The Disk,valve, cataloged under National Stock Number 4820-01-095-8775, 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4 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-095-8775 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.500 INCHES NOMINAL IN |
| Style Designator | SWING CHECK |
| Material Document and Classification | QQ-C-390, ALLOY 903-D5, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 2621-927-02TABLE 7 2IN | 3/9 Design control — primary reference National Oilwell |
| 2621-927-02TABLE 7 2IN | 5/9 Secondary reference U.S. Government activity |
| 2621-927-02 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-095-8775 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-130-8467, 4820-01-131-3037. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-095-8775: Flange Seat to Disk End Height: 0.500 INCHES NOMINAL IN; Style Designator: SWING CHECK; Material Document and Classification: QQ-C-390, ALLOY 903-D5, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE; Special Features: CLAPPER FOR 2 INCH SIZE VALVE W/SWING PIN AND ATTACHING PARTS,SEAL RING,DRAIN CAP W/BOLT AND NUT; MATERIAL: COPPER ALLOY 903 IN. 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.