SUN HYDRAULICS
RPEEODN

***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 RPEEODN (RPEEODN) 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 to tank port 2 when the inlet port 1 reaches the valve setting, effectively throttling flow to limit pressure rise. Known for its rapid response time of approximately 2 milliseconds, this valve is suitable for applications requiring maximum pressure at port 2 and can be used in cross-port relief circuits, though spool leakage should be considered. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring reliability under various conditions. However, it is not recommended for load-holding applications due to potential spool leakage. The RPEEODN model incorporates Sun's floating style construction to prevent internal binding from excessive installation torque or machining variations. With a capacity of 25 gpm (95 L/min) and a maximum operating pressure of 5000 psi (350 bar), this valve features an adjustable range via W or Y controls, with settings determined at 4 gpm (15 L/min). The design includes interchangeable components across similar frame sizes, enhancing its versatility in hydraulic systems. Installation specifics include a valve hex size of 7/8 inch (22.2 mm) and installation torque between 30 and 35 lbf-ft (41 to 47 Nm). The adjustment screw has an internal hex size of 5/32 inch (4 mm), with a locknut hex size of 9/16 inch (15 mm) requiring torque between 80 and 90 lbf-in (9 to 10 Nm). Weighing just .30 lb (.15 kg), the RPEEODN comes equipped with Viton seals for optimal performance in demanding environments.