The Valve,check, cataloged under National Stock Number 4820-01-289-3472, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-289-3472 |
| Primary Part Number | UN-3-075-HC-M-75-HC |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | International Valve Corp Dba Check-All Valve Mfg. Co. |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Material | NICKEL ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 75.0 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 |
|---|---|
| UN-3-075-HC-M-75-HC PRIMARY | International Valve Corp Dba Check-All Valve Mfg. Co. (USA) |
| 940-8592 75 PSI | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 696-8794 ITEM 13 | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 696-8794 ITEM 13 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 940-8592 75 PSI | 5/9 Secondary reference Aqua-Chem, Inc. |
| UN-3-075-HC-M | 5/9 Secondary reference International Valve Corp Dba Check-All Valve Mfg. Co. |
NSN 4820-01-289-3472 is a Valve,check, manufactured by International Valve Corp Dba Check-All Valve Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-289-3472 has 3 manufacturer part numbers on file: UN-3-075-HC-M-75-HC (International Valve Corp Dba Check-All Valve Mfg. Co.), 940-8592 75 PSI (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 696-8794 ITEM 13 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for UN-3-075-HC-M-75-HC: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 10 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.