The Valve,check, cataloged under National Stock Number 4820-01-703-3266, 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 12 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 | 4820-01-703-3266 |
| Primary Part Number | USHSSBN.125SS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| Status | ACTIVE |
| Connection Style | SOCKET WITH BRAZING RING (TUBE) ALL ENDS |
| Nominal Length | 3.640 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 1.0 INCHES IN |
| Maximum Operating Temp | 700.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 1.3350 INCHES ALL ENDS IN |
| Face to Face Distance | 3.640 INCHES IN |
| Media for Which Designed | LIQUID SINGLE RESPONSE |
| Material | STEEL COMP 316 OVERALL |
| 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 |
|---|---|
| USHSSBN.125SS PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
NSN 4820-01-703-3266 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-703-3266 has 1 manufacturer part number on file: USHSSBN.125SS (International Valve Corp Dba Check-All Valve Mfg. Co.).
Key specifications for USHSSBN.125SS: Connection Style: SOCKET WITH BRAZING RING (TUBE) ALL ENDS; Nominal Length: 3.640 INCHES ALL ENDS IN; Connection Type: UNTHREADED EXTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU. 12 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.