SUN HYDRAULICS
SQBBKBN

***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 SQBBKBN (Material Number: SQBBKBN) is a kickdown sequence valve designed to facilitate an unrestricted flow path from port 1 to port 2 once the pressure at inlet port 1 surpasses the valve's preset threshold. This valve remains open as long as the pressure at port 1 exceeds that at port 2, and it resets only when the pressure falls below this setting, with flow ceasing from port 1 to port 2 and equal or greater pressure at port 2 compared to port 1. It is not suitable for load holding applications. The valve features a maximum operating pressure of 5000 psi (350 bar) and is intended for use on the actuator side of a system, as flow must stop for reset; if used on the pump side, pump flow must be halted for resetting. The design incorporates Sun\u2019s floating style construction, minimizing internal binding due to excessive installation torque or machining variations. The valve offers a capacity of up to 7.5 gpm (30 L/min) and has a typical response time of approximately 25 ms. It features interchangeable three-port sequence cartridges with consistent flow paths and cavities across frame sizes, enhancing versatility in application. Adjustments can be made via an internal hex screw with up to five clockwise turns required to increase settings, and it includes specific torque requirements for installation and locknut adjustments. The product weighs approximately .30 lb (.15 kg) and includes Viton seal kits available under cartridge number 990163006.