The Valve,safety Relief, cataloged under National Stock Number 4820-01-281-7372, 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 27 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-281-7372 |
| Primary Part Number | NMP-1106 OPTION L 145T162PSI |
| 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 | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 6.562 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 6.000 INCHES SECOND END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | 0.562 INCHES FIRST END IN |
| Valve Size | 2.500 INCHES IN |
| Adjustable Pressure Range | +145.0 TO 162.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Second Connection Face to Centerline Distance | 5.625 INCHES IN |
| Nominal Outside Diameter | 7.688 INCHES FIRST END IN |
| Nominal Outside Diameter | 7.500 INCHES SECOND END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 4 SECOND END |
| Bolt Hole Quantity | 8 FIRST END |
| Bonnet Attachment Method | UNION |
| First Connection Face to Centerline Distance | 6.406 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.625 INCHES SECOND END IN |
| Nominal Thickness | 0.500 INCHES FIRST END 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 |
|---|---|
| 46-H0-206/M5 OPT L 145T152PSI | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP-1106 OPTION L 145T162PSI PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| MNP-1106 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 46-H0-206/M5 OPT L 145T162PSI | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| 46-H0-206/M5 OPT L 145T152PSI | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-1106 OPTION L 145T162PSI | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP-1106 OPTION L 145T162PSI | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP-1106 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-01-281-7372 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 4820-01-281-7372 has 2 manufacturer part numbers on file: 46-H0-206/M5 OPT L 145T152PSI (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP-1106 OPTION L 145T162PSI (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for NMP-1106 OPTION L 145T162PSI: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 6.562 INCHES FIRST END IN. 27 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.