The Valve,safety Relief, cataloged under National Stock Number 4820-00-289-3830, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 22 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-289-3830 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Renewable Seat Ring Type | WELDED |
| Flange Face Design | RAISED WITH CURVE AND RADIUS ALL ENDS |
| Bolt Circle Nominal Diameter | 3.125 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | ANGLE FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.562 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +10.0 TO 30.0 POUNDS PER SQUARE INCH LBS |
| Bonnet Type | EXPOSED SPRING |
| Maximum Operating Temp | 775.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Second Connection Face to Centerline Distance | 3.000 INCHES IN |
| Nondefinitive Spec/std Data | 1 TYPE AND D COMPOSITION |
| Nominal Outside Diameter | 4.500 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Bolt Hole Quantity | 4 ALL ENDS |
| Bonnet Attachment Method | BOLTED |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| First Connection Face to Centerline Distance | 3.250 INCHES IN |
| Material | STEEL BODY |
| Valve Discharge Flow Rate | 185.0 POUNDS PER HOUR LBS |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| Nominal Thickness | 0.438 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 |
| Reference | Meaning |
|---|---|
| CA68S5505-1792533ALT2PC756 | 5/9 Secondary reference U.S. Government activity |
| CVL48S5501-478981ALT5PC765 | 5/9 Secondary reference U.S. Government activity |
| CA139S5501-863316PC756 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-101ALT2PC756 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-100ALT1PC756 | 5/9 Secondary reference U.S. Government activity |
| CVL48S5501-478977ALT2PC756 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-102ALT1PC765 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-102ALT1PC756 | 5/9 Secondary reference U.S. Government activity |
| 20051E51SS | C/1 Advisory reference — outside the item-of-supply concept Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| MILV20065 | 4/1 Identification reference U.S. Government activity |
| CVL48S5501-478973ALT4PC765 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-101ALT2PC765 | 5/9 Secondary reference U.S. Government activity |
| CVL48S5501-478978ALT4PC765 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-179253ALT2PC765 | 5/9 Secondary reference U.S. Government activity |
| CVL48S5501-478973ALT4PC756 | 5/9 Secondary reference U.S. Government activity |
| TY1C0MPD1150-10T030F | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| CVL48S5501-478978ALT4PC756 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-100ALT1PC765 | 5/9 Secondary reference U.S. Government activity |
| CA139S5501-863317PC756 | 5/9 Secondary reference U.S. Government activity |
| CA68S5505-94ALT2PC765 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-289-3830 is a Valve,safety Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-289-3830: Flow Control Device: DISK; Flange Shape: ROUND WITH HOLES ALL ENDS; Renewable Seat Ring Type: WELDED; Flange Face Design: RAISED WITH CURVE AND RADIUS ALL ENDS. 24 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.