The Valve,safety Relief, cataloged under National Stock Number 4820-01-006-1395, 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 30 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-006-1395 |
| Primary Part Number | L2114C-1-1/2INSET25PSI NICUT |
| 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 Shape | ROUND WITH HOLES ALL ENDS |
| Renewable Seat Ring Type | THREADED |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.875 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | QQ-C-390,ALLOY D4/D FED SPEC 1ST MATERIAL RESPONSE BODY |
| Material Document and Classification | QQ-C-390,ALLOY D4/D FED SPEC 3RD MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-N-281,CLASS A FED SPEC 4TH MATERIAL RESPONSE STEM |
| Material Document and Classification | QQ-N-288,COMP A FED SPEC 2ND MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 1.500 INCHES IN |
| Bonnet Type | INSIDE SPRING |
| Maximum Operating Temp | 425.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Second Connection Face to Centerline Distance | 4.250 INCHES IN |
| Nominal Outside Diameter | 5.000 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 6 ALL ENDS |
| Bonnet Attachment Method | UNION |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 3.750 INCHES IN |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY 922 BODY |
| Material | NICKEL ALLOY 400 STEM |
| Material | COPPER ALLOY 922 SEAT |
| Opening Pressure Setting | 25.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.500 INCHES ALL ENDS IN |
| 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 |
|---|---|
| NMP129 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| L2114C-1-1/2INSET25PSI NICUT PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| L2114C-1-1/2INSET25PSI NICUT | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP129 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| L2114C1 1-2INSET | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP129 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| L2114C-1-1/2INSET25PSI NICUT | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-006-1395 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 4820-01-006-1395 has 2 manufacturer part numbers on file: NMP129 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), L2114C-1-1/2INSET25PSI NICUT (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for L2114C-1-1/2INSET25PSI NICUT: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Renewable Seat Ring Type: THREADED; Flange Face Design: PLAIN ALL ENDS. 30 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.