SUN HYDRAULICS
RPCCCWN

***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 RPCCCWN (Material Number: RPCCCWN) is a pilot-operated, balanced-piston relief cartridge designed as a normally closed pressure-regulating valve. When the inlet port pressure reaches the set value, it opens to the tank port, regulating flow and maintaining pressure. This model is known for its accuracy, low-pressure rise versus flow, smooth operation, quiet performance, and moderate speed. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The minimum setting for all spring ranges is 75 psi (5 bar), but it is not recommended for load-holding applications due to potential leakage. The back pressure at the tank port directly adds to the valve setting at a 1:1 ratio. The main stage orifice is protected against contamination, and cartridges with EPDM seals are compatible with phosphate ester fluids but not petroleum-based substances. This design incorporates Sun's floating style construction to prevent internal binding from installation torque or machining variations. The RPCCCWN fits into a T-162A cavity and has a series 0 capacity of 12 gpm (45 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Typical response time is approximately 10 ms, with maximum valve leakage at 110 SUS being 2 in\u00b3/min (30 cc/min) under specified conditions. Adjustment involves up to five clockwise turns to increase settings. Installation requires specific torques for both the valve and locknut components, ensuring secure placement without compromising functionality. This model weighs approximately .20 lb (.10 kg) and includes options for Viton seal kits.