The Disk,valve, cataloged under National Stock Number 4820-01-222-8805, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-222-8805 |
| Primary Part Number | C9552-5-Y-6 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Pressure Rating | 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Temp Rating | 975.0 FAHRENHEIT NOMINAL DEGF |
| Material | STEEL |
| 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 |
|---|---|
| C9552-5-Y-6 PRIMARY | The Walworth Company (USA) |
| N10700 PIECE 7A | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| C9552-5 | C/1 Advisory reference — outside the item-of-supply concept The Walworth Company |
| N10700 | D/9 Drawing number reference only The Walworth Company |
NSN 4820-01-222-8805 is a Disk,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-222-8805 has 2 manufacturer part numbers on file: C9552-5-Y-6 (The Walworth Company), N10700 PIECE 7A (The Walworth Company).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-235-1462, 4820-01-242-1473. Verify interchangeability with system specifications before substitution.
Key specifications for C9552-5-Y-6: Pressure Rating: 1500.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Temp Rating: 975.0 FAHRENHEIT NOMINAL DEGF; Material: STEEL. 3 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.