The Switch,liquid Level, cataloged under National Stock Number 6680-01-569-3787, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-569-3787 |
| Primary Part Number | 3BY79 |
| Item Name | Switch,liquid Level |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Actuation Method | BUOYANCY |
| AC Voltage Rating | 115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT |
| Operating Temp Rating | 140.0 FAHRENHEIT MAXIMUM DEGF |
| Frequency Rating | 60.0 HERTZ NOMINAL FIRST OPERATING POWER RQMT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3BY79 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 6680-01-569-3787 is a Switch,liquid Level, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-569-3787 has 1 manufacturer part number on file: 3BY79 (W.w. Grainger, Inc. Div Government Sales Division).
Key specifications for 3BY79: Actuation Method: BUOYANCY; AC Voltage Rating: 115.0 VOLTS MINIMUM AND 230.0 VOLTS MAXIMUM FIRST OPERATING POWER RQMT; Operating Temp Rating: 140.0 FAHRENHEIT MAXIMUM DEGF; Special Features: MERCURY ACTIVATED, 20 FT CORD LENGTH, MAX RUNNING AMPS 10, STARTING CURRENT 60 AMPS, WIRE GUAGE 18 FT. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.