The Valve,safety Relief, cataloged under National Stock Number 4820-01-004-2005, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bird-Johnson Propeller Company, Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-004-2005 |
| Primary Part Number | 115632044 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Connection Style | INVERTED FLARE(TUBE) ALL ENDS |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | ANGLE |
| Nominal Outside Diameter Tube Accommodated | 0.188 INCHES ALL ENDS IN |
| Adjustable Pressure Range | +28.0 TO 35.0 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Disk Loading Method | SPRING |
| Thread Class | 2B ALL ENDS |
| Material | STEEL BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL ENDS |
| Opening Pressure Setting | 28.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 115632044 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| 115652001PC22 | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4820PL0736664 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4820-01-004-2005 is a Valve,safety Relief, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-004-2005 has 2 manufacturer part numbers on file: 115632044 (Bird-Johnson Propeller Company, Llc), 115652001PC22 (Bird-Johnson Propeller Company, Llc).
Key specifications for 115632044: Flow Control Device: BALL; Connection Style: INVERTED FLARE(TUBE) ALL ENDS; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Style Designator: ANGLE. 17 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.