The Disk,valve, cataloged under National Stock Number 4820-01-423-1874, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Newmans Inc New Jersey Div. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-423-1874 |
| Primary Part Number | A0831-01 ITEM 2 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Newmans Inc New Jersey Div |
| Status | ACTIVE |
| Style Designator | SOLID WEDGE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| A0831-01 ITEM 2 PRIMARY | Newmans Inc New Jersey Div (USA) |
| 28S-FS2 ITEM 2 1/4IN. | Newmans Inc New Jersey Div (USA) |
| Reference | Meaning |
|---|---|
| A0831-01 REV0 I | C/1 Advisory reference — outside the item-of-supply concept Newmans Inc New Jersey Div |
| A0831-01 | D/9 Drawing number reference only Newmans Inc New Jersey Div |
NSN 4820-01-423-1874 is a Disk,valve, manufactured by Newmans Inc New Jersey Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-423-1874 has 2 manufacturer part numbers on file: A0831-01 ITEM 2 (Newmans Inc New Jersey Div), 28S-FS2 ITEM 2 1/4IN. (Newmans Inc New Jersey Div).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-423-2002, 4820-01-423-2012, 4820-01-423-2020. Verify interchangeability with system specifications before substitution.
Key specifications for A0831-01 ITEM 2: Style Designator: SOLID WEDGE; End Item Identification: NAVY WEAPONS SYSTEM CODE,TH,STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: STEEL CORROSION RESISTING. 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.