SUN HYDRAULICS
RPEEYAN

***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 RPEEYAN (RPEEYAN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens quickly when the inlet port pressure reaches the valve setting, redirecting flow to the tank port to control pressure rise. With a capacity of 25 gpm (95 L/min) and a maximum operating pressure of 5000 psi (350 bar), it is suitable for use in cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and performance reliability. However, it is not recommended for load-holding applications due to potential spool leakage. The valve's back pressure at tank port 2 directly affects the valve setting at a 1:1 ratio. This model features interchangeable design across all 2-port relief cartridges for consistent flow paths and cavity compatibility within the same frame size. Adjustment of the valve can be achieved using W or Y controls with or without special settings, providing flexibility across its full range. The Sun floating style construction minimizes internal binding risks due to excessive torque or machining variations during installation. The valve's response time is typically around 2 ms with minimal leakage at specified conditions. Installation specifications include a hex size of 7/8 inch (22.2 mm) and an installation torque range of 30-35 lbf ft (41-47 Nm). The RPEEYAN model weighs approximately .30 lb (.15 kg) and includes a Viton seal kit option for enhanced sealing performance under various conditions.