The Main Features of the DB Ringlock quick opening closure are the extreme simplicity, and opening and closing speed.

These operations are possible thanks to a resilient metal ring which is interposed between the hub and the closed cover.

The opening and closing of the ring are performed through a simple hand lever, with minimum effort by the operator.

The design and 3D simulation of the hinge, allows the quick unlocking and opening of the closure.

The seal is ensured by a special custom made lip seal, in order to adapt to different fluids and design temperatures.

Operator safety is guaranteed by the safety valve with false ring which, in the same way as the false tooth, makes possible to lock the ring once the cover is closed.