"This Prince hydraulic valve features a compact design that is ideal for tractors and other low flow operations. 2 spool, monoblock design and float on first spool. SAE #8 ports eliminate leakage, enclosed handles eliminate exposure to elements. Working Port in. SAE 8, Spool qty. 2, Max. PSI 3,500, Inlet Port in. SAE 8, Max. Flow GPM 8, Outlet Port in. SAE 8, Directional Control 2-spool cylinder valve, Adjustable Release Pressure PSI 2,000-3,500, preset 2,500. Can be converted to closed center or Power Beyond plug included with valve"