Instrumentation Inspection

Control Valves Inspection

Control valves are the final control elements in a process loop. We inspect the valve body, actuator, and positioner to ensure they respond accurately to control signals and maintain precise process conditions.

Aim

To verify the mechanical integrity, precise actuation, and accurate response of process control valves.

Scope of Inspection

Visual inspection of valve body, bonnet, and trim (where possible)

Actuator condition and air supply assessment

Positioner mounting and linkage inspection

Stroke testing and travel verification

Fail-safe action verification (fail open/close)

Seat leakage assessment (passing)

Air line and tubing connection checks

Verification of accessories (limit switches, solenoid valves)

Key Benefits

Ensures stable and accurate process control

Prevents process variability and quality issues

Reduces energy waste from passing valves

Validates critical safety interlock actions

Optimizes valve maintenance and overhaul planning

Inspection Support

Valve stroke and travel logsCondition and operability reportsPositioner calibration verification dataSeat leakage assessment reportsFail-safe action test recordsDefect identification logsMaintenance and repair recommendationsAccessory functional checklists