The Valve,safety Relief, cataloged under National Stock Number 4820-01-308-8288, 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 23 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-308-8288 |
| Primary Part Number | NH101,NMP1039 5T |
| 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 |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 3.875 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.625 INCHES ALL ENDS IN |
| Valve Size | 1.500 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Second Connection Face to Centerline Distance | 3.500 INCHES IN |
| Nominal Outside Diameter | 5.000 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Bonnet Attachment Method | BOLTED |
| First Connection Face to Centerline Distance | 3.750 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL COMP 303 FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Raised Face Nominal Diameter | 2.875 INCHES ALL ENDS IN |
| Opening Pressure Setting | 8.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| Raised Face Nominal Height | 0.438 INCHES FIRST END IN |
| Raised Face Nominal Height | 0.062 INCHES SECOND END IN |
| Nominal Thickness | 0.562 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 |
|---|---|
| NMP-1-39 1-1/2IN | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NH101,NMP1039 5T PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| NH101,NMP1039 5T10PSI 8PSI SET | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NH101,NMP1039 5T10PSI 8PSI SET | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP-1039 1-1/2IN 8PSI SET | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP-1-39 1-1/2IN 8PSI SET | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
NSN 4820-01-308-8288 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 4820-01-308-8288 has 2 manufacturer part numbers on file: NMP-1-39 1-1/2IN (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NH101,NMP1039 5T (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for NH101,NMP1039 5T: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 3.875 INCHES ALL ENDS IN. 23 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.