The Cap Valve Cylinder, cataloged under National Stock Number 4820-01-108-4271, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-108-4271 |
| Item Name | Cap Valve Cylinder |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| 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 |
|---|---|
| NH-7290 PIECE 314 | 5/9 Secondary reference U.S. Government activity |
| NH-7366 PIECE 314 | 5/9 Secondary reference U.S. Government activity |
| NH6756A314 | 5/9 Secondary reference U.S. Government activity |
| 314NF-6115 | 5/9 Secondary reference U.S. Government activity |
| T192019 | 3/9 Design control — primary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| T192019 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 192019 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-108-4271 is a Cap Valve Cylinder, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3120-01-357-2339. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-108-4271: End Item Identification: TURBINE STM FIRE PMP. 0 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.