The Cap,valve, cataloged under National Stock Number 4820-01-184-2185, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-184-2185 |
| Item Name | Cap,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Valve Type for Which Designed | AIR PRESSURE RELAY |
| Material Document and Classification | MIL-B-16444 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| Attachment Method | BOLTS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 88233B-1319-V | D/9 Drawing number reference only Rosemount Analytical, Inc. Div Process Analytical Division |
| M573-003 | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division |
| M573-003 | 3/9 Design control — primary reference U.S. Government activity |
| N-492904 | 5/9 Secondary reference Rosemount Analytical, Inc. Div Process Analytical Division |
| B-1319-V | 5/9 Secondary reference Rosemount Analytical, Inc. Div Process Analytical Division |
| N-492904 ITEM 4 | 5/9 Secondary reference Rosemount Analytical, Inc. Div Process Analytical Division |
NSN 4820-01-184-2185 is a Cap,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-184-2186. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-184-2185: Valve Type for Which Designed: AIR PRESSURE RELAY; Material Document and Classification: MIL-B-16444 MIL SPEC SINGLE MATERIAL RESPONSE; Material: COPPER ALLOY; Attachment Method: BOLTS. 4 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.