Swing Auxiliary Relief Valve PC200-8

This swing auxiliary relief valve Model YH-016 belongs to Pressure Relief Valve, dedicated to 20-ton CLSS closed load-sensing excavators Komatsu PC200-8, PC210-8, PC240-8 and PC200-8M0, OEM Part No.723-90-76101, also known as swing sub safety valve. It adopts threaded cartridge design, a pair mounted on swing branch cartridge holes of main manifold, exclusively matched with swing circuit pressure, not applicable to travel or cylinder circuits. Cooperated with Hydraulic Safety Valve and Hydraulic Relief Valve, it forms three-stage hydraulic safety circuit together with full machine main relief valve YH-039 and boom secondary overload valve YH-049. Standard swing relief protection pressure: 29.0MPa, negative pressure oil supply opening differential pressure 0.08MPa, maximum single valve flow capacity 168L/min. It supports full-circuit pressure inspection & debugging after connecting with 600 Series Test & Switching Valve.   The cartridge integrates six core functions: swing impac…