SUN HYDRAULICS
SQFBJDN

***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 SQFBJDN (SQFBJDN) is a kickdown sequence valve designed to fully open and maintain an unrestricted flow path from port 1 to port 2 once the inlet pressure at port 1 surpasses the valve setting. This ensures efficient flow management in hydraulic systems, as it remains open until the pressure at port 1 drops below the valve setting, ceasing flow between ports. The valve is physically and functionally interchangeable with other three-port sequence cartridges of the same frame size, but it is not recommended for load-holding applications. It features a main stage orifice protected by a 150-micron stainless steel screen and can handle pressures up to 5000 psi (350 bar) at port 3. The Sun floating style construction minimizes internal binding risks, making it reliable under varying installation conditions. This valve is particularly suited for use on the actuator side of hydraulic systems, requiring cessation of flow for resetting. If applied on the pump side, pump flow must be stopped for reset functionality. The SQFBJDN offers a capacity of 30 gpm (120 L/min) with a typical response time of 25 ms and minimal leakage at maximum operating conditions. Installation requires specific torque settings and adjustments can be made via an internal hex screw to increase pressure settings as needed. With its robust design and precise control capabilities, this sequence valve is an essential component for managing complex hydraulic operations where controlled sequencing is critical.