Single acting spool for SD25 valve section. 3IM = Single acting on port A. 4IM = single acting on port B. Same spool for both. A or B is decided by of spool mounting direction.
Single acting spool for SD25 valve section. 3IM = Single acting on port A. 4IM = single acting on port B. Same spool for both. A or B is decided by of spool mounting direction.