The Valve,check, cataloged under National Stock Number 4820-00-826-7192, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Controls Integrated Sensing, Inc.. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-826-7192 |
| Primary Part Number | 7453-6 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Controls Integrated Sensing, Inc. |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | FLARED (TUBE) SECOND END |
| Connection Style | FLARED (TUBE) FIRST END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED EXTERNAL TUBE SECOND END |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Maximum Operating Temp | 750.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Surface Treatment | PASSIVATE |
| Thread Class | 2A SECOND END A |
| Thread Class | 2A FIRST END A |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF FIRST END |
| Thread Series Designator | UNF SECOND END |
| 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 |
|---|---|
| 868889-1 | Service & Sales Inc (USA) |
| 7453-6 PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| 7453-6G PRIMARY | Curtiss-Wright Controls Integrated Sensing, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 868889-1 | 3/2 Design control — primary reference U.S. Government activity |
| 2D1626 | 3/2 Design control — primary reference U.S. Government activity |
| 7453-3 | 5/9 Secondary reference Curtiss-Wright Controls Integrated Sensing, Inc. |
| SD1626 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-826-7192 is a Valve,check, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-826-7192 has 3 manufacturer part numbers on file: 868889-1 (Service & Sales Inc), 7453-6 (Curtiss-Wright Controls Integrated Sensing, Inc.), 7453-6G (Curtiss-Wright Controls Integrated Sensing, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5365-00-868-2784, 5130-01-734-1702. Verify interchangeability with system specifications before substitution.
Key specifications for 7453-6: Flow Control Device: POPPET; Connection Style: FLARED (TUBE) SECOND END; Connection Style: FLARED (TUBE) FIRST END; Mounting Position: HORIZONTAL OR VERTICAL. 22 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.