SUN HYDRAULICS
RVEALNN

***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 RVEALNN (RVEALNN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This valve remains normally closed and begins to open to the tank port when the inlet pressure reaches the preset level, effectively throttling flow to maintain desired pressure. It features a vent port that allows remote control through other pilot or two-way valves. Known for its accuracy and smooth operation, the RVEALNN provides low-pressure rise relative to flow and operates quietly with moderate speed. It's important to note that while it can accept maximum pressure at port 2 and is suitable for cross-port relief circuits, it should not be used in load-holding applications due to potential spool leakage. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and reliability. The valve's back pressure on the tank port directly affects the valve setting at a 1:1 ratio. Cartridges with EPDM seals are compatible with phosphate ester fluids but should not be exposed to petroleum-based substances as they can cause seal damage. The Sun floating style construction minimizes internal binding risks due to excessive installation torque or machining variations. Key specifications include a capacity of 30 gpm (120 L/min), a maximum operating pressure of 5000 psi (350 bar), and a typical response time of 10 ms. The valve's adjustment involves up to five clockwise turns to increase settings, with specific torque requirements for installation and locknut adjustments. Weighing approximately 0.70 lb (0.30 kg), this cartridge integrates seamlessly into hydraulic systems requiring reliable pressure control without compromising system performance or integrity.