# K981754: Automatic Vacuum Switch (Avs) Model Number Avs 5000

- Pathway: 510(k) (Special)
- Applicant: Porter Instrument Co., Inc.
- Decided: Jun 16, 1998 after 29 days
- Product code: CBN (Apparatus, Gas-Scavenging)
- Device class: 2
- Regulation: 21 CFR 868.5430
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K761140 (1976). 2 ancestors in all.
No later device cites it as a predicate yet.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K761140: Fraser Sweatman's Double Mask, Fraser Sweatman, Inc. (1976) Summary page 1.
- K802067: Clean-Air Pollution Reduction System, Porter Instrument Co., Inc. (1980) Summary page 1.

## Indications for use
The intended use of the AVS accessory is to control the vacuum flow in a gas scavenging apparatus.

Source page: https://510kreport.com/device/K981754
Methodology: https://510kreport.com/methodology