The Valve,safety Relief, cataloged under National Stock Number 4820-00-287-4622, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Jayco Incorporated. Government technical data includes 24 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through both NSN and commercial part number lookups. 49 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-287-4622 |
| Primary Part Number | 1/2IN-150-132PSIG-AIR |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Jayco Incorporated |
| Status | ACTIVE |
| Flow Control Device | DISK OR STEM |
| Nominal Pipe Size Accommodated | 0.500 INCHES SECOND END IN |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | PLAIN,OPTIONAL END(PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Operating Pressure | 132.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Features Provided | VALVE STEM LOCK SHIELD AND PRESSURE TIGHT OUTLET SIDE |
| Bonnet Type | INSIDE SPRING |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Bonnet Attachment Method | THREADED |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | STEEL STEM |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | NPT FIRST END |
| Opening Pressure Setting | 132.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 1/2IN-150-132PSIG-AIR PRIMARY | Jayco Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 435-4900-235389PCV17 | 5/1 Secondary reference Naval Sea Systems Command |
| 435-4900-235363PCV27 | 5/9 Secondary reference U.S. Government activity |
| 413-292PCV13 | 5/1 Secondary reference U.S. Government activity |
| 362-4900-795756PCV876 | 5/1 Secondary reference Naval Sea Systems Command |
| 2476-437PCV30 | 5/9 Secondary reference U.S. Government activity |
| 282-4900-801751PCV19 | 5/9 Secondary reference U.S. Government activity |
| 362-4900-795756PCV45 | 5/9 Secondary reference U.S. Government activity |
| 435-4900-235363PCV50 | 5/9 Secondary reference U.S. Government activity |
| 2476-453PCV17 | 5/9 Secondary reference U.S. Government activity |
| 362-4900-795693PCV28 | 5/1 Secondary reference Naval Sea Systems Command |
| 490160CSPCV13 | 5/9 Secondary reference U.S. Government activity |
| 362-4900-795756PCV45 | 5/1 Secondary reference Naval Sea Systems Command |
| 435-4900-235363PCV50 | 5/1 Secondary reference Naval Sea Systems Command |
| 386381PCV27 | 5/9 Secondary reference U.S. Government activity |
| 1227 1-2X76-175 | 5/9 Secondary reference Lunkenheimer Co |
| 490986PCV13 | 5/9 Secondary reference U.S. Government activity |
| 2476-483PCV28 | 5/9 Secondary reference U.S. Government activity |
| 490986CSPCV13 | 5/9 Secondary reference U.S. Government activity |
| 2476-427PCV27 | 5/9 Secondary reference U.S. Government activity |
| 547P13PCV13 | 5/9 Secondary reference Cramp Shipbuilding and Drydock Co |
NSN 4820-00-287-4622 is a Valve,safety Relief, manufactured by Jayco Incorporated, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-287-4622 has 1 manufacturer part number on file: 1/2IN-150-132PSIG-AIR (Jayco Incorporated).
Key specifications for 1/2IN-150-132PSIG-AIR: Flow Control Device: DISK OR STEM; Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: PLAIN,OPTIONAL END(PIPE) FIRST END. 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.