SUN HYDRAULICS
RVIBKDN

***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 RVIBKDN (RVIBKDN) is a versatile three-port normally closed modulating element with relief functionality, designed to provide dual operations when used with an external orifice. This component acts as a bypass compensator, regulating priority flow into the system via the external orifice while redirecting any excess flow to tank port 2. In scenarios where the pressure at inlet port 1 surpasses the valve's preset level, it functions as a standard relief valve. The valve boasts a compensating pressure of 90 psi (6 bar) across all ranges, with performance curves illustrating system pressure on the X-axis and pressure differential on the Y-axis. The curves are indicative of various bypass flows, which essentially determine the valve's capacity and performance since control flow does not influence these parameters. Cartridges equipped with EPDM seals in this model are specifically intended for systems using phosphate ester fluids, as exposure to petroleum-based substances can harm the seals. The RVIBKDN fits into a T-19A cavity from Series 4 and has a capacity of up to 80 gpm (320 L/min). It operates under a maximum pressure of 5000 psi (350 bar) and exhibits typical response times around 10 ms. Valve leakage is minimal at specified conditions, ensuring efficient operation. Adjustment settings require up to five clockwise turns to increase pressure settings, with specific torque values provided for installation and adjustment components. The unit weighs approximately 3.10 lb (1.40 kg), and Viton seal kits are available for maintenance needs.