SUN HYDRAULICS
SQFBJCN

***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 SQFBJCN (SQFBJCN) is a versatile kickdown sequence valve designed to manage fluid flow in hydraulic systems efficiently. This valve kicks completely open and remains open when the pressure at inlet port 1 exceeds the preset valve setting, allowing unrestricted flow from port 1 to port 2. The valve's operation is dependent on the pressure differential between ports, specifically requiring that the pressure at port 1 remains higher than that at port 2 to stay open. To reset the valve, the pressure at port 1 must drop below its set point, and flow from port 1 to port 2 must halt. The design incorporates Sun's floating style construction, minimizing internal binding risks due to installation torque or machining variations. This sequence valve should not be used for load holding applications as it requires cessation of flow for resetting. It features a main stage orifice protected by a durable 150-micron stainless steel screen and can handle pressures up to a maximum of 5000 psi (350 bar). With a capacity of handling up to 30 gpm (120 L/min), it provides reliable performance in various hydraulic applications. The SQFBJCN model also offers quick response times typically around 25 ms and maintains low leakage rates at maximum operating conditions. The unit is designed for easy interchangeability with other three-port sequence cartridges within its series, sharing identical flow paths and cavity dimensions for consistent integration into existing systems. Installation considerations include maintaining appropriate torque settings between 45-50 lbf ft (61-68 Nm) and ensuring compatibility with Viton seal kits for optimal performance.