The Valve,safety Relief, cataloged under National Stock Number 4820-00-979-6418, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-979-6418 |
| Primary Part Number | X1396T30-5200 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Style Designator | ANGLE |
| Material Document and Classification | QQ-A-225/6,ALLOY2024 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 6500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +100.0 TO 5500.0 POUNDS PER SQUARE INCH LBS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Thread Quantity Per Inch | 18 ALL ENDS |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Opening Pressure Setting | 5200.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| X1396T30-5200 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| 1/4-330N-5200 | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| Reference | Meaning |
|---|---|
| X1396T30-5200 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| X1396T30-5200 | 5/9 Secondary reference Ingersoll Rand Co |
| X1396T30-5200 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| X1396T30-5200 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-979-6418 is a Valve,safety Relief, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-979-6418 has 2 manufacturer part numbers on file: X1396T30-5200 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions), 1/4-330N-5200 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
Key specifications for X1396T30-5200: Flow Control Device: DISK; Style Designator: ANGLE; Material Document and Classification: QQ-A-225/6,ALLOY2024 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Operating Pressure: 6500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 11 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.