The Valve,safety Relief, cataloged under National Stock Number 4820-01-194-9997, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-194-9997 |
| Primary Part Number | 12332745 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Connection Style | GASKET SEAL(BOSS) ALL ENDS |
| Minimum Operating Temp | -25.0 FAHRENHEIT DEGF |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Style Designator | CAPS W/OFFSET |
| Operating Pressure | 2000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +50.0 TO 2000.0 POUNDS PER SQUARE INCH LBS |
| Offset Distance | 1.000 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Class | 2B ALL ENDS |
| Material | STEEL BODY |
| Thread Series Designator | UNF ALL ENDS |
| Valve Discharge Flow Rate | 8.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| 12332745 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| BML61152 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
| RA101-S20-T-6-T | 5/9 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division |
NSN 4820-01-194-9997 is a Valve,safety Relief, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-194-9997 has 1 manufacturer part number on file: 12332745 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12332745: Connection Style: GASKET SEAL(BOSS) ALL ENDS; Minimum Operating Temp: -25.0 FAHRENHEIT DEGF; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Style Designator: CAPS W/OFFSET. 15 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.