SUN HYDRAULICS
RVIBCBN

***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 RVIBCBN (RVIBCBN) is a three-port normally closed modulating element with relief capabilities, designed to provide dual functions when paired with an external orifice. This component acts as a bypass compensator, controlling priority flow into the circuit based on the external orifice's specifications. Any input flow exceeding the priority flow is redirected to tank port 2. Additionally, if the pressure at inlet port 1 exceeds the valve's setting, it operates as a standard relief valve. The compensating pressure for all ranges is set at 90 psi (6 bar). The performance curve illustrates that while system pressure is indicated on the X-axis, the Y-axis demonstrates the pressure differential created across the control orifice by this valve. Various curves represent different bypass flows, which are calculated by subtracting control flow from pump flow; thus, bypass flow determines capacity and performance rather than control flow. This model is equipped with EPDM seals suitable for systems using phosphate ester fluids; however, these seals are susceptible to damage from petroleum-based fluids, greases, and lubricants. The RVIBCBN fits into cavity T-19A and belongs to Series 4 with a capacity of 80 gpm (320 L/min). It can handle a maximum operating pressure of 5000 psi (350 bar) and typically responds within 10 milliseconds. Maximum valve leakage at 110 SUS (24 cSt) is rated at 5 in\u00b3/min (80 cc/min) under conditions of 1000 psi (70 bar). Adjustment settings are made through clockwise turns up to 5.5 times to increase settings. Installation requires a torque between 350 - 375 lbf ft (474 - 508 Nm), with additional specifications provided for various screw sizes and locknut torque requirements. The model weighs approximately 3.10 lb (1.40 kg), and Viton seal kits are available under part number 990019006.