The Valve,safety Relief, cataloged under National Stock Number 4820-01-263-3047, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-263-3047 |
| Primary Part Number | DA-70A-NMP1188-SET1140-3/8X3/4IN |
| 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 |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Style | STREAMLINED WITH ONE BRAZING RING (TUBE) SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Style Designator | ANGLE |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES FIRST END IN |
| Adjustable Pressure Range | +1031.0 TO 1210.0 POUNDS PER SQUARE INCH LBS |
| Disk Loading Method | SPRING |
| Material | COPPER ALLOY BODY |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Material | STEEL COMP 303 STEM |
| Valve Discharge Flow Rate | 833.0 CUBIC FEET PER MINUTE |
| 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 |
|---|---|
| DA-70A-NMP1188-SET1140-3/8X3/4IN PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 8503972-1-2-3-4 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| DA-70A-NMP1188-SET1140-3/8X3/4IN | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| DA-70A-NMP1188-SET1140-3/8X3/4IN | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-01-263-3047 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 4820-01-263-3047 has 1 manufacturer part number on file: DA-70A-NMP1188-SET1140-3/8X3/4IN (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for DA-70A-NMP1188-SET1140-3/8X3/4IN: Flow Control Device: DISK; Connection Style: PLAIN (TUBE) FIRST END; Connection Style: STREAMLINED WITH ONE BRAZING RING (TUBE) SECOND END; Connection Type: UNTHREADED EXTERNAL TUBE FIRST END. 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.