The Valve,safety Relief, cataloged under National Stock Number 4820-01-434-6640, 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 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-434-6640 |
| Primary Part Number | 4XPX6 JLT-JOS-15-D/84721000 |
| 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 |
| Flange Face Design | PLAIN ALL ENDS |
| Connection Type | FLANGE ALL ENDS |
| Maximum Operating Temp | 450.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | STEEL CORROSION RESISTING BODY |
| Opening Pressure Setting | 38.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 84721000 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 4XPX6 JLT-JOS-15-D 38PSI | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| 4XPX6 JLT-JOS-15-D/84721000 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
NSN 4820-01-434-6640 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 4820-01-434-6640 has 3 manufacturer part numbers on file: 84721000 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 4XPX6 JLT-JOS-15-D 38PSI (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), 4XPX6 JLT-JOS-15-D/84721000 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for 4XPX6 JLT-JOS-15-D/84721000: Flow Control Device: DISK; Flange Face Design: PLAIN ALL ENDS; Connection Type: FLANGE ALL ENDS; Maximum Operating Temp: 450.0 FAHRENHEIT SINGLE RESPONSE DEGF. 7 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.