In the block design version, the A-10 is flanged, and not installed using the threads, as is usually done. There are two through-holes available for fastening. The pressure adaption is made either via a flange connection or a G 1/4 female thread.
Since last year, the A-10 has held a GL approval (Germanischer Lloyd) for use in offshore applications. This certificate is now also valid for the block design.