r"
^(?P<unit_type>SFA)(?P<unit_size>80|63|50|40|32|25)(?P<mounting_type>G|F)(?P<tank_port>T|)(?P<decompression_feature>0|1)(?P<sep_1>-)(?P<unit_series>1X)(?P<sep_2>/)(?P<seal_material>M)(?P<sep_3>/)(?P<pipe_port>01)(?P<additional_details>(.|[0-9])*)$
"
gm