The new standard requires an annual test at operating pressure. A full inspection or replacement must be considered in the event of a flashback or, at the latest, five years after commissioning, depending on heaviness of use. The date of commissioning is the key, not the date of manufacture.
WITT Makes Compliance Easy
Our services at a glance:
✓ Professional testing service with short turnaround times
✓ Annual testing and complete inspections (including flashback testing of flashback arrestors) in accordance with EN 17931:2026
✓ Expert advice on testing, inspection, and replacement requirements
✓ Enhanced safety and peace of mind for users, equipment, and processes
Our product labels are also being updated to meet the new requirements. Beginning at the end of 2026, the date of first commissioning can be recorded directly on the product label.