The Valve,ball, cataloged under National Stock Number 4820-01-525-3576, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Systems Company Dba Allied Systems Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-525-3576 |
| Primary Part Number | 245503 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allied Systems Company Dba Allied Systems Co |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | 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 |
|---|---|
| BV-003-T-2 1/2 | W. & O. Supply, Inc. Div Seattle (USA) |
| 245503 PRIMARY | Allied Systems Company Dba Allied Systems Co (USA) |
| Reference | Meaning |
|---|---|
| 47333 REV F ITEM 13 | 5/1 Secondary reference Allied Systems Company Dba Allied Systems Co |
| 47333 | D/9 Drawing number reference only Allied Systems Company Dba Allied Systems Co |
NSN 4820-01-525-3576 is a Valve,ball, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-525-3576 has 2 manufacturer part numbers on file: BV-003-T-2 1/2 (W. & O. Supply, Inc. Div Seattle), 245503 (Allied Systems Company Dba Allied Systems Co).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-525-3601, 5325-01-526-7251. Verify interchangeability with system specifications before substitution.
Key specifications for 245503: Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Part Name Assigned by Controlling Agency: 2 1/2 INCH BALL VALVE IN; End Item Identification: HPU TANK ASSEMBLY. 3 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.