r"
^(?P<operating_fluid>M)(?P<sep_1>-)(?P<unit_type>SR)(?P<unit_size>\d{1,2})(?P<mounting_type>K)(?P<unit_design>E|D)(?P<cracking_pressure>\d{1,3})(?P<sep_2>-)(?P<unit_series>1X)(?P<sep_3>/)(?P<seal_material>V|)(?P<additional_details>(.|[0-9])*)$
"
gm