The Stem,fluid Valve, cataloged under National Stock Number 4820-01-633-4884, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-633-4884 |
| Primary Part Number | B12195-1D0 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| B12195-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 7550478-1970-003-035-7D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| B12195-1 | 3/1 Design control — primary reference Mission Systems Orchard Park Inc |
| G547-0002-1970-003-035-7 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-1970-003-035-7D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 1970-003-035-07D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 1970-003-035-07 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
| 7550478-1970-003-035-7 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-633-4884 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-633-4884 has 1 manufacturer part number on file: B12195-1D0 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-644-4839. Verify interchangeability with system specifications before substitution.
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.