PRINCE 20 SERIES 1 SPOOL CONTROL VALVE Brand new Prince "20" series hydraulic control valve. Interchangeable with other popular brands of 20 GPM sectional valves. Choose the spool type required for your application from the drop down box above. Furnished with handle, bolt kit and all o-rings to seal between sections. Inlet section has both top and side inlet and outlet ports.Outlet section has side ports. Each section has load checks.