SUN HYDRAULICS
RVIBKAV

***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 RVIBKAV (Material Number: RVIBKAV) is a three-port, normally closed modulating element with relief capabilities, designed to provide dual functions when paired with an external orifice. This hydraulic valve serves as a bypass compensator, controlling priority flow into the circuit as dictated by the external orifice, while any excess input flow is redirected to tank port 2. Additionally, if the pressure at inlet port 1 reaches the valve's set point, it functions as a standard relief valve. The compensating pressure for all ranges is maintained at 90 psi (6 bar). The performance curve illustrates that system pressure on the X-axis correlates with the pressure differential created by the valve across the control orifice on the Y-axis. Various curves represent different bypass flows, which determine the valve's capacity and performance; control flow does not influence these factors. This model accommodates cartridges configured with EPDM seals specifically for systems using phosphate ester fluids; contact with petroleum-based fluids can damage these seals. It features a T-19A cavity and Series 4 capacity of 80 gpm (320 L/min), with factory pressure settings established at 4 gpm (15 L/min). The maximum operating pressure is rated at 5000 psi (350 bar), and it boasts a typical response time of 10 ms. Maximum valve leakage at 110 SUS (24 cSt) is limited to 5 in\u00b3/min (80 cc/min) under conditions of 1000 psi (70 bar). Adjustment is achieved through clockwise turns to increase settings up to a maximum of five and a half turns. The installation torque ranges between 350 - 375 lbf ft (474 - 508 Nm), while adjustment screw internal hex size is set at ^5\u204432 in. (4 mm). The locknut hex size measures ^9\u204416 in. (15 mm) with torque requirements of 80 - 90 lbf in. (9 -10 Nm). This model weighs approximately 3.10 lb (1.40 kg), and Viton seal kits are available under part number: 990019006.