SUN HYDRAULICS
RVEAKRN

***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 RVEAKRN (RVEAKRN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve begins to open when the inlet port pressure reaches the preset level, diverting flow to the tank port to maintain desired pressure levels. It features a vent port that allows for remote control by external pilot or two-way valves, enhancing its versatility in various applications. Known for its accuracy and low-pressure rise relative to flow, this valve operates smoothly and quietly with moderate speed. A key feature of the RVEAKRN is its ability to be controlled below its setting using a remote pilot relief on the vent port. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen, but it is not recommended for load-holding applications due to potential spool leakage. The cartridge incorporates Sun's floating style construction to reduce binding risks from excessive torque or machining variations. It has a capacity of 30 gpm (120 L/min) with a maximum operating pressure of 5000 psi (350 bar). The response time is typically around 10 ms, and it exhibits minimal valve leakage under specified conditions. Adjustments are made via an internal hex screw and locknut setup. For systems using phosphate ester fluids, cartridges with EPDM seals are available; however, these seals are incompatible with petroleum-based substances. The RVEAKRN model weighs approximately 0.70 lb (0.30 kg) and requires specific installation torques for optimal performance and longevity in demanding hydraulic environments.