The Indicator,rate of Flow, cataloged under National Stock Number 6680-01-522-5233, 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 Flow Ezy Filters Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 6680-01-522-5233 |
| Primary Part Number | LP-20 |
| Item Name | Indicator,rate of Flow |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Flow Ezy Filters Inc |
| Status | ACTIVE |
| Usage Design | RATE OF FLOW |
| Presentation Type | WINDOW |
| 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 |
|---|---|
| LP-20 PRIMARY | Flow Ezy Filters Inc (USA) |
| HI-721-1000 IT 78 | Hhe Services, Inc. (USA) |
| Reference | Meaning |
|---|---|
| HI-721-1000 | D/9 Drawing number reference only Hhe Services, Inc. |
NSN 6680-01-522-5233 is a Indicator,rate of Flow, manufactured by Flow Ezy Filters Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-522-5233 has 2 manufacturer part numbers on file: LP-20 (Flow Ezy Filters Inc), HI-721-1000 IT 78 (Hhe Services, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-523-0296, 6680-01-524-2894, 4820-01-528-8981. Verify interchangeability with system specifications before substitution.
Key specifications for LP-20: Usage Design: RATE OF FLOW; Presentation Type: WINDOW; Special Features: MAXIMUM OPERATING PRESSURE:3000PSI; Part Name Assigned by Controlling Agency: DRAWING)HYDRAULIC SCHEMATIC STERN GATE OPERATING GEAR LPD-17 CLASS(HI-721-1000). 2 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.