SUN HYDRAULICS
RPEEKNN

***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 RPEEKNN (RPEEKNN) 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 upon reaching the inlet port's pressure setting, allowing flow to the tank port to limit any further pressure rise. It features a main stage orifice protected by a 150-micron stainless steel screen and can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. However, it is not recommended for load holding applications due to potential spool leakage. The valve's design allows back pressure on the tank port to directly add to the valve setting in a 1:1 ratio. The RPEEKNN model is interchangeable with other 2-port relief cartridges of the same frame size, ensuring compatibility and ease of installation. With a cavity type T-10A and a capacity of 25 gpm (95 L/min), this cartridge operates efficiently at pressures up to 5000 psi (350 bar) with a typical response time of just 2 milliseconds. It also incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations. The valve allows adjustment throughout its full range using W or Y controls unless specified otherwise for special settings. Installation requires specific torque settings for both the valve and locknut, ensuring secure and stable operation under varying conditions. Weighing only 0.30 lbs (0.15 kg), this compact yet robust component includes an internal hex adjustment screw and is compatible with Viton seal kits for reliable performance across different environments and applications.