SUN HYDRAULICS
RQCBKAV

***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 RQCBKAV (RQCBKAV) is a kickdown relief cartridge designed to function similarly to a circuit breaker in hydraulic systems. This valve kicks completely open and stays open when the inlet port 1 pressure exceeds the set threshold, allowing unrestricted flow from port 1 to tank port 2. The valve remains open as long as the pressure at port 1 is greater than at port 2, and it resets only when flow ceases and pressure at port 2 equals or exceeds that of port 1. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. This cartridge is not suitable for load-holding applications but is intended for use on the actuator side of systems, where flow cessation through the valve allows resetting. If utilized on the pump side, pump flow must be halted for reset functionality. Back pressure on tank port 2 directly adds to the valve setting at a one-to-one ratio, offering precise control in various applications like portable grain augers in agricultural settings. The design incorporates Sun's floating style construction, minimizing internal part binding due to installation torque or machining variations. With a cavity size of T-162A and a series capacity of 12 gpm (45 L/min), it operates effectively up to a maximum pressure of 5000 psi (350 bar). The response time averages around 25 ms with minimal leakage under specified conditions. The valve features adjustable settings with five clockwise turns required to increase setting, supported by specific torque requirements for both installation and adjustment components.