SUN HYDRAULICS
RVBAKWV

***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 RVBAKWV (RVBAKWV) 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 set threshold, throttling flow to maintain desired pressure levels. It features a vent port (port 3) that allows remote control via other pilot or 2-way valves, making it versatile for various applications. The RVBAKWV is known for its accuracy, low pressure rise versus flow, smooth operation, quiet performance, and moderate response speed. It can accept maximum pressure at port 2 and is suitable for cross-port relief circuits; however, spool leakage should be considered in such configurations. The valve's minimum setting is 75 psi (5 bar) across all spring ranges and is not recommended for load-holding applications due to potential leakage. Backpressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. The main stage orifice is protected against contamination, and the design incorporates Sun's floating style construction to prevent internal binding from installation torque or machining variations. The RVBAKWV fits into cavity T-163A with a series 0 capacity of up to 7.5 gpm (30 L/min). Factory pressure settings are established at a flow rate of 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 7-10 in\u00b3/min (0.11-0.16 L/min), with typical response times around 10 ms. Maximum valve leakage at 110 SUS (24 cSt) is measured at 2 in\u00b3/min under conditions of up to 1000 psi (70 bar). The adjustment mechanism allows for up to five clockwise turns to increase the setting, with specific hex sizes and torque values provided for installation and adjustment components. The model weighs approximately .30 lb (.15 kg) and comes with an optional Viton seal kit under part number 990163006.