SUN HYDRAULICS
SQBBKCN

***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 SQBBKCN (SQBBKCN) is a high-performance kickdown sequence valve designed for hydraulic systems where precise pressure control and fluid flow are essential. This valve is engineered to open fully and remain open once the inlet port 1 pressure surpasses the valve's preset threshold, allowing an unrestricted flow from port 1 to port 2. It automatically resets when the pressure at port 1 drops below this setting, flow ceases, and the pressure at port 2 equals or exceeds that at port 1. The SQBBKCN is not suitable for load-holding applications due to its operational characteristics. The maximum allowable pressure at port 3 is additive to the valve setting in a direct 1:1 ratio, with a limit of 5000 psi (350 bar). This valve is ideally used on the actuator side of hydraulic systems since flow cessation is necessary for resetting; using it on the pump side requires stopping pump flow for reset. The SQBBKCN model features Sun's floating style construction, minimizing risks of internal component binding due to excessive torque or machining variations. It supports a cavity size T-163A, with a capacity of 7.5 gpm (30 L/min) and operates effectively up to a maximum pressure of 5000 psi (350 bar). The typical response time is around 25 milliseconds, with minimal leakage rates under specified conditions. Adjustments can be made via an internal hex screw with specific torque settings provided for secure installation. Weighing just .30 lb (.15 kg), this compact yet robust component comes with a Viton seal kit option for enhanced durability in various environments.