The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-669-1891, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950); Rix Industries (CAGE 28953) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-669-1891 |
| Primary Part Number | D40UU-04H-1/2-1/2 OXYGEN CLEANCP |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| D40UU-04H-1/2-1/2 OXYGEN CLEANCP | Naval Inventory Control Point Mechanicsburg (USA) |
| XM515-7730-65CP | Naval Inventory Control Point Mechanicsburg (USA) |
| XM515-7730-65 | Rix Industries (USA) |
| 074-1407 ITEM 1CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| D40UU-04H-1/2-1/2 OXYGEN CLEAN | 3/1 Design control — primary reference Dante Valve Company |
| 074-1407 ITEM 1 | 5/1 Secondary reference Rix Industries |
NSN 4820-01-669-1891 is a Valve,relief,pressure and Temper, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-669-1891 has 4 manufacturer part numbers on file: D40UU-04H-1/2-1/2 OXYGEN CLEANCP (Naval Inventory Control Point Mechanicsburg), XM515-7730-65CP (Naval Inventory Control Point Mechanicsburg), XM515-7730-65 (Rix Industries), 074-1407 ITEM 1CP (Naval Inventory Control Point Mechanicsburg).
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.