The Valve,safety Relief, cataloged under National Stock Number 4820-01-249-9964, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 3 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-249-9964 |
| Primary Part Number | 20356A01C2901 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Adjustable Pressure Range | +2901.0 TO 4000.0 POUNDS PER SQUARE INCH LBS |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| D41P-30UU-08H-1/2-1/2 | Dante Valve Company (USA) |
| 20356A01C2901 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| D41P-30UU-08 1/2 IN | 5/9 Secondary reference Danco Valve Company |
| 203567940SS 1-2 | C/1 Advisory reference — outside the item-of-supply concept Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| D41P-30UU-08H-1/2-1/2 | 5/9 Secondary reference Danco Valve Company |
| 20356A01C2901 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 203567940SS 1/2IN | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-249-9964 is a Valve,safety Relief, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-249-9964 has 2 manufacturer part numbers on file: D41P-30UU-08H-1/2-1/2 (Dante Valve Company), 20356A01C2901 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for 20356A01C2901: Adjustable Pressure Range: +2901.0 TO 4000.0 POUNDS PER SQUARE INCH LBS; Special Features: VALVE SZ 0.500 IN. IN; End Item Identification: USNS HENRY J. KAISER CLASS TAO; Material: STEEL CORROSION RESISTING BODY. 3 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.