Industrial hydraulic power [electronic resource]. - Virginia ITC Learning Corporation 1996. - 5 electronic computers optical disc (CD-ROM) col. 4 3/4in. user's guide - ITC Learning . Summary: This comprehensive lesson covers pressure control valves. The program shows and explains how various pressure control valves function and operate in hydraulic systems Subjects--Topical Terms: Hydraulic accumulatorsHydraulic cylindersHydraulic engineeringHydraulic engineering--Equipment and suppliesHydraulic motors Dewey Class. No.: 627 IND 1996