GVO 702-21-57500 Hydraulic Pump Large Pump Proportional Solenoid Valve for

Product Specification

GVO 702-21-57500 Hydraulic Pump Large Pump Proportional Solenoid Valve for Excavators

 Key attributes

  These solenoid valves serve as the critical link between the machine's electronic control system and its hydraulic power. By converting electrical signals into precise hydraulic pilot pressure, they enable:

Smooth, responsive machine movements – Operators experience consistent, predictable control across all functions.

Enhanced fuel efficiency – The valve helps match pump output to actual load demands, reducing unnecessary energy waste.

Extended component life – By preventing pressure spikes and optimizing hydraulic flow, the valve protects the main pump and other expensive components from premature wear.

Reliable operation in harsh conditions – Designed for heavy-duty use, these valves maintain consistent performance despite vibration, temperature fluctuations, and exposure to dust and moisture.

If you need other relief valves, send us the related details please:

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GVO Company Overview  

  Guangzhou GVO Precision Hydraulic is a professional manufacturer and exporter specializing in the research, development, and production of high-quality hydraulic components and electrical systems for excavators. Based in Guangzhou, China, we are committed to delivering products that meet the highest standards of quality, reliability, and performance for the global construction machinery industry.

  We manufacture and supply hydraulic pumps, gear pumps, pressure relief valves, throttle motors, and a complete range of electrical components. Our product lineup covers most mainstream excavator brands and models, with full specifications and substantial inventory to ensure fast and accurate order fulfilment.

  All components are precision-machined using advanced manufacturing technologies and inspected under strict quality control protocols at every stage of production. Our products are characterized by high precision, excellent pressure resistance, superior sealing performance, and stable operation — effectively resolving common mechanical failures such as power deficiency, hydraulic leakage, system jitter, and electrical malfunctions.

  As a direct factory supplier, we eliminate intermediaries and provide high-quality replacement parts with reliable compatibility, consistent durability, and competitive pricing, ensuring exceptional value to our customers.

  With mature production systems, comprehensive export capabilities, and a commitment to product quality, we support bulk orders, customized processing, and efficient global delivery. Through stable product quality and professional after-sales support, we have established long-term, trusted partnerships with customers worldwide.

Operational Capabilities

  We maintain a comprehensive supply chain covering engine, hydraulic, electrical, sealing, bearing, and gear components for all major excavator brands. Our 40,000 m³ warehousing facility ensures extensive stock availability, enabling same-day dispatch and rapid order fulfilment.

Our team

GVO — Product Quality. Global Reliability. Trusted Partnership.