SUN HYDRAULICS
RELIEF CART
RVCAKBN

***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 RVCAKBN (RVCAKBN) is a ventable, pilot-operated, balanced piston relief cartridge designed as a normally closed pressure regulating valve. It operates by opening to the tank port when the inlet port pressure reaches the valve setting, thereby throttling flow to regulate pressure. This model features a vent port that allows for remote control by other pilot or 2-way valves, ensuring accurate performance with low pressure rise versus flow. The RVCAKBN is known for its smooth and quiet operation and moderate response speed. It accommodates maximum pressure at port 2, making it suitable for use in cross-port relief circuits; however, spool leakage should be considered in such applications. This cartridge is equipped with a main stage orifice protected by a 150-micron stainless steel screen and is not recommended for load-holding applications due to potential spool leakage. Back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, cartridges with EPDM seals are available; however, these seals are vulnerable to damage from petroleum-based fluids and greases. The RVCAKBN incorporates Sun's floating style construction to minimize internal binding due to excessive installation torque or cavity/cartridge machining variations. It has a capacity of 15 gpm (60 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 7 to 10 in\u00b3/min (0.11 to 0.16 L/min), with a typical response time of approximately 10 ms. The model's installation specifications include a valve hex size of 7/8 inch (22.2 mm) and an installation torque range of 30-35 lbf\u00b7ft (41-47 Nm). The adjustment screw internal hex size is 5/32 inch (4 mm), while the locknut hex size measures at 9/16 inch (15 mm) with an associated torque of 80-90 lbf\u00b7in (9-10 Nm).