The Valve,safety Relief, cataloged under National Stock Number 4820-01-216-4046, 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 26 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-216-4046 |
| Primary Part Number | NMP1098H06G0057 |
| 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 |
| Furnished Items and Quantity | 1 LEVER |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 5.000 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 4.438 INCHES SECOND END IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Valve Size | 2.000 INCHES IN |
| Adjustable Pressure Range | +57.0 TO 64.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Specification/standard Data | 81349-MIL-V-24332 GOVERNMENT SPECIFICATION |
| Second Connection Face to Centerline Distance | 4.250 INCHES IN |
| Nondefinitive Spec/std Data | B GRADE |
| Nominal Outside Diameter | 6.125 INCHES FIRST END IN |
| Nominal Outside Diameter | 5.562 INCHES SECOND END IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 6 ALL ENDS |
| Bonnet Attachment Method | UNION |
| First Connection Face to Centerline Distance | 5.125 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.438 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 |
|---|---|
| NMP1098H06G0057 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| BBMGG05MHJ PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| 46 HO 204 M5 2IN 57T64PSI | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP-1098 | D/9 Drawing number reference only Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| BBMGG05MHJ | 5/9 Secondary reference Danco Valve Company |
| NMP1098H06G0057 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 46 HO 204 M5 2IN 57T64PSI | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| MIL-DTL-24332 | 4/1 Identification reference U.S. Government activity |
| NMP-1098 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| MIL-V-24332 | 5/9 Secondary reference U.S. Government activity |
| D51FF-05 2X2-1/2 | 5/9 Secondary reference Danco Valve Company |
| 46H0204M5 2IN 5 | C/1 Advisory reference — outside the item-of-supply concept Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-01-216-4046 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 4820-01-216-4046 has 2 manufacturer part numbers on file: NMP1098H06G0057 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), BBMGG05MHJ (Dante Valve Company).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-259-8065, 4820-01-265-2583. Verify interchangeability with system specifications before substitution.
Key specifications for NMP1098H06G0057: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Furnished Items and Quantity: 1 LEVER; Flange Face Design: PLAIN ALL ENDS. 26 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.