The Valve,safety Relief, cataloged under National Stock Number 4820-01-719-4546, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker-Hannifin Corp Div Instrumentation Products Division. 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 | 4820-01-719-4546 |
| Primary Part Number | 4M4F-RH4A-VT-SS-K6 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker-Hannifin Corp Div Instrumentation Products Division |
| Status | ACTIVE |
| Connection Style | PLAIN,OPTIONAL END(PIPE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Operating Pressure | 4000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +3000.0 TO 4000.0 POUNDS PER SQUARE INCH GAGE LBS |
| Features Provided | ADJUSTABLE ROTATION STOP |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Material | STEEL COMP 316 BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 4M4F-RH4A-VT-SS-K6 PRIMARY | Parker-Hannifin Corp Div Instrumentation Products Division (USA) |
NSN 4820-01-719-4546 is a Valve,safety Relief, manufactured by Parker-Hannifin Corp Div Instrumentation Products Division, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-719-4546 has 1 manufacturer part number on file: 4M4F-RH4A-VT-SS-K6 (Parker-Hannifin Corp Div Instrumentation Products Division).
Key specifications for 4M4F-RH4A-VT-SS-K6: Connection Style: PLAIN,OPTIONAL END(PIPE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Connection Type: THREADED INTERNAL PIPE SECOND END; Connection Type: THREADED EXTERNAL PIPE FIRST END. 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.