The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-447-1129, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-447-1129 |
| Primary Part Number | 280446 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Media for Which Designed | AIR |
| 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 |
|---|---|
| 280446 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 216378 PRIMARY | Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA) |
| 216378 | Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc (USA) |
| Reference | Meaning |
|---|---|
| 216378 | 5/9 Secondary reference Ltv Steel Co Inc |
| 280446 | 5/9 Secondary reference Hercules Engine Co Inc |
| 216378 | 5/9 Secondary reference Paccar Government Group Co Yarrow Bay Office Pk |
NSN 4820-00-447-1129 is a Diaphragm,valve,flat, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-447-1129 has 3 manufacturer part numbers on file: 280446 (Brinkley Technology Group Llc Dba Hercules Manufacturing), 216378 (Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems), 216378 (Johnston Pump Co Inc Div of Johnston Pump/general Valve Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-680-5942, 2910-01-479-7847. Verify interchangeability with system specifications before substitution.
Key specifications for 280446: Media for Which Designed: AIR. 1 specification is 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.