The Valve,safety Relief, cataloged under National Stock Number 4820-01-089-0696, 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 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-089-0696 |
| Primary Part Number | D44UU-06H-1/2-3/4 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Renewable Seat Ring Type | PRESSED-IN |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | SOCKET WITH BRAZING RING ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Material Document and Classification | ASTM B16 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | QQ-C-390,ALLOY D4/D/ FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | AISI 303 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | FED STD 66,AISI 304/SAE 30304 FED STD SINGLE MATERIAL RESPONSE SEAT |
| Operating Pressure | 440.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SPRING |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | INTEGRAL |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | STEEL COMP 303 STEM |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL COMP 303 SEAT |
| 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 |
|---|---|
| D44UU-06H-1/2-3/4 PRIMARY | Dante Valve Company (USA) |
| 20234-8-941SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| D44UU-06H-1/2-3/4 | 5/9 Secondary reference Danco Valve Company |
| D44UU-06 1/2 X 3/4 IN | 5/9 Secondary reference Danco Valve Company |
| MIL-V-22549 | 4/1 Identification reference U.S. Government activity |
| 20234-8-941SS | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-089-0696 is a Valve,safety Relief, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-089-0696 has 2 manufacturer part numbers on file: D44UU-06H-1/2-3/4 (Dante Valve Company), 20234-8-941SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for D44UU-06H-1/2-3/4: Flow Control Device: DISK; Renewable Seat Ring Type: PRESSED-IN; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: SOCKET WITH BRAZING RING ALL ENDS. 21 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.