The Valve,safety Relief, cataloged under National Stock Number 4820-00-360-3297, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parts Service Intl Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-360-3297 |
| Primary Part Number | 22K2R |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parts Service Intl Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | STRAIGHT THRU |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | STEEL BODY |
| 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 |
|---|---|
| 22K2R PRIMARY | Parts Service Intl Inc (USA) |
| 22K2R PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 22K2R | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 22K2R | 5/9 Secondary reference U.S. Government activity |
| 22K2R | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| 22K2 | 5/9 Secondary reference Ingersoll Rand Co |
| 22K2R | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4820-00-360-3297 is a Valve,safety Relief, manufactured by Parts Service Intl Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-360-3297 has 2 manufacturer part numbers on file: 22K2R (Parts Service Intl Inc), 22K2R (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-180-8581. Verify interchangeability with system specifications before substitution.
Key specifications for 22K2R: Flow Control Device: DISK; Style Designator: STRAIGHT THRU; Disk Loading Method: SPRING; Media for Which Designed: AIR SINGLE RESPONSE. 6 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.