The Valve,check, cataloged under National Stock Number 4820-01-029-9641, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Raytheon Company Div Corp. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-029-9641 |
| Primary Part Number | 254562 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Raytheon Company Div Corp |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Operating Pressure | 1800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 160.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | -35.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Material | STEEL COMP 303 BODY |
| 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 |
|---|---|
| 254562 PRIMARY | Raytheon Company Div Corp (USA) |
NSN 4820-01-029-9641 is a Valve,check, manufactured by Raytheon Company Div Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-029-9641 has 1 manufacturer part number on file: 254562 (Raytheon Company Div Corp).
Key specifications for 254562: Flow Control Device: POPPET; Operating Pressure: 1800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 160.0 FAHRENHEIT SECOND RESPONSE DEGF; Maximum Operating Temp: -35.0 FAHRENHEIT FIRST RESPONSE DEGF. 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.