The Valve,safety Relief, cataloged under National Stock Number 4820-01-597-2285, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hansen Technologies Corporation. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-597-2285 |
| Primary Part Number | H5602(3/4X1-IN FPT-250PSIG) |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hansen Technologies Corporation |
| Status | ACTIVE |
| Flow Control Device | PISTON |
| Connection Style | INVERTED FLARE(PIPE) FIRST END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Maximum Operating Temp | 240.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | AMMONIA, GASEOUS SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING STEM |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| H5602 - 250 PSIG | Hansen Technologies Corporation (USA) |
| H5602(3/4X1-IN FPT-250PSIG) PRIMARY | Hansen Technologies Corporation (USA) |
NSN 4820-01-597-2285 is a Valve,safety Relief, manufactured by Hansen Technologies Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-597-2285 has 2 manufacturer part numbers on file: H5602 - 250 PSIG (Hansen Technologies Corporation), H5602(3/4X1-IN FPT-250PSIG) (Hansen Technologies Corporation).
Key specifications for H5602(3/4X1-IN FPT-250PSIG): Flow Control Device: PISTON; Connection Style: INVERTED FLARE(PIPE) FIRST END; Connection Type: THREADED INTERNAL PIPE FIRST END; Style Designator: ANGLE. 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.