SUN HYDRAULICS
RVIBLDN

***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 RVIBLDN (Material Number: RVIBLDN) is a three-port, normally closed modulating element with relief that performs dual functions when paired with an external orifice. This valve acts as a bypass compensator, controlling priority flow into a circuit as dictated by the external orifice, while excess input flow is directed to the tank port 2. When inlet port 1 pressure reaches the valve's set point, it functions as a standard relief valve. The compensating pressure across all ranges is 90 psi (6 bar), and its performance curve illustrates system pressure against the pressure differential created across the control orifice. The valve's capacity and functionality are determined by bypass flow, independent of control flow. Configured with EPDM seals, this cartridge is suitable for systems using phosphate ester fluids but should not be exposed to petroleum-based fluids or greases to avoid seal damage. It fits into Cavity T-19A Series 4 and has a capacity of up to 80 gpm (320 L/min). The maximum operating pressure is 5000 psi (350 bar), with a typical response time of 10 ms and maximum leakage at 110 SUS (24 cSt) of 5 in\u00b3/min at 1000 psi (80 cc/min at 70 bar). Valve adjustment involves up to five clockwise turns to increase settings, requiring specific torque values for installation and locknut adjustments. The model weighs approximately 3.10 lb (1.40 kg), and Viton seal kits are available under part number 990019006 for maintenance needs.