Single Spool. Double acting with conversion plug SBA2. Fully balanced select-fit honed spools with excellent metering characteristics give maximum load holding capability and long life. 30 GPM capacity, 2,500 PSI maximum pressure. 2,000 PSI relief. 3/4" NPTF inlet and outlet. 1/2" NPTF work ports. Externally adjustable relief. Built-in load checks. Conversion plug. Power beyond capability. Open or closed system. Float position available.