SUN HYDRAULICS
RVBAKNN

***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 RVBAKNN (RVBAKNN) is a ventable, pilot-operated, balanced piston relief cartridge designed for efficient pressure regulation in hydraulic systems. This valve is normally closed and starts to open to tank port 2 when the inlet port 1 pressure reaches the set threshold, thereby throttling flow to maintain desired pressure levels. It features a vent port (port 3) that allows remote control by other pilot or two-way valves. Known for its accuracy, low-pressure rise versus flow, smooth operation, and moderate speed, this valve is suitable for cross-port relief circuits but not recommended for load-holding applications due to spool leakage. It can handle maximum pressure at port 2 and has a minimum setting of 75 psi (5 bar) across all spring ranges. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. Designed with Sun's floating style construction, it minimizes internal binding risks due to installation torque or machining variations. The valve fits into a T-163A cavity and supports a capacity of up to 7.5 gpm (30 L/min), with factory pressure settings established at 4 gpm (15 L/min). It operates under a maximum pressure of 5000 psi (350 bar), with control pilot flow ranging from 7 to 10 in\u00b3/min (0.11 to 0.16 L/min). Typical response time is around 10 ms, and maximum leakage at 110 SUS (24 cSt) is limited to 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). The product includes adjustment features such as an internal hex adjustment screw and locknut with specific torque requirements. The model weighs approximately .30 lb (.15 kg) and includes Viton seal kits for reliable performance in various applications.