SUN HYDRAULICS
RVEAKFN

***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 RVEAKFN (RVEAKFN) is a ventable, pilot-operated, balanced piston relief cartridge designed to function as a pressure-regulating valve. This cartridge is typically closed and begins to open to the tank port when the inlet port pressure reaches the pre-set level, effectively throttling flow to maintain desired pressure levels. It features a vent port that allows for remote control through other pilot or 2-way valves, offering high accuracy and low-pressure rise against flow. The valve is engineered for smooth and quiet operation with moderate response speed. This model is suitable for cross-port relief circuits as it can handle maximum pressure at port 2, although spool leakage should be considered in such applications. It includes a main stage orifice protected by a 150-micron stainless steel screen but is not recommended for load-holding applications due to potential spool leakage. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. Notably, cartridges with EPDM seals are compatible with phosphate ester fluids but will sustain damage if exposed to petroleum-based fluids. The RVEAKFN incorporates Sun\u2019s floating style construction, reducing the risk of internal binding from excessive installation torque or machining variations. It has a cavity type T-2A and Series 2 configuration with a capacity of up to 30 gpm (120 L/min). The factory pressure settings are established at 4 gpm (15 L/min), and it can withstand a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 10-15 in\u00b3/min (0.16-0.25 L/min), with typical response times around 10 ms. The maximum valve leakage at standard conditions measures approximately 3 in\u00b3/min (50 cc/min) at 1000 psi (70 bar). Its design also includes various adjustment features for precise control settings.