The Valve,check, cataloged under National Stock Number 4820-00-732-3944, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hose Couplings Mfg Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-732-3944 |
| Primary Part Number | MAV-8UFS |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hose Couplings Mfg Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Mounting Position | VERTICAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Surface Treatment | CADMIUM |
| Thread Quantity Per Inch | 14 SECOND END |
| Material | STEEL OVERALL |
| Thread Series Designator | NPTF SECOND END |
| Thread Series Designator | NPSM FIRST END |
| 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 |
|---|---|
| 10899953 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 8MAV-8UFS | Anchor Rubber Company Inc (USA) |
| MAV-8UFS PRIMARY | Hose Couplings Mfg Inc (USA) |
| Reference | Meaning |
|---|---|
| 8MAV8UFS | 5/9 Secondary reference Anchor Swan Corp Sub of Amerace Corp |
| 8MAV8UFS | 5/9 Secondary reference Goodyear Tire and Rubber Co the |
NSN 4820-00-732-3944 is a Valve,check, manufactured by Hose Couplings Mfg Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-732-3944 has 3 manufacturer part numbers on file: 10899953 (U S Army Tank Automotive Command Amsta-Im-Mm), 8MAV-8UFS (Anchor Rubber Company Inc), MAV-8UFS (Hose Couplings Mfg Inc).
Key specifications for MAV-8UFS: Flow Control Device: BALL; Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE. 22 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.