SUN HYDRAULICS
RQCBLCV

***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 RQCBLCV (Material Number: RQCBLCV) is a kickdown relief cartridge designed to function similarly to a circuit breaker in hydraulic systems. This valve opens fully and remains open once the pressure at inlet port 1 surpasses the preset threshold, enabling unrestricted flow from port 1 to tank port 2. It stays open as long as the pressure at port 1 exceeds that at port 2. To reset, flow between these ports must stop, and the pressure at port 2 needs to be equal to or greater than that at port 1. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring reliability in operation. While this cartridge is not suitable for load-holding applications, it is intended for use on the actuator side of systems due to its reset requirements. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. All two-port relief cartridges from Sun Hydraulics are interchangeable within a given frame size, maintaining consistent flow paths and cavity dimensions. This model features Sun's floating style construction, reducing risks of internal part binding due to installation torque or machining variations. The RQCBLCV has a capacity of 12 gpm (45 L/min) and operates up to a maximum pressure of 5000 psi (350 bar). It offers typical response times of around 25 ms with minimal leakage under specified conditions. Adjustments can be made with up to five clockwise turns, with specific torque requirements for installation and adjustment components provided for optimal performance and maintenance.