Overview

• Steel housing
• Lock valve will lock a cylinder in place when a directional control valve is in the neutral position; operation oil is directed to one of the valve ports and oil can free flow to the corresponding cylinder port; the pressure on this valve port will shift the pilot spool opening the opposite check valve; this will allow oil to return through the opposite check valve
• Hardened steel seat and steel ball—should not be used in applications requiring absolutely zero leakage
• When using a pilot-operated check to lower a heavy load the valve may chatter
• An orifice in the line may be beneficial in some cases
• Maximum operating pressure: 3,000 psi
• Maximum flow capacity: 30 gpm
• Manufacturer: Prince Hydraulics