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The SUN PVHA-LAN, PVHA-LBN, PVHA-LDN, PVHA-LEN, PVHA-LWN are high-performance pilot operated pressure relief valves engineered by Sun Hydraulics. Designed for precision pressure regulation and overpressure protection in hydraulic systems, these cartridge-style valves deliver exceptional reliability, low hysteresis, and consistent performance across industrial, mobile, and marine applications.
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Ideal for systems requiring remote pressure adjustment and stable pressure control, the PVHA series excels in high-pressure environments, making it a top choice for hydraulic engineers and system integrators.
Pilot-Operated Design
Unlike direct-acting relief valves, the PVHA series uses a pilot valve to control the main valve piston, enabling accurate pressure regulation with minimal pressure drift. This design ensures flat pressure-flow curves, even under varying flow conditions.
Model-Specific Optimizations
PVHA-LAN: Tuned for low-pressure applications with rapid response, perfect for light-duty hydraulic circuits.
PVHA-LBN: Balanced piston structure for medium-pressure systems, reducing pressure fluctuations during load changes.
PVHA-LDN: High-pressure rating up to 5000 psi, built to withstand harsh industrial operating conditions.
PVHA-LEN: Enhanced low hysteresis performance, ideal for precision hydraulic control systems that demand tight pressure tolerances.
PVHA-LWN: Externally drained pilot configuration, preventing backpressure interference and ensuring stable operation in complex hydraulic setups.
Cartridge Installation
All PVHA series valves fit the standard T-23A cavity, allowing for easy drop-in installation and replacement without modifying existing hydraulic manifold designs. This feature cuts down on maintenance time and system downtime.
Remote Control Capability
The pilot port enables remote pressure adjustment, giving operators the flexibility to set system pressure from a safe distance or integrate with automated control systems.
Durable Construction
Manufactured with high-grade materials, these valves resist wear, corrosion, and fatigue, ensuring long service life even in high-cycle hydraulic applications.
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The SUN PVHA series pilot operated pressure relief valves are widely used in:
Construction Machinery: Excavators, loaders, and cranes for hydraulic circuit overpressure protection.
Industrial Hydraulics: Injection molding machines, metal forming equipment, and hydraulic presses for precision pressure control.
Marine Systems: Shipboard hydraulic steering, winch, and anchor systems, withstanding saltwater corrosion and vibration.
Oil & Gas Equipment: Wellhead control panels and pipeline hydraulic systems, ensuring safe operation under high-pressure conditions.
Proven Reliability: Sun Hydraulics’ decades of expertise in hydraulic component manufacturing ensures consistent quality.
Easy Integration: Drop-in cartridge design fits standard cavities, reducing installation complexity.
Precision Performance: Low hysteresis and stable pressure control optimize hydraulic system efficiency and reduce energy waste.
Model Versatility: The PVHA-LAN/LBN/LDN/LEN/LWN lineup covers a full range of pressure and performance needs, eliminating the need for multiple valve types.
