The Disk,valve, cataloged under National Stock Number 4820-01-313-4745, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nibco Inc Chemtrol Div. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-313-4745 |
| Primary Part Number | F-838-31-4IN DISC |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Nibco Inc Chemtrol Div |
| Status | ACTIVE |
| Pressure Rating | 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Temp Rating | 550.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Media for Which Designed | GAS OR OIL OR WATER |
| Material | COPPER ALLOY 922 |
| 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 |
|---|---|
| F-838-31-4IN DISC PRIMARY | Nibco Inc Chemtrol Div (USA) |
| Reference | Meaning |
|---|---|
| F-838-31-4IN DISC | 5/9 Secondary reference Nibco Inc |
| F-838-31-4IN DISC | 3/9 Design control — primary reference Nibco Inc |
NSN 4820-01-313-4745 is a Disk,valve, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-313-4745 has 1 manufacturer part number on file: F-838-31-4IN DISC (Nibco Inc Chemtrol Div).
Key specifications for F-838-31-4IN DISC: Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Temp Rating: 550.0 FAHRENHEIT NOMINAL DEGF; Material Document and Classification: ASTM B61 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Media for Which Designed: GAS OR OIL OR WATER. 5 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.