The Disk,valve, cataloged under National Stock Number 4820-01-444-9240, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Regulator Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-444-9240 |
| Primary Part Number | 408-OSY-RW-3.00INEDP702315IT4 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Regulator Company |
| Status | ACTIVE |
| Pressure Rating | 200.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Temp Rating | 140.0 FAHRENHEIT NOMINAL DEGF |
| Media for Which Designed | WATER OR OIL OR GAS |
| Material | IRON AND RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| 408-OSY-RW-3.00INEDP702315IT4 PRIMARY | Watts Regulator Company (USA) |
| Reference | Meaning |
|---|---|
| 408-OSY-RW-3.00INEDP702315IT4 | 5/9 Secondary reference Key Industries Inc Dba Liberty Equipment and Supply Co |
NSN 4820-01-444-9240 is a Disk,valve, manufactured by Watts Regulator Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-444-9240 has 1 manufacturer part number on file: 408-OSY-RW-3.00INEDP702315IT4 (Watts Regulator Company).
Key specifications for 408-OSY-RW-3.00INEDP702315IT4: Pressure Rating: 200.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Temp Rating: 140.0 FAHRENHEIT NOMINAL DEGF; Media for Which Designed: WATER OR OIL OR GAS; End Item Identification: 3IN GATE VALVE, SERIES 408-OSY-RW 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.