The Valve,check, cataloged under National Stock Number 4820-01-622-7121, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is International Valve Corp Dba Check-All Valve Mfg. Co.. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-622-7121 |
| Primary Part Number | USJSSVT.125 SS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.5 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) FIRST END |
| Connection Style | REDUCED SOCKET (PIPE) SECOND END |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 1.5 INCHES IN |
| Face to Face Distance | 4.3 INCHES IN |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | STEEL COMP 316 BODY |
| Material | RUBBER SEAT |
| Opening Pressure Setting | 0.125 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 |
|---|---|
| USJSSVT.125 SS PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
NSN 4820-01-622-7121 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-622-7121 has 1 manufacturer part number on file: USJSSVT.125 SS (International Valve Corp Dba Check-All Valve Mfg. Co.).
Key specifications for USJSSVT.125 SS: Nominal Pipe Size Accommodated: 1.5 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: REDUCED SOCKET (PIPE) SECOND END; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 13 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.