SUN HYDRAULICS
RVBAKCN

***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 RVBAKCN (Material Number: RVBAKCN) is a ventable, pilot-operated, balanced piston relief cartridge designed for pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches the set valve limit, allowing flow throttling to maintain regulated pressure. It features a vent port 3 for remote control via pilot or 2-way valves. The RVBAKCN model is known for its accuracy, low pressure rise against flow, smooth operation, and moderate speed. It allows maximum pressure at port 2 and is suitable for cross-port relief circuits; however, users should consider spool leakage in such applications. The minimum setting for all spring ranges is 75 psi (5 bar), but it is not suitable for load-holding applications due to potential spool leakage. Back pressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. The main stage orifice is contamination-protected, and the Sun floating style construction minimizes binding risks from excessive torque or machining variations. This cartridge fits into a T-163A cavity with a series 0 capacity of up to 7.5 gpm (30 L/min) and withstands maximum operating pressures of up to 5000 psi (350 bar). The control pilot flow ranges from 7-10 in\u00b3/min (0.11-0.16 L/min), with a typical response time of approximately 10 ms. Maximum valve leakage at viscosity levels of 110 SUS (24 cSt) is limited to about 2 in\u00b3/min at pressures of up to 1000 psi (30 cc/min at 70 bar). The adjustment mechanism allows up to five clockwise turns to increase settings, with specific torque requirements detailed for installation and locknut adjustments. This model weighs approximately .30 lb (.15 kg) and uses Viton seals available under seal kit number: 990163006.