GVO XJBN-01552 Distributor Negative Control Valve Negative Feedback Valve Swing Priority Valve for R320LC-9 R330LC-9A R330LC-9S

GVO XJBN-01552 Distributor Negative Control Valve Negative Feedback Valve Swing Priority Valve for R320LC-9 R330LC-9A R330LC-9S

 Key attribute

Product profile

• Precise Negative Flow Control – As a negative feedback relief valve, it senses pressure changes in the neutral return circuit and creates a negative feedback signal to automatically adjust main pump displacement. When no operation is performed, system pressure rises, and the feedback signal reduces pump displacement to minimum, significantly lowering energy loss and system heat generation for idle fuel savings.

• Swing Priority Function – During combined operations of swing with boom or arm, the valve prioritizes hydraulic flow to the swing motor. This prevents oil from flowing excessively to low-pressure actuators and ensures coordinated, responsive compound movements.

• Pressure Balance & Overload Protection – The valve provides pressure balance and quickly relieves system overpressure, preventing hydraulic components from damage due to overload and ensuring safe, stable operation.

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GVO Value

  Guangzhou GVO Precision Hydraulic Co., Ltd. is a professional manufacturer and exporter of hydraulic components, electrical systems, and engine parts for excavators. Since 2017, we have been serving the global construction machinery industry from Guangzhou, China, with a focus on quality and speed.

  We supply hydraulic pumps, gear pumps, relief valves, throttle motors, sensors, solenoid valves, regulators, wiring harnesses, and engine parts. Our products are compatible with Komatsu,  Kobelco, Hitachi, Hyundai, Doosan, Sany, XCMG, JCB, and Case. With over 1,000 part numbers in stock, we can meet both common and urgent needs.

  Quality is our starting point. Raw materials are inspected before production, and finished products must pass performance and durability tests. We also help customers confirm models, avoid wrong purchases, and ship common parts fast. No matter the order size, we treat everyone the same. Our products are exported to more than 30 countries and regions.

  GVO — Precision Components. Global Supply. Trusted Partnership.