Description:Cat® Valve Groups are used to control flow, pressure, temperature or other variables. The type of valve used will depend on the size of the pipe, the overall pressure that the system operates, the flowing media, process conditions, and other factors. This group includes relief valve group, pilot valve group, hex socket bolt, cover kit, socket head bolt and spool spring. They are standard ports. With longer maintenance intervals, this extends your work cycles which saves you time and reduces lost revenue due to downtime. Choosing genuine Cat® Parts is a wise investment for your hard-working equipment.Work port A : 9/16 - 18 UNF - 2BWork port B : 9/16 - 18 UNF - 2BTank : 1 - 1/16 - 12 UN - 2BPressure : 1 - 1/16 - 12 UN - 2BMaximum Flow : 90 LPM (23.7 GPM)Maximum System Pressure : 24100 kPa (3495.41 psi)Relief Pressure : 2400 kPa (348 psi)Application:Consult your owner's manual or contact your local Cat Dealer for more information.