SUN HYDRAULICS
RVBAKNV

***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 RVBAKNV (RVBAKNV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches the set point, thereby throttling flow to maintain desired pressure levels. The valve features a vent port (port 3) that facilitates remote control via other pilot or two-way valves, ensuring low pressure rise versus flow and smooth operation. It is suitable for cross-port relief circuits, accepting maximum pressure at port 2; however, users should consider spool leakage in these applications. The minimum setting for all spring ranges is 75 psi (5 bar), and it is not recommended for load-holding applications due to potential spool leakage. The RVBAKNV model supports a maximum operating pressure of 5000 psi (350 bar) and offers a capacity of up to 7.5 gpm (30 L/min). The factory pressure settings are established at 4 gpm (15 L/min), with response times typically around 10 ms. The valve's design incorporates Sun's floating style construction, which minimizes risks of internal part binding from excessive installation torque or machining variations. Backpressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. Additional specifications include a control pilot flow of 7-10 in\u00b3/min (0.11-0.16 L/min), maximum valve leakage at specified conditions of up to 2 in\u00b3/min (30 cc/min), and adjustable settings with up to five clockwise turns needed to increase the setting. Installation requires specific torque values, with an internal hex size adjustment screw of 5/32 in (4 mm) and locknut torque between 80-90 lbf-in (9-10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seal kits for reliable performance across various applications.