Exhibit 23.1 INDEPENDENT AUDITORS' CONSENT Graham Corporation We consent to the incorporation by reference in Registration Statement Nos. 2-83432, 2-82275, 33-82432, 333-00401 and Post-Effective Amendment No. 1 to Registration Statement No. 33-82432 of Graham Corporation and subsidiaries on Forms S-3 and S-8 of our reports dated May 17, 2002, appearing in this Annual Report on Form 10-K of Graham Corporation and subsidiaries for the year ended March 31, 2002. /s/ Deloitte & Touche LLP Deloitte & Touche LLP Rochester, New York June 27, 2002 page 1 of 1