Enzymes that are highly specific for hydrolysis of the D-ribose 1 phosphate bond of ADP-D-ribose 1''-phosphate to produce ADP-D-ribose and phosphate ion.

Synonyms: ADP-Ribose 1''-Phosphate Phosphatases, Appr1p Phosphatase, ADP Ribose 1'' Phosphate Phosphatases, Phosphatases, ADP-Ribose 1''-Phosphate, EC 3.1.3.84, Phosphatase, ADP-Ribose 1''-Phosphate, ADP-Ribose 1''-Phosphate Phosphatase, ADP Ribose 1'' Phosphate Phosphatase