The Meter,flow Rate Indicating, cataloged under National Stock Number 6680-01-341-3923, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-341-3923 |
| Primary Part Number | 1431-3/4 IN. |
| Item Name | Meter,flow Rate Indicating |
| 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 |
| Scale Quantity | 1 |
| Inlet Connection Position for Which Designed | HORIZONTAL |
| Design Type | GLASS |
| Dial Scale Marking Range | +0.25 TO 4.00 |
| Inlet Connection Device Type | STATIONARY |
| Inlet Connection Type | THREADED |
| Outlet Connection Device Type | STATIONARY |
| Outlet Connection Position for Which Designed | HORIZONTAL |
| Meter Type | POINTER CONNECTED TO VANE |
| Dial Scale Reference Pointer | INCLUDED |
| Outlet Connection Type | THREADED |
| 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 |
|---|---|
| 1431-3/4 IN. PRIMARY | Dover Fluid Management, Inc. Div Dover Resources Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1431-3/4 IN. | 5/9 Secondary reference U.S. Government activity |
NSN 6680-01-341-3923 is a Meter,flow Rate Indicating, 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 6680-01-341-3923 has 1 manufacturer part number on file: 1431-3/4 IN. (Dover Fluid Management, Inc. Div Dover Resources Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-525-4659. Verify interchangeability with system specifications before substitution.
Key specifications for 1431-3/4 IN.: Scale Quantity: 1; Inlet Connection Position for Which Designed: HORIZONTAL; Design Type: GLASS; Dial Scale Marking Range: +0.25 TO 4.00. 11 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.