SUN HYDRAULICS
RVIDKBV

***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 RVIDKBV (RVIDKBV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when inlet pressure reaches a specified setting, effectively throttling flow to maintain desired pressure levels. It features a vent port for remote control and an external drain port that mitigates sensitivity to back pressure. Notable for its accuracy and low-pressure rise versus flow characteristics, this valve operates smoothly and quietly with moderate speed. It is capable of accepting maximum pressure at port 2, making it suitable for cross port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen. However, this valve is not recommended for load-holding applications due to potential spool leakage. The pressure at the external drain port directly affects the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). Cartridges with EPDM seals are compatible with phosphate ester fluids but are vulnerable to damage from petroleum-based substances. The RVIDKBV incorporates Sun's floating style construction to prevent internal binding due to installation torque or machining variations in the cavity or cartridge. It fits into a T-24A cavity and supports a series 4 capacity of up to 120 gpm (480 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 10 ms. Valve leakage is minimal under standard conditions, and adjustment involves up to five clockwise turns to increase settings, using an internal hex screw for adjustments and securing with a locknut.