SUN HYDRAULICS
SQFBOAN

***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 SQFBOAN (SQFBOAN) is a specialized kickdown sequence valve designed to facilitate an unrestricted flow path from port 1 to port 2 once the inlet pressure surpasses the valve's setting. This unit is particularly suited for applications on the actuator side of a hydraulic system, where flow cessation is necessary for valve resetting. The valve remains open as long as the inlet pressure at port 1 exceeds that at port 2, and it resets when the inlet pressure falls below the set threshold and flow ceases. Notably, this model should not be employed in load-holding applications due to its design characteristics. The SQFBOAN features a main stage orifice protected by a robust 150-micron stainless steel screen, ensuring durability and reliability under high-pressure conditions up to a maximum of 5000 psi (350 bar). Additionally, pressure at port 3 directly influences the valve setting at a 1:1 ratio, which requires careful consideration during installation. The floating style construction minimizes potential binding issues due to excessive torque or machining variations. Physically and functionally interchangeable with other three-port sequence cartridges of similar frame size, this valve offers versatility in various hydraulic systems. It boasts a capacity of up to 30 gpm (120 L/min) with typical response times around 25 ms. The adjustment mechanism allows for precision tuning with up to five clockwise turns needed to increase settings. For secure installation, it demands specific torque values: valve installation torque ranges between 45-50 lbf ft (61-68 Nm), while locknut torque is set between 80-90 lbf in (9-10 Nm). Weighing approximately .50 lb (.25 kg), this model also includes Viton seal kits for optimal performance in diverse environments.