SUN HYDRAULICS
RPGEOSV

***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 RPGEOSV (RPGEOSV) is a fast-acting, pilot-operated, balanced piston relief cartridge designed for hydraulic systems requiring rapid response to pressure transients. This normally closed valve functions as a pressure-limiting device, opening swiftly when inlet port pressure reaches the set threshold to throttle flow to tank port 2, thereby limiting further pressure increase. The cartridge excels in applications where quick opening and closing are prioritized over smooth operation. It features low pressure rise relative to flow and an impressive response time of approximately 2 milliseconds. The RPGEOSV is physically and functionally interchangeable with other 2-port relief cartridges of the same frame size, sharing identical flow paths and cavity dimensions. This model is suitable for cross-port relief circuits, though users should account for potential spool leakage in such applications. Its main stage orifice is safeguarded by a 150-micron stainless steel screen, enhancing durability. However, due to spool leakage, it is not recommended for load-holding uses. Notably, back pressure at tank port 2 directly adds to the valve setting at a 1:1 ratio. The cartridge incorporates Sun\u2019s floating style construction to reduce risks of internal binding from excessive installation torque or machining variations. It accommodates EPDM seals for systems utilizing phosphate ester fluids but warns against exposure to petroleum-based substances which could damage these seals. Key specifications include a capacity of 50 gpm (200 L/min), maximum operating pressure of 5000 psi (350 bar), and minimal valve leakage under specified conditions. Additionally, it features adjustable settings via an internal hex screw and locknut with specified torque values for secure installation and adjustment precision.