The Valve,safety Relief, cataloged under National Stock Number 4820-01-270-6429, 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 14 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-270-6429 |
| Primary Part Number | NMP118103G0100 |
| 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 | SOCKET (TUBE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL TUBE ALL ENDS |
| Style Designator | ANGLE |
| Adjustable Pressure Range | +92.0 TO 107.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | UNION |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| 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 |
|---|---|
| NMP-1181 OPTION- | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP118103G0100 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| DA-40D 92T107PSI | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| NMP-1181 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| DA-40D 92T107PSI,NMP1181DPT-1 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| DA-40D 92T107PS | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
| NMP-1181 OPTION-1 92T107PSI | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| DA-40D 92T107PSI, NMP1181DPT-1 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-1181 OPTION-1 92T107PSI | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-1181 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-01-270-6429 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 4820-01-270-6429 has 2 manufacturer part numbers on file: NMP-1181 OPTION- (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP118103G0100 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
1 possible match (shared part number, not a government interchangeability claim): 5360-01-287-2421. Verify interchangeability with system specifications before substitution.
Key specifications for NMP118103G0100: Flow Control Device: DISK; Connection Style: SOCKET (TUBE) ALL ENDS; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDS; Style Designator: ANGLE. 14 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.