Drain Trough, SVCE (532, 590, 632, 690)
  532     Use Regardless of Serial Number.
  590     Use Regardless of Serial Number.
  632     Use Prior to Serial #1810000.
          Starting With #1810000 See 7017704.
  690     Use Prior to Serial #1810000.
          Starting With #1810000 See 7017704.