SUN HYDRAULICS
RPCCLNV

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics RPCCLNV (RPCCLNV) is a pilot-operated, balanced-piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when inlet pressure reaches the set threshold, throttling flow to maintain consistent pressure levels. Known for its accuracy and low-pressure rise versus flow, it operates smoothly and quietly with a typical response time of 10 milliseconds. The RPCCLNV is interchangeable with other two-port relief cartridges of the same frame size and can handle maximum pressure at port 2, making it suitable for cross-port relief circuits, although spool leakage should be considered in such applications. This model has a minimum setting of 75 psi (5 bar) across all spring ranges but is not recommended for load-holding applications due to potential spool leakage. Any back pressure at port 2 directly adds to the valve setting at a 1:1 ratio. The main stage orifice is safeguarded against contamination, ensuring reliable operation. The cartridge features Sun's floating style construction, which reduces the risk of internal parts binding from excessive installation torque or machining variances. With a capacity of 12 gpm (45 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve provides robust performance in demanding environments. It requires an installation torque between 20-25 lbf ft (27-33 Nm) and features an adjustment screw with an internal hex size of 5/32 inches (4 mm). The seal kit available for this model includes Viton seals, suitable for systems using phosphate ester fluids but not compatible with petroleum-based substances. The RPCCLNV weighs approximately .20 lb (.10 kg), highlighting its compact design suitable for various hydraulic applications where efficient pressure regulation is essential.