"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, Inlet Port in. SAE 8, Outlet Port in. SAE 8, Max. PSI 3,500, Spool qty. 2, Directional Control 2-spool cylinder valve, Adjustable Release Pressure PSI 2,000-3,500, preset 2,500, Max. Flow GPM 8. Can be converted to closed center or Power Beyond plug included with valve"