SUN HYDRAULICS
RVBALWV

***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 RVBALWV (Material Number: RVBALWV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This normally closed valve begins to open to tank port 2 when the inlet port 1 pressure reaches the valve's set point, effectively throttling flow to maintain desired pressure levels. It features a vent port (port 3) that allows for remote control by other pilot or two-way valves, enhancing its versatility in various hydraulic systems. Known for its accuracy and smooth operation with low pressure rise versus flow, this valve is also moderately fast and operates quietly. The RVBALWV model can accept maximum pressure at port 2, making it suitable for use in 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 recommended for load-holding applications due to potential leakage. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The main stage orifice is protected against contamination and incorporates Sun's floating style construction, reducing the risk of internal parts binding from excessive installation torque or machining variations. This cartridge fits into cavity T-163A and offers a capacity of up to 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), with a typical response time of about 10 ms. Maximum valve leakage at 110 SUS (24 cSt) is specified as 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). The adjustment requires approximately five clockwise turns to increase the setting, with specific torque values provided for installation and adjustment components.