# K923781: MXR-2000 Flowmeter

- Pathway: 510(k) (Traditional)
- Applicant: Porter Instrument Co., Inc.
- Decided: Jun 10, 1993 after 317 days
- Product code: CAX (Flowmeter, Tube, Thorpe, Back-Pressure Compensated)
- Device class: 1
- Regulation: 21 CFR 868.2340
- Recalls of this device: 1 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
1 later device descends from it; 1 cites it directly.
0 of 2 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K062155: Digital MXR-D Flowmeter (2006), 0 descendants of its own

## Recalls of this device
- Aug 26, 2008 · Not classified · Z-0228-2009: inverted check value on the bag tee assembly which can cause leaking of mixed N2O/O2 gas

Source page: https://510kreport.com/device/K923781
Methodology: https://510kreport.com/methodology