The Meter,fluid Flow Indicating,diff, cataloged under National Stock Number 6680-01-654-1515, 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 Ashcroft Inc Dba Heise. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-654-1515 |
| Primary Part Number | ED24-3CB4-RWB0 |
| Item Name | Meter,fluid Flow Indicating,diff |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Length | 6.269 INCHES NOMINAL IN |
| Scale Inscription/background Color | BACKGROUND COLOR: WHITE |
| Totalizing Integrator Register | NOT INCLUDED |
| Smallest Increment Indicated | 1.0 |
| Diameter | 5.593 INCHES NOMINAL IN |
| Inlet Connection Size | 1/4-NPT |
| Case Shape | ROUND |
| Material | ALUMINUM CASE |
| Media for Which Designed | LIQUID |
| Scale Presentation Range | 0-100 AT 90 |
| Mounting Type | FLUSH |
| Maximum Differential Pressure | DIFFERENTIAL PRESSURE RANGE: TULSE RANGE 45; DIAL RANGE 0-15; STATIC PRESS: 67.5 |
| 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 |
|---|---|
| ED24-3CB4-RWB0 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| G27-387 | D/9 Drawing number reference only Ashcroft Inc Dba Heise |
NSN 6680-01-654-1515 is a Meter,fluid Flow Indicating,diff, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-654-1515 has 1 manufacturer part number on file: ED24-3CB4-RWB0 (Ashcroft Inc Dba Heise).
2 possible matches (shared part number, not a government interchangeability claim): 6685-01-670-7323, 6685-01-689-1262. Verify interchangeability with system specifications before substitution.
Key specifications for ED24-3CB4-RWB0: Length: 6.269 INCHES NOMINAL IN; Scale Inscription/background Color: BACKGROUND COLOR: WHITE; Totalizing Integrator Register: NOT INCLUDED; Smallest Increment Indicated: 1.0. 12 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.