r"
^(?P<mounting_type>Z)(?P<number_of_function>2)(?P<unit_type>S)(?P<unit_size>6)(?P<function_in_port>A|B|-)(?P<cracking_pressure>1|2|3|4)(?P<sep_1>-)(?P<unit_series>6X)(?P<sep_2>/|=)(?P<seal_material>V|)(?P<surface_coating>J3|)(?P<pipe_port>/60|)(?P<special_version>SO40|SO55|SO60|SO150|)(?P<additional_details>(.|[0-9])*)$
"
gm