The Valve,safety Relief, cataloged under National Stock Number 4820-01-224-5347, 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 15 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-224-5347 |
| Primary Part Number | 202327940SS |
| 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 |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | STREAMLINED WITH ONE BRAZING RING ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 3450.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +2901.0 TO 3450.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SCREW |
| Maximum Operating Temp | 165.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bonnet Attachment Method | THREADED |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Material | STEEL COMP 303 STEM |
| Material | STEEL COMP 304 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 |
|---|---|
| 202327940SS PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 20232 PART 20232 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| D41-30UU-07H-1/2-1/2 | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| D41-30UU-07H-1/2-1/2 | 5/9 Secondary reference Danco Valve Company |
| D41-30UU-07 1/2 | 5/9 Secondary reference Danco Valve Company |
| 202327940SS | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 6930HN | C/1 Advisory reference — outside the item-of-supply concept Rexnord Industries Llc Div Stearns |
| 20232 PART 202327940SS | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-224-5347 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 4820-01-224-5347 has 3 manufacturer part numbers on file: 202327940SS (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 20232 PART 20232 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), D41-30UU-07H-1/2-1/2 (Dante Valve Company).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-227-6422. Verify interchangeability with system specifications before substitution.
Key specifications for 202327940SS: Flow Control Device: DISK; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: STREAMLINED WITH ONE BRAZING RING ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 15 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.