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