Main issues
- Permanent monitoring of the tightness of the stem sealing
- Not only as a snapshot under testing conditions or under operation conditions elaborately with sniffing equipment
- Monitoring in all operating conditions (independent of media, process pressure, process temperature, process-related load changes, …)
- Apllicability of the system to all quarter turn valves
- Comparability of various valve types of various valve manufacturers
- Independence of tests and certificates of manufacturers and inspection companies