SUN HYDRAULICS
RPCCKAV

***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 RPCCKAV (RPCCKAV) 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 the inlet pressure reaches the set threshold, thus throttling flow to maintain consistent pressure levels. It excels in providing accuracy with minimal pressure rise versus flow, operating smoothly and quietly with moderate response speed. The RPCCKAV is interchangeable with other 2-port relief cartridges of similar frame size, sharing the same flow path and cavity dimensions. It can handle maximum pressures at port 2, making it suitable for cross-port relief circuits; however, users should consider potential spool leakage in such applications. The minimum adjustable setting for this valve is 75 psi (5 bar), but it is not recommended for load-holding scenarios due to leakage concerns. Back pressure at the tank port directly adds to the valve setting at a 1:1 ratio, and its main stage orifice is protected against contamination. Cartridges equipped with EPDM seals are intended for systems using phosphate ester fluids only; contact with petroleum-based substances can damage these seals. The valve's floating style construction minimizes internal binding risks from installation torque or machining variations. Key specifications include a cavity size of T-162A, series 0 capacity of 12 gpm (45 L/min), and a maximum operating pressure of 5000 psi (350 bar). Typical response time is approximately 10 ms, with maximum leakage rated at 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). Adjustment involves up to five clockwise turns to increase settings. Installation requires specific torque values for both the valve and locknut components.