The Valve,check, cataloged under National Stock Number 4820-01-292-7975, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Superior Compressor Company Dba Grimmer Schmidt Smith Compressors. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-292-7975 |
| Primary Part Number | 125-34763 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Superior Compressor Company Dba Grimmer Schmidt Smith Compressors |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 160.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 2.000 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | OIL, LUBRICATING, DIESTER BASE SECOND RESPONSE |
| Material | IRON BODY |
| Material | ALUMINUM SEAT |
| Thread Series Designator | NPTF ALL ENDS |
| 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 |
|---|---|
| 125-34763 PRIMARY | Superior Compressor Company Dba Grimmer Schmidt Smith Compressors (USA) |
| Reference | Meaning |
|---|---|
| 7-24504 | 5/9 Secondary reference Superior Compressor Company Dba Grimmer Schmidt Smith Compressors |
NSN 4820-01-292-7975 is a Valve,check, manufactured by Superior Compressor Company Dba Grimmer Schmidt Smith Compressors, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-292-7975 has 1 manufacturer part number on file: 125-34763 (Superior Compressor Company Dba Grimmer Schmidt Smith Compressors).
Key specifications for 125-34763: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 15 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.