SUN HYDRAULICS
RQCBLAV

***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 RQCBLAV (Material Number: RQCBLAV) is a kickdown relief cartridge designed to function similarly to a circuit breaker within hydraulic systems. This valve automatically opens and remains open once the pressure at inlet port 1 surpasses the set threshold, providing an unrestricted flow path to tank port 2. It stays open as long as the pressure at port 1 is higher than at port 2. To reset, flow from port 1 to port 2 must stop, and the pressure at port 2 must equal or exceed that at port 1. The valve features a main stage orifice shielded by a 150-micron stainless steel screen, ensuring durability and reliability in various applications. However, it is not suitable for load-holding applications and should be used on the actuator side of a system since flow cessation through the valve is necessary for resetting. This model supports a maximum operating pressure of 5000 psi (350 bar) with a capacity of up to 12 gpm (45 L/min). It incorporates Sun's floating style construction, which minimizes internal part binding due to excessive installation torque or machining variations. The valve exhibits a typical response time of approximately 25 milliseconds and maintains minimal leakage rates under specified conditions. Adjustments can be made via an internal hex adjustment screw with detailed specifications for torque settings provided for various components. The RQCBLAV is particularly applicable in scenarios where immediate pressure release is crucial, such as in agricultural equipment like portable grain augers. Its design allows it to act swiftly in emergency situations, providing safety mechanisms that prevent equipment damage or personal injury by releasing excess pressure effectively.