SUN HYDRAULICS
SQBBCBN

***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 SQBBCBN (Material Number: SQBBCBN) is a kickdown sequence valve designed to manage hydraulic flow by opening fully and maintaining an open state when the inlet port 1 pressure surpasses the valve setting, allowing unrestricted flow from port 1 to port 2. This valve remains open as long as the pressure at port 1 exceeds that at port 2. To reset, the pressure at port 1 must drop below the set threshold, with no flow between ports and equal or greater pressure at port 2 compared to port 1. Not suitable for load holding applications, this valve features a maximum operating pressure of 5000 psi (350 bar) and incorporates Sun's floating style construction to prevent binding from installation torque or machining variations. Designed for actuator-side use, it requires cessation of flow for resetting; if used on the pump side, pump flow must halt for reset. The valve is interchangeable with other three-port sequence cartridges in terms of flow path and cavity size within a given frame size. It supports a capacity of up to 7.5 gpm (30 L/min) with typical response times around 25 ms and minimal leakage rates under specified conditions. Installation specifications include a valve hex size of 3/4 inch (19.1 mm), installation torque between 20-25 lbf\u00b7ft (27-33 Nm), and adjustment screw internal hex size of 5/32 inch (4 mm). The locknut requires a torque setting between 80-90 lbf\u00b7in (9-10 Nm). The product weighs approximately .30 lb (.15 kg) and uses Viton seal kits identified by cartridge number: 990163006.