Can the 4630/4640 cylinder only be replaced?

The 4040(XP) door closer can be used as a temporary replacement in a 4630/4640 operator to provide manual control of the door while the 4630/4640 closer cylinder is being repaired or a replacement ordered.

  • The 4631 cylinder part number is 4631-3971
  • The 4642 cylinder part number is 4642-3971

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