The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-130-1856, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pall Aeropower Corporation. Government technical data includes 5 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-130-1856 |
| Primary Part Number | AA-A424-15D8 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| Departure From Cited Document | DELETE REQUIREMENT FOR FREE FLOW IN REVERSE DIRECTION |
| Temp Adjustability | NOT ADJUSTABLE |
| Test Data Document | 81349-MIL-V-5523 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Valve Discharge Flow Rate | 29.0 GALLONS PER MINUTE |
| 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 |
|---|---|
| AA-A424-15D8 PRIMARY | Pall Aeropower Corporation (USA) |
NSN 4820-01-130-1856 is a Valve,relief,pressure and Temper, manufactured by Pall Aeropower Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-130-1856 has 1 manufacturer part number on file: AA-A424-15D8 (Pall Aeropower Corporation).
Key specifications for AA-A424-15D8: Body Style: SINGLE CONNECTION, STRAIGHT FLOW; Departure From Cited Document: DELETE REQUIREMENT FOR FREE FLOW IN REVERSE DIRECTION; Temp Adjustability: NOT ADJUSTABLE; Special Features: 4.500 IN. O/A LG;0.812 IN. MAX O/A DIA;CRACKING PRESSURE 2400 PSID,PROM100 PSID;FULL FLOW PRESSURE 2700 PSI MAX;RESEAT PRESSURE 1800 PSID MIN;TWO (2) O-RING GROOVES;ALL CHARACTERISTICS DATA PROPRIETARY IN. 5 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.