SUN HYDRAULICS
RQCBCAV

***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 RQCBCAV (Material Number: RQCBCAV) is a kickdown relief cartridge designed to function similarly to a circuit breaker in hydraulic systems. When the pressure at inlet port 1 surpasses the valve setting, the valve opens completely, allowing unrestricted flow from port 1 to tank port 2. It remains open as long as the pressure at port 1 exceeds that at port 2 and resets only when the flow ceases, with pressure at port 2 equal to or greater than at port 1. This valve is not intended for load-holding applications and is best used on the actuator side of a system since it requires cessation of flow for resetting. If applied on the pump side, pump flow must be stopped to reset it. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. The valve features Sun's floating style construction, minimizing internal part binding due to excessive installation torque or machining variations. With a capacity of 12 gpm (45 L/min), it can handle a maximum operating pressure of 5000 psi (350 bar) and exhibits a typical response time of 25 ms. The design incorporates physically and functionally interchangeable components with other two-port relief cartridges except pilot reliefs. Additional specifications include an adjustment range with five clockwise turns required to increase settings and a maximum valve leakage rate of 2 in\u00b3/min (30 cc/min) at 1000 psi (70 bar). The valve's hex size is .34 inches (19.1 mm), with an installation torque range of 20-25 lbf-ft (27-33 Nm). The locknut hex size measures .916 inches (15 mm) with a torque specification of 80-90 lbf-in (9-10 Nm). Weighing .20 lb (.10 kg), this cartridge is constructed for robustness in demanding environments, providing reliable performance in various applications such as portable grain augers for silos.