SUN HYDRAULICS
FQEAXBV

***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 FQEAXBV (FQEAXBV) is a flow fuse cartridge designed to maintain the position of a hydraulic actuator in the event of a hose or line break. This valve allows fluid to flow to and from the actuator but will close instantly if the flow from the actuator exceeds the pre-set threshold. The valve requires a specified flow rating, which can be factory set within 10% of the requested setting. It is crucial for users to set this flow rating at least 25% above their maximum normal system flow to prevent false tripping. The valve operates by closing when flow from port 1 to port 2 exceeds its setting and resets once pressures at both ports are equalized. The FQEAXBV model is a spool-type valve and may exhibit some leakage, potentially causing actuator drift. It incorporates Sun's floating style construction, which minimizes internal part binding due to excessive installation torque or machining variations. The corrosion-resistant cartridge design makes it suitable for use in harsh environments, with specific configurations indicated by suffixes such as AP or LH. Technical specifications include a cavity size of T5A, series 2 capacity with a maximum flow rate of 15 gpm (60 L/min), and an operating pressure limit of up to 5000 psi (350 bar). The maximum allowable leakage at 110 SUS (24 cSt) is 3 in\u00b3/min at 1000 psi (50 cc/min at 70 bar). Installation requires a torque between 45-50 lbf\u00b7ft (61-68 Nm), with an overall model weight of .40 lb (.20 kg). A Viton seal kit can be used for cartridge maintenance, identified by part number 990203006.