The Valve,check, cataloged under National Stock Number 4820-01-658-3030, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Specialty Mfg. Co Dba Specialty Mfg. Co. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-658-3030 |
| Primary Part Number | 6500290 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Specialty Mfg. Co Dba Specialty Mfg. Co |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Nominal Pipe Size Accommodated | 0.125 INCHES ALL ENDS IN |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 500.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.125 INCHES ALL ENDS IN |
| Maximum Operating Temp | 375.00 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Face to Face Distance | 1.38 INCHES IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 1.00 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| CHK BRS 215-2F2F-F | The Specialty Mfg. Co Dba Specialty Mfg. Co (USA) |
| 6500290 PRIMARY | The Specialty Mfg. Co Dba Specialty Mfg. Co (USA) |
NSN 4820-01-658-3030 is a Valve,check, manufactured by The Specialty Mfg. Co Dba Specialty Mfg. Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-658-3030 has 2 manufacturer part numbers on file: CHK BRS 215-2F2F-F (The Specialty Mfg. Co Dba Specialty Mfg. Co), 6500290 (The Specialty Mfg. Co Dba Specialty Mfg. Co).
Key specifications for 6500290: Flow Control Device: PISTON; Nominal Pipe Size Accommodated: 0.125 INCHES ALL ENDS IN; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 16 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.