The Valve,safety Relief, cataloged under National Stock Number 4820-01-563-5060, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-563-5060 |
| Primary Part Number | 531-7487249 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 TAILPIECE AND 2 NUT AND 1 LEVER |
| Nominal Pipe Size Accommodated | 1.000 INCHES ALL ENDS IN |
| Connection Style | SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 1200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Adjustable Pressure Range | +1041.0 TO 1156.0 POUNDS PER SQUARE INCH LBS |
| Disk Loading Method | SPRING |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | NICKEL ALLOY 625 BODY |
| Material | NICKEL ALLOY 625 FLOW CONTROL DEVICE |
| Valve Discharge Flow Rate | 117.5 GALLONS PER MINUTE |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| 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 |
|---|---|
| 531-7487249 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 531-7487249 | 5/1 Secondary reference Parker Hannifin Corporation Div Village Marine Tech |
| 47615-3111-S17 | 5/1 Secondary reference Fluid Mechanics Valve Company |
| 47616-311-517 | 5/9 Secondary reference Fluid Mechanics Valve Company |
NSN 4820-01-563-5060 is a Valve,safety Relief, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-563-5060 has 1 manufacturer part number on file: 531-7487249 (Naval Sea Systems Command).
Key specifications for 531-7487249: Furnished Items and Quantity: 2 TAILPIECE AND 2 NUT AND 1 LEVER; Nominal Pipe Size Accommodated: 1.000 INCHES ALL ENDS IN; Connection Style: SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 14 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.