SUN HYDRAULICS
RPGEQCV

***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 RPGEQCV (Material Number: RPGEQCV) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed valve limits pressure by opening to the tank port when the inlet pressure reaches the set value, providing rapid response times with minimal pressure rise versus flow. It is capable of accepting maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The valve features a main stage orifice protected by a 150-micron stainless steel screen and incorporates Sun's floating style construction to minimize binding due to installation torque or machining variations. This relief cartridge operates with a maximum capacity of 50 gpm (200 L/min) and can handle pressures up to 5000 psi (350 bar). Its typical response time is around 2 milliseconds, with maximum valve leakage specified at 3 in\u00b3/min (50 cc/min) at 1000 psi (70 bar). The design includes EPDM seals for systems using phosphate ester fluids; however, exposure to petroleum-based fluids can damage these seals. It has an adjustment range that can be modified with five clockwise turns of the adjustment screw, which features an internal hex size of 5/32 inches (4 mm). The locknut hex size is 9/16 inches (15 mm), requiring a torque of 80-90 lbf-in (9-10 Nm) for proper installation. Weighing approximately .50 lb (.25 kg), this cartridge offers reliable performance for applications requiring fast response times and precise pressure control. It is not recommended for load-holding applications due to potential spool leakage.