SUN HYDRAULICS
SQFBKDV

***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 SQFBKDV (SQFBKDV) is a versatile kickdown sequence valve engineered to enhance hydraulic system performance by providing an unrestricted flow path from port 1 to port 2 when the inlet pressure exceeds the valve setting. This valve remains open as long as the inlet pressure surpasses the outlet pressure, offering seamless operation in various applications. It is essential to reset the valve by reducing the pressure at port 1 below the valve setting and ensuring no flow between ports 1 and 2, with equal or greater pressure at port 2 compared to port 1. The SQFBKDV model is not recommended for load-holding applications due to its design, which includes a main stage orifice protected by a robust 150-micron stainless steel screen. This sequence valve can handle a maximum operating pressure of up to 5000 psi (350 bar) and features a factory-set kickdown point for optimal performance. Its response time is typically around 25 milliseconds, and it maintains minimal leakage with a maximum of 3 in\u00b3/min (50 cc/min) at standard conditions. The installation requires specific torque settings: a valve installation torque of 45-50 lbf ft (61-68 Nm), an adjustment screw internal hex size of 5/32 in. (4 mm), and a locknut torque of 80-90 lbf in. (9-10 Nm). Weighing approximately .50 lb (0.25 kg), this cartridge-style valve incorporates Sun's floating style construction to minimize binding risks due to excessive installation torque or machining variations. Designed for actuator side usage, it ensures that flow through the valve ceases for resetting purposes, making it vital that pump flow is halted if used on the pump side of systems. The product's compatibility with all three-port sequence cartridges allows for easy interchangeability while maintaining consistent functionality across similar frame sizes.