2 Spool Hydraulic Valve 21 GPM 3625 PSI Hydraulic Directional Control Valve w/Joystick SAE Ports Double Acting Valve Features: Durable cast iron construction provides long-term usage. The relief valve range can reach up to 3625 PSI and the maximum flow is up to 21 GPM. All spools are standard double acting with spring return to neutral place which are ideal for double acting cylinders. Used for small tractors, tractors loaders, log splitters and other mobile. Specification: A & B Work Ports: 10 SAE O-Ring (7/8″-14) Thread Inlet Port: 10 SAE O-Ring (7/8″-14) Thread Outlet Port: 12 SAE O-Ring (1-1/16) Thread Max Operating Pressure: P = 3625 PSI, T = 725 PSI, A & B = 4350 PSI Nominal flow: 21 GPM Relief valve: Adjustable Package Includes: 1 x 2 Spool 21 GPM Hydraulic Directional Control Valve This loader control valve come with 2 spools, with cast iron construction for long-time use. The relief valve range is up to 3625PSI and the maximum flow is up to 21GPM. A & B Work Ports: 10 SAE O-Ring (7/8-14) Thread, Inlet Port: 10 SAE O-Ring (7/8-14) Thread, Outlet Port: 12 SAE O-Ring (1-1/16) Thread. The check valve in the valve body ensures that the hydraulic oil does not return, and the overflow valve in the valve body can adjust the working pressure of the hydraulic system. Hydraulic control valve used to operate double-acting cylinders. There are springs at the bottom of the handles that make the joysticks easy to control. Fit for small tractors, tractors loaders, log splitters, and etc.