About our Valve Diagnostics Service
Our Valve Diagnostics Service analyzes and diagnoses information collected through the control valve maintenance support system PLUG-IN Valstaff to discover and predict valve abnormalities that could previously be found only through overhaul inspections. This helps you to prevent facility shutdowns caused by control valves, allows you to focus on the actual work of maintenance, and helps you to streamline work the smart way.
Delivery of Valve Diagnostics Service diagnoses
Value of diagnosis service
Valve health visualization
The valve diagnostic report gives a quick overview of valve health
Smart Valve Positioner diagnostic parameter information
Smart Valve Positioner
Quantification of valve motion
Valstaff
Visualization of motion
Visualization of operation
Service details
Applicable valves
7 supported valve types: globe, double seated, cage, diaphragm, eccentric rotary, butterfly, and ball.
700 series：Models AVP701/702/703
Diagnosable conditions
The following phenomena can be detected by analyzing various combinations of operating data.
| Phenomenon | Azbil’s Smart Valve Positioners(with HART/FOUNDATION Fieldbus support) | |
|---|---|---|
| Models AVP202/207/302/307 | Models AVP701/702/703 | |
| Sticking | ○ | ○ |
| Galling | ○ | ○ |
| Damaged trim, clogging | ○ | ○ |
| Hunting after input of certain values to the positioner | ○ | ○ |
| Slowdown (underperformance before sticking/galling) | ー | ○ |
| Inadequate performance for fluid differential pressure | ー | ○ |
| Insufficient supply air pressure | ー | ○ |
| Positioner air circuit problems | ー | ○ |
Types of diagnosis
Three types of diagnostic service meet different needs at production sites.
Primary screening diagnosis
This identifies which valves among hundreds at the plant require close monitoring, and tells their condition.
Detailed diagnosis
Detailed analysis of customer-specified valves and valves assessed by primary screening as needing attention, in order to gain in-depth understanding of problem conditions.
Comparative verification
Even valves with completely identical specifications have different characteristics depending on the fluid used and the operating conditions. These characteristics can be understood by repeated comparative verification.
Tools required for diagnosis
The Valve Diagnostics Service collects and accumulates various diagnostic parameters held by Azbil’s HART® communication–compatible Smart Valve Positioner diagnostic devices in the control valve maintenance support system PLUG-IN Valstaff, and uses this valve operating data to make diagnoses.
Inquiries