--- title: "nuwellis AquaFlexFlow UF 500 Plus, REF 114156, Catalog Number A06163, extraco... — FDA record Z-0831-2025 | Is It on Recall" description: "The AquaFlexFlow UF 500 Plus extracorporeal blood circuit used with the Aquadex SmartFlow and FlexFlow Systems may indicate \"Ultrafiltrate Weight Mismatch\" or E" url: https://isitonrecall.com/recall/fda-device-z-0831-2025-nuwellis-aquaflexflow-uf-500-plus-ref-114156-catalog-number-a06163-extracorporeal-blood-circuit-whic/ updated: 2026-10-01 site: "Is It on Recall" language: en --- [Recall archive](https://isitonrecall.com/archives/) / FDA device enforcement # nuwellis AquaFlexFlow UF 500 Plus, REF 114156, Catalog Number A06163, extracorporeal blood circuit which is used with... — FDA record Z-0831-2025 Reported completed Status as reported in the agency record. FDA warns that enforcement status may not track the current recall lifecycle; check the current official notice. Source date Dec 11, 2024. Retrieved Oct 1, 2026. Last updated Oct 1, 2026. Archive changed Oct 1, 2026. USDA FSIS records are unavailable; [check FSIS directly](https://www.fsis.usda.gov/recalls). [Source coverage and dates](https://isitonrecall.com/sources/). ## What the record says - **Product**: nuwellis AquaFlexFlow UF 500 Plus, REF 114156, Catalog Number A06163, extracorporeal blood circuit which is used with the Aquadex SmartFlow or Aquadex FlexFlow System - **Reason**: The AquaFlexFlow UF 500 Plus extracorporeal blood circuit used with the Aquadex SmartFlow and FlexFlow Systems may indicate "Ultrafiltrate Weight Mismatch" or Excessive Weight Mismatch Alarms while in use. If not addressed, this failure could result in excess fluid removal from a patient leading to Acute Volume Depletion. This failure is especially serious when the Aquadex System is being used on pediatric patients. - **Classification**: Class I - **Recalling firm**: Nuwellis Inc - **Quantity**: 845 units - **Agency-reported status**: Completed - **Source record identifier**: Z-0831-2025 [Open the official record](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-0831-2025%22) [What the recall classes mean](https://isitonrecall.com/guides/recall-classes/). Classification is an agency assessment, not individual medical advice. ## Lot and product identifiers | Label field | Details supplied by the agency | | --- | --- | | Lot, code or applicability | Lot Numbers: 22697, 22698, 22699, 22700, 22701, 22702, 22703, 22704, 22705, 22706, 22707, 22708, 22721, 22722, 22723, 22724, 22733, 22734, 22735, 22736, 22737, 22738, 22739, 22740. | Match all identifying details in the current notice. A brand name alone is not enough. ## Distribution US Nationwide Distribution and the country of Hong Kong States below are derived from the distribution text, including nationwide wording. They are not inferred from the firm's address. - [Alaska](https://isitonrecall.com/state/alaska/) - [Alabama](https://isitonrecall.com/state/alabama/) - [Arkansas](https://isitonrecall.com/state/arkansas/) - [Arizona](https://isitonrecall.com/state/arizona/) - [California](https://isitonrecall.com/state/california/) - [Colorado](https://isitonrecall.com/state/colorado/) - [Connecticut](https://isitonrecall.com/state/connecticut/) - [Delaware](https://isitonrecall.com/state/delaware/) - [Florida](https://isitonrecall.com/state/florida/) - [Georgia](https://isitonrecall.com/state/georgia/) - [Hawaii](https://isitonrecall.com/state/hawaii/) - [Iowa](https://isitonrecall.com/state/iowa/) - [Idaho](https://isitonrecall.com/state/idaho/) - [Illinois](https://isitonrecall.com/state/illinois/) - [Indiana](https://isitonrecall.com/state/indiana/) - [Kansas](https://isitonrecall.com/state/kansas/) - [Kentucky](https://isitonrecall.com/state/kentucky/) - [Louisiana](https://isitonrecall.com/state/louisiana/) - [Massachusetts](https://isitonrecall.com/state/massachusetts/) - [Maryland](https://isitonrecall.com/state/maryland/) - [Maine](https://isitonrecall.com/state/maine/) - [Michigan](https://isitonrecall.com/state/michigan/) - [Minnesota](https://isitonrecall.com/state/minnesota/) - [Missouri](https://isitonrecall.com/state/missouri/) - [Mississippi](https://isitonrecall.com/state/mississippi/) - [Montana](https://isitonrecall.com/state/montana/) - [North Carolina](https://isitonrecall.com/state/north-carolina/) - [North Dakota](https://isitonrecall.com/state/north-dakota/) - [Nebraska](https://isitonrecall.com/state/nebraska/) - [New Hampshire](https://isitonrecall.com/state/new-hampshire/) - [New Jersey](https://isitonrecall.com/state/new-jersey/) - [New Mexico](https://isitonrecall.com/state/new-mexico/) - [Nevada](https://isitonrecall.com/state/nevada/) - [New York](https://isitonrecall.com/state/new-york/) - [Ohio](https://isitonrecall.com/state/ohio/) - [Oklahoma](https://isitonrecall.com/state/oklahoma/) - [Oregon](https://isitonrecall.com/state/oregon/) - [Pennsylvania](https://isitonrecall.com/state/pennsylvania/) - [Rhode Island](https://isitonrecall.com/state/rhode-island/) - [South Carolina](https://isitonrecall.com/state/south-carolina/) - [South Dakota](https://isitonrecall.com/state/south-dakota/) - [Tennessee](https://isitonrecall.com/state/tennessee/) - [Texas](https://isitonrecall.com/state/texas/) - [Utah](https://isitonrecall.com/state/utah/) - [Virginia](https://isitonrecall.com/state/virginia/) - [Vermont](https://isitonrecall.com/state/vermont/) - [Washington](https://isitonrecall.com/state/washington/) - [Wisconsin](https://isitonrecall.com/state/wisconsin/) - [West Virginia](https://isitonrecall.com/state/west-virginia/) - [Wyoming](https://isitonrecall.com/state/wyoming/) ## Dates in the source - **Report date**: Jan 22, 2025 - **Recall initiation date**: Dec 11, 2024 - **Center classification date**: Jan 16, 2025 FDA company pages use the listing date; enforcement records use initiation dates; CPSC uses recall date; NHTSA uses report-received date. These dates are not interchangeable. ## What to do next Read the official notice for the action that applies to your exact product. [Read the current instructions](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-0831-2025%22) ## Related records [Medical devices records](https://isitonrecall.com/category/medical-devices/) [Nuwellis Inc records](https://isitonrecall.com/brand/nuwellis-inc/)