Inspection and batch certification procedures

At Closen, we do not rely on overseas sample testing. Every shipment of components is unpacked at our facility in Chania and undergoes thorough visual and mechanical checks before final packaging.

Technical breakdown of checkpoints

The inspection process focuses on two key areas:

• Quality check: Sealing verification for the silicone perimeter and checking for molding defects.
• Traceability: Logging the batch number of the ABS valves for every package leaving the warehouse.

Importance in daily use

A properly sealing valve ensures air resistance stays exactly at the setting you select. This prevents unexpected air leaks around the edges during intense physical effort.