SUN HYDRAULICS
SQHBCBN

***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 SQHBCBN (SQHBCBN) is a kickdown sequence valve designed for hydraulic systems requiring precise pressure control and flow management. This valve opens completely when the inlet port 1 pressure surpasses the set threshold, allowing unrestricted flow from port 1 to port 2. It remains open as long as port 1's pressure exceeds that of port 2. To reset, the pressure at port 1 must drop below the valve setting, and flow from port 1 to port 2 must stop, with equal or higher pressure at port 2 compared to port 1. The SQHBCBN is intended for actuator-side applications where flow cessation allows resetting; it should not be used in load-holding scenarios. The valve features a main stage orifice shielded by a durable stainless steel screen and can handle pressures up to 5000 psi (350 bar). It incorporates Sun's floating style construction, reducing risks of internal binding due to installation torque or machining variations. With a capacity of up to 60 gpm (240 L/min) and a typical response time of 25 ms, this model is efficient and reliable for various hydraulic applications. The valve's installation requires specific torques: a hex size of 1\u00bc inches (31.8 mm) with an installation torque between 150-160 lbf ft (203-217 Nm), while the adjustment screw has an internal hex size of ^5\u204432 inches (4 mm). The locknut requires a torque of 80-90 lbf in (9-10 Nm). Weighing approximately 1.50 lb (0.70 kg), it also includes a Viton seal kit for enhanced durability and performance under diverse conditions.