SUN HYDRAULICS
RPKECDV

***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 RPKECDV (RPKECDV) 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 its setting, diverting flow to the tank port to limit pressure rise. It boasts a low pressure rise versus flow and operates with remarkable speed, though this comes at the expense of smoothness. The RPKECDV is interchangeable with other 2-port relief cartridges of the same frame size and flow path. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits; however, spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen, though it is not ideal for load-holding applications due to potential leakage. The valve's design includes Sun's floating style construction to prevent internal component binding from installation or machining variations. Key specifications include a cavity size of T-18A Series 4, a capacity of 200 gpm (760 L/min), and a factory pressure setting established at 4 gpm (15 L/min). It can withstand a maximum operating pressure of 5000 psi (350 bar) with typical response times around 2 ms. Maximum valve leakage is rated at 5 in\u00b3/min (80 cc/min) under specific conditions. Adjustments are made via an internal hex screw, with detailed torque settings provided for both the valve and locknut installations. Weighing in at approximately 2.50 lb (1.15 kg), this cartridge also features Viton seals for durability and compatibility in various applications.