SUN HYDRAULICS
RVBBKWN

***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 RVBBKWN (Material Number: RVBBKWN) is a three-port normally closed modulating element with relief capabilities, designed to provide dual functionalities when paired with an external orifice. This component acts as a bypass compensator in the main stage, managing priority flow into a circuit as determined by the external orifice, while any surplus input flow is redirected to tank port 2. The valve also functions as a standard relief valve if the pressure at inlet port 1 exceeds the preset valve setting. The compensating pressure for all ranges is maintained at 50 psi (3.5 bar). The performance curve illustrates system pressure on the X-axis and the pressure differential across the control orifice on the Y-axis, with various curves representing different bypass flows. Notably, this valve's capacity and performance are dictated by bypass flow rather than control flow. The RVBBKWN model fits into cavity T-163A and belongs to Series 0, with a capacity of 5 gpm (20 L/min). It can withstand a maximum operating pressure of up to 5000 psi (350 bar) and has a typical response time of 10 ms. Valve leakage is minimal at 110 SUS (24 cSt), measuring approximately 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). Adjustments are made via clockwise turns to increase settings, requiring about five turns. The valve features a hex size of 3/4 inch (19.1 mm) and an installation torque range of 20\u201325 lbf-ft (27\u201333 Nm). Additionally, it includes an internal hex size adjustment screw of 5/32 inch (4 mm), a locknut hex size of 9/16 inch (15 mm), and requires locknut torque between 80\u201390 lbf-in (9\u201310 Nm). The model weighs approximately .30 lb (.15 kg) and utilizes Viton seal kits for optimal performance.