SUN HYDRAULICS
RVEALUE

***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 RVEALUE (RVEALUE) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This valve remains normally closed until the inlet pressure at port 1 reaches the pre-set level, at which point it opens to tank port 2 to throttle flow and maintain the desired pressure. It features a vent port 3 that allows for remote control via additional pilot or two-way valves. Known for its accuracy and smooth operation, the RVEALUE offers low pressure rise versus flow and operates quietly with moderate speed. This model can handle maximum pressures at port 2, making it suitable for cross-port relief circuits; however, users should consider spool leakage in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen, though it's not recommended for load-holding applications due to potential leakage. Additionally, back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, EPDM seal configurations are available but should not be exposed to petroleum-based products as they could cause damage. The RVEALUE incorporates Sun's floating style construction to prevent internal binding due to excessive installation torque or machining variations in cavity/cartridge interfaces. It has a capacity of 30 gpm (120 L/min) and can operate under pressures up to 5000 psi (350 bar). The factory pressure settings are established at a flow of 4 gpm (15 L/min), with control pilot flows ranging from 10-15 in\u00b3/min (0.16-0.25 L/min). The typical response time is approximately 10 ms, with maximum valve leakage of up to 3 in\u00b3/min (50 cc/min) at specified conditions. Installation requires specific torque settings and hex sizes for adjustments and locknut securing.