SUN HYDRAULICS
FQCAXAN

***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 FQCAXAN (Material Number: FQCAXAN) 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 flow to and from the actuator but closes instantly if the flow exceeds its set limit, ensuring safety and control in hydraulic systems. The FQCAXAN requires customers to specify a flow rating, with factory settings accurate within 10% of the requested rate. It is crucial for this setting to be at least 25% above the maximum normal system flow to prevent false tripping due to transient flows. The valve operates by closing when the flow from port 1 to port 2 surpasses its threshold and resets when pressures at both ports equalize. This spool-type valve features Sun's floating style construction, minimizing internal part binding risks due to excessive installation torque or machining variations. It fits into a T-13A cavity and belongs to series 1, with a capacity of up to 6 gpm (23 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). Despite its robust design, some leakage may occur, potentially causing actuator drift. The valve's hex size is 7/8 inches (22.2 mm), requiring an installation torque between 30-35 lbf ft (41-47 Nm). Weighing just .20 lb (0.10 kg), it includes a Viton seal kit for optimal performance. This product is not intended for oil loss prevention or fire protection but specifically prevents uncontrolled actuator movement during hose failure scenarios. Proper setting selection is critical as predicting transient flows can be challenging; therefore, sizing should allow room for tuning adjustments if necessary.