SUN HYDRAULICS
RVEDKWV

***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 RVEDKWV (RVEDKWV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches the predetermined setting, effectively throttling flow to maintain the desired pressure level. It features a vent port 3 for remote control via other pilot or two-way valves and a drain port 4 that prevents sensitivity to back pressure. Known for its accuracy and smooth operation, this valve offers low pressure rise versus flow and moderate response speed. The RVEDKWV can handle maximum pressures at port 2, making it suitable for cross-port relief circuits; however, users should consider spool leakage in such applications. Its main stage orifice is safeguarded by a robust 150-micron stainless steel screen. The valve is not recommended for load-holding applications due to potential spool leakage. Pressure at port 4 directly adds to the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). This model incorporates Sun's floating style construction to reduce internal binding risks from excessive installation torque or machining variations. It supports EPDM seals for compatibility with phosphate ester fluids but warns against exposure to petroleum-based substances as they can damage seals. Additional specifications include a cavity T-22A series 2 design with a capacity of up to 30 gpm (120 L/min), factory-set pressures established at 4 gpm (15 L/min), and maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 10-15 cu-in/min (0.16-0.25 L/min) with typical response times around 10 ms. Maximum valve leakage is rated at approximately 3 cu-in/min at specific conditions, while adjustment is facilitated through an internal hex screw with specific torque requirements.