SUN HYDRAULICS
RPKEKBV

***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 RPKEKBV (RPKEKBV) 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 rapidly to tank port 2 when the inlet port 1 reaches the valve setting, effectively throttling flow to limit pressure rise. It features a low pressure rise versus flow and provides very fast response times, typically around 2 milliseconds. The valve is suitable for use in cross port relief circuits and can accept maximum pressure at port 2; however, users should consider spool leakage in such applications. It is not recommended for load holding applications due to potential spool leakage. The RPKEKBV incorporates Sun's floating style construction, minimizing the risk of internal parts binding due to excessive installation torque or machining variations. The main stage orifice is protected by a 150-micron stainless steel screen. With a capacity of 200 gpm (760 L/min), this valve operates at a maximum pressure of 5000 psi (350 bar). The factory pressure settings are established at 4 gpm (15 L/min), and the maximum valve leakage at 110 SUS (24 cSt) is specified as 5 in\u00b3/min (80 cc/min) at 1000 psi (70 bar). Installation requires specific torque settings: valve installation torque ranges from 350 to 375 lbf ft (474 to 508 Nm), and locknut torque ranges from 80 to 90 lbf in (9 to 10 Nm). The adjustment screw has an internal hex size of ^5/32 in. (4 mm), while the locknut hex size is ^9/16 in. (15 mm). This cartridge model weighs approximately 2.50 lb (1.15 kg) and comes with a Viton seal kit option under part number: 990018006.