SUN HYDRAULICS
RVIDKBN

***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 RVIDKBN (RVIDKBN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed to function as a normally closed pressure regulating valve. It operates by opening to the tank port when the inlet port pressure reaches the set valve limit, effectively throttling flow to maintain pressure levels. This model features a vent port for remote control and a drain port that ensures insensitivity to back pressure. Known for its accuracy and smooth operation, it has low pressure rise versus flow and moderate speed. The valve is capable of handling maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. It includes a main stage orifice protected by a 150-micron stainless steel screen but is not recommended for load-holding applications due to potential leakage. The valve's setting is directly influenced by pressure at port 4, maintaining a 1:1 ratio with an allowable maximum of 5000 psi (350 bar). Cartridges equipped with EPDM seals are compatible with systems using phosphate ester fluids but are vulnerable to damage from petroleum-based substances. The design incorporates Sun's floating style construction to prevent internal part binding due to installation torque or machining variations. Additional specifications include a cavity size of T-24A, series 4 capacity of 120 gpm (480 L/min), and factory pressure settings established at 4 gpm (15 L/min). It operates under a maximum pressure of 5000 psi (350 bar) with control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min) and typical response time of 10 ms. The valve hex size is 1-5/8 inches (41.3 mm), requiring installation torque between 350-375 lbf ft (474-508 Nm).