XO-Z0174 Pilot-Operated Dual Check Valve |Double Locking, Zero-Leakage Pressure Holding
A pilot-operated dual check valve (also known as double hydraulic lock valve) consists of two pilot-operated check valves. It locks both directions of the circuit when actuators (such as cylinders) stop working, preventing load movement caused by gravity or external forces and ensuring long-term stable pressure holding. With a poppet-type design, it features zero leakage and is an essential safety component in mobile and industrial hydraulic systems.
Features
🔒 Bidirectional Locking: Independently controlled dual check valves lock cylinders or motors in any position
🛡️ Zero-Leakage Holding: Poppet-type sealing structure ensures no leakage during long-term pressure holding
⚡ Pilot-Operated Control: Opens via pilot pressure — sensitive response, smooth control
📈 High Load Capacity: Up to 350 bar pressure rating, suitable for heavy-duty applications
🔄 Multiple Pilot Ratios: 1:1 / 3:1 / 4:1 / 10:1 options available for different load requirements
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Technical Specifications
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Operating Principle
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Typical Applications
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Selection Guide
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Product Outline Dimensions (in mm)
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Note
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