3 Spool Hydraulic Directional Control Valve Double Acting 11 GPM Solid Construction High Performance Spring Return Inner Check/Relief Valve Multiple Control Ways Wide Application AB: G3/8,7/8-14UNF3/4-16UNF:,Spool count: 3 Spool,Relief valve: Adjustable,PTN: 1/2',Center system: Open,Nominal flow: 11gpm (40l/min),PABTN: 3/8 ' Unthreaded sealed cylindrical pipe threads,Weight: 14.6 lb (6.6 kg),Dimensions (L* W* H): 12.2'*8'*6.6' (31*20*16.8 cm)