The Disk,valve, cataloged under National Stock Number 4820-01-191-8675, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Uhlir Manufacturing Corp.. 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 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 | 4820-01-191-8675 |
| Primary Part Number | SK-15117-4 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Uhlir Manufacturing Corp. |
| Status | ACTIVE |
| Nominal Thread Size | 4.000 INCHES IN |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| Q-1334-13 AND BM-3179 | Uhlir Manufacturing Corp. (USA) |
| SK-15117-4 PRIMARY | Uhlir Manufacturing Corp. (USA) |
NSN 4820-01-191-8675 is a Disk,valve, manufactured by Uhlir Manufacturing Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-191-8675 has 2 manufacturer part numbers on file: Q-1334-13 AND BM-3179 (Uhlir Manufacturing Corp.), SK-15117-4 (Uhlir Manufacturing Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-192-6102. Verify interchangeability with system specifications before substitution.
Key specifications for SK-15117-4: Nominal Thread Size: 4.000 INCHES IN; Special Features: STOP-CHECK VALVE CONSTRUCTION; Material: NICKEL ALLOY. 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.