SUN HYDRAULICS
RPCCCCV

***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 RPCCCCV (Material Number: RPCCCCV) is a pilot-operated, balanced-piston relief cartridge designed as a pressure regulating valve. This valve remains normally closed until the inlet pressure at port 1 reaches the pre-set level, at which point it opens to tank port 2 to manage the flow and maintain regulated pressure. Notably accurate with low pressure rise relative to flow, this valve operates smoothly and quietly with moderate speed. The RPCCCCV can handle maximum pressure at port 2, making it suitable for cross-port relief circuits, though spool leakage should be considered in such applications. It has a minimum setting of 75 psi (5 bar) across all spring ranges but is not recommended for load-holding applications due to potential leakage. Back pressure on tank port 2 directly adds to the valve setting in a 1:1 ratio. The main stage orifice is safeguarded against contamination, and EPDM-sealed cartridges are intended for systems using phosphate ester fluids only\u2014contact with petroleum-based products can damage these seals. The Sun floating style construction minimizes internal binding risks from excessive torque or machining variations. The cartridge fits into a T-162A cavity, supporting a series 0 capacity of up to 12 gpm (45 L/min). It operates under a maximum pressure of 5000 psi (350 bar), with typical response times around 10 ms and minimal leakage rates of up to 2 in\u00b3/min at 110 SUS (24 cSt) viscosity. Adjustments require up to five clockwise turns, with specific torque settings for installation and locknut adjustments provided for optimal performance.