The Valve,check, cataloged under National Stock Number 4820-00-375-8339, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-375-8339 |
| Primary Part Number | 563-2100-982505ALT7ITEM66 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Mounting Position | HORIZONTAL |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Disk Loading Method | SPRING |
| 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 |
|---|---|
| 563-2100-982505ALT7ITEM66 PRIMARY | Naval Sea Systems Command (USA) |
| 563-2100-982505ALT7ITEM67 PRIMARY | Naval Sea Systems Command (USA) |
| 563-2100-982516ALT5ITEM45 PRIMARY | Naval Sea Systems Command (USA) |
| 4824-3113755PC413408 PRIMARY | Naval Sea Systems Command (USA) |
| 563-2100-982516ALT5ITEM51 PRIMARY | Naval Sea Systems Command (USA) |
| 563-2100-982505ALT7ITEM65 PRIMARY | Naval Sea Systems Command (USA) |
| 563-2100-982505ALT7ITEM81 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 413408PC413408 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 563-2100-982505ALT7ITEM65 | 5/9 Secondary reference U.S. Government activity |
| 563-2100-982516ALT5ITEM51 | 5/9 Secondary reference U.S. Government activity |
| 563-2100-982505ALT7ITEM66 | 5/9 Secondary reference U.S. Government activity |
| 4824-3113755PC413408 | 5/9 Secondary reference U.S. Government activity |
| 413408PC413408 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 413408 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| 563-2100-982505ALT7ITEM81 | 5/9 Secondary reference U.S. Government activity |
| 413408PC413408 | 5/9 Secondary reference Bendix Corp the |
| 563-2100-982516ALT5ITEM45 | 5/9 Secondary reference U.S. Government activity |
| 413408 | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 563-2100-982505ALT7ITEM67 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-375-8339 is a Valve,check, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-375-8339 has 7 manufacturer part numbers on file: 563-2100-982505ALT7ITEM66 (Naval Sea Systems Command), 563-2100-982505ALT7ITEM67 (Naval Sea Systems Command), 563-2100-982516ALT5ITEM45 (Naval Sea Systems Command), 4824-3113755PC413408 (Naval Sea Systems Command), 563-2100-982516ALT5ITEM51 (Naval Sea Systems Command) and 2 more.
Key specifications for 563-2100-982505ALT7ITEM66: Flow Control Device: BALL; Mounting Position: HORIZONTAL; Style Designator: STRAIGHT THRU; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 6 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.