The Indicator,sight,liquid, cataloged under National Stock Number 6680-01-331-0639, 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 Dover Fluid Management, Inc. Div Dover Resources Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-331-0639 |
| Primary Part Number | 1570-2INCHES |
| Item Name | Indicator,sight,liquid |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Dover Fluid Management, Inc. Div Dover Resources Inc. |
| Status | ACTIVE |
| Maximum Temp Rating | 500.0 FAHRENHEIT DEGF |
| Maximum Working Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 1570-2INCHES PRIMARY | Dover Fluid Management, Inc. Div Dover Resources Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1570-2INCHES | 5/9 Secondary reference U.S. Government activity |
NSN 6680-01-331-0639 is a Indicator,sight,liquid, manufactured by Dover Fluid Management, Inc. Div Dover Resources Inc., classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-331-0639 has 1 manufacturer part number on file: 1570-2INCHES (Dover Fluid Management, Inc. Div Dover Resources Inc.).
Key specifications for 1570-2INCHES: Maximum Temp Rating: 500.0 FAHRENHEIT DEGF; Maximum Working Pressure: 250.0 POUNDS PER SQUARE INCH (PSI) LBS; Material: STEEL COMP 316. 3 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.