SUN HYDRAULICS
RVCACCN

***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 RVCACCN (RVCACCN) 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 1 pressure reaches the set threshold, allowing flow to tank port 2 to maintain desired pressure levels. It features a vent port (port 3) that facilitates remote control via other pilot or two-way valves. Known for its accuracy and low pressure rise against flow, this valve operates smoothly and quietly with moderate speed. It accepts maximum pressure at port 2, making it suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen. The RVCACCN is not recommended for load-holding applications due to potential spool leakage. Any back pressure at tank port 2 directly adds to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are compatible with phosphate ester fluids but can be damaged by petroleum-based substances. The Sun floating style construction minimizes binding risks from excessive installation torque or cavity machining variations. Key specifications include a capacity of 15 gpm (60 L/min), a maximum operating pressure of 5000 psi (350 bar), and a typical response time of 10 ms. The valve's maximum leakage rate is 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). Adjustments are made using an internal hex screw, with specific torque settings for both the valve and locknut provided to ensure optimal performance and reliability in various hydraulic applications.