The Valve,check, cataloged under National Stock Number 4820-01-365-2497, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Donaldson Company, Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-365-2497 |
| Primary Part Number | 431385 ITEM 6 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Donaldson Company, Inc. |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING BODY |
| Material | ALUMINUM ALLOY SEAT |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 327961 | Donaldson Company, Inc. (USA) |
| 431384 ITEM 6 | Donaldson Company, Inc. (USA) |
| 431385 ITEM 6 PRIMARY | Donaldson Company, Inc. (USA) |
| 430621 ITEM 6 | Donaldson Company, Inc. (USA) |
NSN 4820-01-365-2497 is a Valve,check, manufactured by Donaldson Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-365-2497 has 4 manufacturer part numbers on file: 327961 (Donaldson Company, Inc.), 431384 ITEM 6 (Donaldson Company, Inc.), 431385 ITEM 6 (Donaldson Company, Inc.), 430621 ITEM 6 (Donaldson Company, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-375-3652. Verify interchangeability with system specifications before substitution.
Key specifications for 431385 ITEM 6: Flow Control Device: DISK; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 160.0 FAHRENHEIT SINGLE RESPONSE DEGF; Media for Which Designed: OIL, LUBRICATING, DIESTER BASE SINGLE RESPONSE. 8 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.