NORMAL OPEN AND NORMAL CLOSE COMPLETE SHARED TYPE VALVE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a valve structure devised free to be shared for normal open and normal close with simple labor.;SOLUTION: This valve structure is devised to change over channels by moving a spool 2 in the axial direction in a state of fitting a valve unit U in a storage space 30 formed on a valve main body 3 by forming the valve unit U of a holder member 1 and the spool 2. It is formed free to change over the channel to a first storing state to make the channel normal open and to a second storing state to make the channel normal close by storing the valve unit in the storing space free to reverse so that the axial direction of the spool becomes reversed.;COPYRIGHT: (C)2002,JPO