Vickers RV8 RV1 Series Relief Valve | RV8-8-S-0-50 | RV1-8-C-0-50

LIC Hydraulic proudly offers the Vickers RV Series, the industry-standard for compact, reliable plug-in relief valves. These threaded cartridge valves, including the popular RV1-8 and RV8-8 series, are designed for direct installation into hydraulic manifolds. They serve as the critical “last line of defense” for your hydraulic system, providing precise overpressure protection. Models like RV8-8-S-0-50 are engineered to handle high-pressure duty cycles with minimal hysteresis, ensuring your pumps and actuators are shielded from damaging pressure spikes.

Technical Specifications (Quick Reference)

• Series: RV1 / RV8 Cartridge Type.

• Cavity Size: Standard C-8-2 ($3/4\text{–}16\text{ UNF}$ Thread).

• Pressure Adjustment Ranges: 15 ($7\text{–}100\text{ bar}$), 30 ($17\text{–}210\text{ bar}$), 50 ($35\text{–}350\text{ bar}$).

• Adjustment Options: S (Internal Screw), C (Capped), K (Knob).

• Max Flow: Up to $30\text{ L/min}$ (depending on the model and differential pressure).

Key Technical Advantages

• High Repeatability: Precision-ground seats and hardened poppets ensure that the valve cracks and fully reseats at the exact specified pressure every time.

• Space-Saving Manifold Integration: The plug-in design eliminates external piping, reducing potential leak points and significantly shrinking the footprint of the hydraulic power unit.

• Rugged Construction: Built to survive the harsh vibrations of mobile machinery and the high-cycle fatigue of industrial manufacturing.

• Corrosion Resistance: Most models feature zinc-plated external surfaces to withstand moisture and salt spray in outdoor environments.

Application Areas

• Mobile Power: Main relief for compact tractors, skid steers, and mini-excavators.

• Material Handling: Pressure limiting for forklift lift and tilt circuits.

• Industrial HPUs: Auxiliary pressure control for clamping, stamping, and automated assembly lines.

• Custom Manifolds: Specialized directional and pressure control blocks for factory automation.

Expert Maintenance Tips

• Verify Adjustment Range: Never attempt to adjust a -15 range valve to achieve $300\text{ bar}$. Forcing the spring beyond its design limits will lead to spring fatigue or total valve failure.

• Seal Inspection: When replacing a valve, always inspect the O-rings and backup rings on the cartridge. A nicked seal during installation is the #1 cause of “mysterious” pressure loss in manifolds.

• Contamination Awareness: Piston-style relief valves are sensitive to silting. Regular oil analysis and maintaining a filtration level of ISO 4406 18/16/13 are essential for preventing the valve from sticking in an open or closed position.

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