SUN HYDRAULICS
SQBBKBV

***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 SQBBKBV (SQBBKBV) is a highly specialized kickdown sequence valve designed for hydraulic applications requiring precise flow control. This valve is engineered to fully open and maintain an unrestricted flow path from port 1 to port 2 once the inlet pressure surpasses the preset valve setting. The pressure at port 1 must be greater than that at port 2 for the valve to remain open, and it resets only when flow ceases and pressures equalize or reverse. Notably, this model should not be used in load-holding scenarios due to its specific functional characteristics. The pressure at drain port 3 directly affects the valve setting in a 1:1 ratio, with a maximum allowable pressure of 5000 psi (350 bar). The SQBBKBV is ideal for actuator-side installations where flow cessation allows for resetting; if used on the pump side, the pump must be shut off for reset functionality. This model incorporates Sun's floating-style construction to mitigate potential binding issues from installation torque or machining variations. It features a cavity size of 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 approximately 25 ms, with minimal leakage rates under specified conditions. Adjustment involves up to five clockwise turns, facilitated by an internal hex screw and secured by a locknut with specified torque values. Weighing just .30 lb (.15 kg), this cartridge valve includes Viton seals as part of its standard configuration for robust performance in demanding environments.