The Valve,safety Relief, cataloged under National Stock Number 4820-01-566-6981, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-566-6981 |
| Primary Part Number | UCNCNN05XCCE/CD DNX62-1/2X1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Material | STEEL BODY |
| Opening Pressure Setting | 100.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| UCNCNN05XCCE/CD DNX62-1/2X1 PRIMARY | Dante Valve Company (USA) |
| DNX62-1/2X1 | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| UCNCNN05XCCE/CD DNX62-1/2X1 | 3/9 Design control — primary reference Danco Valve Company |
| DNX62-1/2X1 | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-566-6981 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-566-6981 has 2 manufacturer part numbers on file: UCNCNN05XCCE/CD DNX62-1/2X1 (Dante Valve Company), DNX62-1/2X1 (Dante Valve Company).
Key specifications for UCNCNN05XCCE/CD DNX62-1/2X1: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Connection Type: FLANGE ALL ENDS; Style Designator: ANGLE FLANGED ENDS. 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.