SUN HYDRAULICS
RVBAKQN

***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 RVBAKQN (RVBAKQN) is a ventable, pilot-operated, balanced piston relief cartridge designed as a normally closed pressure regulating valve. This valve starts to open to the tank port when the inlet pressure reaches the set level, allowing throttling flow to regulate pressure effectively. It features a vent port that facilitates remote control using other pilot or two-way valves, making it versatile for various applications. The RVBAKQN is known for its accuracy, smooth and quiet operation, and moderate speed. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The minimum setting for all spring ranges is 75 psi (5 bar), but it is not recommended for load-holding applications due to potential spool leakage. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. The main stage orifice is contamination-protected, and the Sun floating style construction minimizes internal part binding risks due to installation torque or machining variations. The RVBAKQN fits into a T-16A cavity with a series 0 capacity of 7.5 gpm (30 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 7 to 10 in\u00b3/min (0.11 to 0.16 L/min), and typical response time is around 10 ms. Maximum valve leakage at 110 SUS (24 cSt) is about 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). Adjustments can be made by turning clockwise up to five turns, with specific torque requirements for installation and locknut adjustments provided for secure fitting. The model weighs approximately .30 lb (.15 kg) and uses Viton seal kits under cartridge number 990163006.