The Valve,safety Relief, cataloged under National Stock Number 4820-00-289-4359, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-289-4359 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST ENDROUND WITH HOLES FIRST END |
| Flange Shape | ROUND WITH HOLES SECOND ENDROUND WITH HOLES SECOND END |
| Furnished Items and Quantity | 1 SIGHT GAGE |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Flange Face Design | RAISED STRAIGHT SECOND ENDRAISED STRAIGHT FIRST END |
| Bolt Circle Nominal Diameter | 11.750 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 11.750 INCHES SECOND END13.438 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND ENDFLANGE SECOND END |
| Connection Type | FLANGE FIRST ENDFLANGE FIRST END |
| Style Designator | ANGLE |
| Bolt Hole Nominal Diameter | 0.875 INCHES SECOND END IN |
| Bolt Hole Nominal Diameter | 0.875 INCHES SECOND END0.812 INCHES FIRST END IN |
| Operating Pressure | 33.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +21.0 TO 27.0 POUNDS PER SQUARE INCH+21.0 TO 27.0 POUNDS PER SQUARE INCH LBS |
| Maximum Operating Temp | 330.0 FAHRENHEIT SINGLE RESPONSE330.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 13.500 INCHES SECOND END IN |
| Nominal Outside Diameter | 13.500 INCHES SECOND END15.000 INCHES FIRST END IN |
| Disk Loading Method | SPRINGSPRING |
| Bolt Hole Quantity | 15 FIRST END15 FIRST END |
| Bolt Hole Quantity | 8 SECOND END8 SECOND END |
| Material | STEEL CORROSION RESISTING STEM |
| Material | STEEL CORROSION RESISTING STEMSTEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICESTEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING SEATSTEEL BODY |
| Raised Face Nominal Diameter | 10.625 INCHES SECOND END IN |
| Valve Discharge Flow Rate | 51500.0 POUNDS PER HOUR51500.0 POUNDS PER HOUR LBS |
| Raised Face Nominal Height | 0.625 INCHES SECOND 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 |
| Reference | Meaning |
|---|---|
| NMP354 | 3/9 Design control — primary reference Kunkle Industries Inc Lonergan Valve Div |
NSN 4820-00-289-4359 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-289-4359: Flange Shape: ROUND WITH HOLES FIRST ENDROUND WITH HOLES FIRST END; Flange Shape: ROUND WITH HOLES SECOND ENDROUND WITH HOLES SECOND END; Furnished Items and Quantity: 1 SIGHT GAGE; Flange Face Design: RAISED STRAIGHT SECOND END. 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.