SUN HYDRAULICS
RVIBLCV

***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 RVIBLCV (RVIBLCV) is a versatile three-port normally closed modulating element with relief capabilities, designed to perform dual functions when used with an external orifice. It acts as a bypass compensator, controlling priority flow within a circuit while redirecting any excess input flow to tank port 2. Additionally, when the inlet port 1 pressure surpasses the valve setting, it functions as a standard relief valve. The compensating pressure for all ranges is set at 90 psi (6 bar). The valve's performance curve illustrates the relationship between system pressure and the pressure differential across the control orifice, with various curves representing different bypass flows. Notably, the valve's capacity and performance are determined by bypass flow rather than control flow. The RVIBLCV model is equipped with EPDM seals, making it suitable for systems using phosphate ester fluids; however, these seals can be damaged by petroleum-based fluids, greases, and lubricants. The cartridge fits into a T-19A cavity and belongs to Series 4 with a capacity of 80 gpm (320 L/min). It operates under a maximum pressure of 5000 psi (350 bar) and offers a typical response time of 10 ms. Valve leakage at 110 SUS (24 cSt) is minimal at 5 in\u00b3/min (80 cc/min) under 1000 psi (70 bar). Installation requires specific torque settings: valve installation torque ranges from 350 to 375 lbf\u00b7ft (474 to 508 Nm), while the locknut torque is between 80 to 90 lbf\u00b7in (9 to 10 Nm). The adjustment screw features an internal hex size of ^5/32 in. (4 mm), with up to five clockwise turns needed to increase the setting. The unit weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits identified by part number 990019006 for maintenance or replacement needs.