overview
The VM4 is a manual tester for the inspection, testing and adjustment of pneumatic and electropneumatic turbo actuators. It provides clear separate readings for pressure and vacuum to support precise calibration in automotive, commercial and industrial environments.

Dual reading: pressure and vacuum
The VM4 features separate gauges for pressure and vacuum for improved readability:

• Pressure gauge (blue)
  • range: 0 → 2.5 bar
  • suited to automotive, commercial and industrial actuator checks
• Vacuum gauge (red)
  • range: 0 → -1 bar
  • operational capacity up to approx. -0.9 bar

Manual operation
The VM4 is operated manually to give the technician direct control over the test conditions:

• manual generation of pressure or vacuum
• progressive and controlled adjustment
• high sensitivity for fine calibration

Applications
Typical uses include adjustment and verification of:

• variable-geometry turbine (VGT) actuators
• wastegate (bypass valve) actuators
• pneumatic and electropneumatic control systems

Integration with VNT Connect
For electropneumatic actuators the VM4 can be combined with VNT Connect to separate pneumatic and electrical control:

• VM4 → supplies pressure or vacuum
• VNT Connect → manages the electrical signal

Advantage

• complete manual control of the actuator under test
• realistic simulation of operating conditions
• improved precision in adjustments

Superior precision
Compared with single combined gauges, the VM4 provides:

• dedicated, more readable scales
• better measurement resolution
• reduced misreading risk

Result

• more accurate actuator settings
• fewer calibration errors
• increased reliability of the turbo system

In summary
The VM4 is intended for:

• testing and calibration of turbo actuators
• precise adjustment work on turbo systems
• use in combination with VNT Connect for electropneumatic systems

Technical specifications

• Model: VM4
• Operation: manual tester (manual generation of pressure and vacuum)
• Pressure gauge (blue): range 0 → 2.5 bar
• Vacuum gauge (red): range 0 → -1 bar; operational capacity up to approx. -0.9 bar
• Separate pressure and vacuum readings for improved resolution
• Designed for VGT and wastegate actuators
• Compatible with VNT Connect for combined pneumatic and electrical control
• Intended uses: automotive, commercial and industrial actuator calibration
• Focus on progressive, controlled adjustment and high sensitivity