The Valve,return, cataloged under National Stock Number 4820-01-370-2425, 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 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-370-2425 |
| Primary Part Number | AD-B741-24D422 |
| Item Name | Valve,return |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pall Aeropower Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | DIMENSIONS: HEIGHT 2.495 IN.; IN-SIDE DIA; 2.600 IN.; SPECIAL FEATURE: WITH LEVER/SPRING IN |
| 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 |
|---|---|
| AD-B741-24D422 PRIMARY | Pall Aeropower Corporation (USA) |
| Reference | Meaning |
|---|---|
| DAA3252P066-223 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
NSN 4820-01-370-2425 is a Valve,return, manufactured by Pall Aeropower Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-370-2425 has 1 manufacturer part number on file: AD-B741-24D422 (Pall Aeropower Corporation).
Key specifications for AD-B741-24D422: General Characteristics Item Description: DIMENSIONS: HEIGHT 2.495 IN.; IN-SIDE DIA; 2.600 IN.; SPECIAL FEATURE: WITH LEVER/SPRING IN; End Item Identification: PACER SPECIAL. 1 specification is 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.