Supplier: XCM-Parts Name of product: PC Valve Part number: 723-40-71900 Condition: OEM new Warranty: 1-3 months Payment: T/T , Western Union , PayPal , Credit Card Delivery: estimated 7 days Komatsu PC200-8 Excavator PC Valve is a unique core component of Komatsu's hydraulic system. Its full name is Proportional Control Valve, which is known as the "hydraulic brain" that controls the operation of the excavator.