The Valve,safety Relief, cataloged under National Stock Number 4820-01-067-9865, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-067-9865 |
| Primary Part Number | NMP302-1-2IN 18TO32FLGEB110XB110 |
| 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 | 2.437 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | MIL-S-15083,GRADE B MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | MIL-S-867 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.500 INCHES IN |
| Adjustable Pressure Range | +18.0 TO 32.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | INSIDE SPRING |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Second Connection Face to Centerline Distance | 3.000 INCHES IN |
| Nominal Outside Diameter | 3.562 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 3 ALL ENDS |
| Bonnet Attachment Method | UNION |
| Media for Which Designed | STEAM SECOND RESPONSE |
| Media for Which Designed | WATER, FRESH THIRD RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| First Connection Face to Centerline Distance | 3.250 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Material | STEEL 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 |
|---|---|
| NMP302-1-2IN 18TO32FLGEB110XB110 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| NMP302-1-2IN 18 TO 32 FLGE | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| NMP302-1-2IN 18 TO 32 FLGE | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
| NMP302-1-2IN 18TO32FLGEB110XB110 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| S4824-3129386 | D/9 Drawing number reference only Naval Sea Systems Command |
| NMP302-1-2IN 18 TO 32 FLGE | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| NMP302-1-2IN 18TO32FLGEB110XB110 | 5/9 Secondary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-01-067-9865 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 4820-01-067-9865 has 2 manufacturer part numbers on file: NMP302-1-2IN 18TO32FLGEB110XB110 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team), NMP302-1-2IN 18 TO 32 FLGE (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for NMP302-1-2IN 18TO32FLGEB110XB110: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 2.437 INCHES ALL ENDS IN. 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.