The Ball,valve,ported, cataloged under National Stock Number 4820-01-443-3873, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is B N L Industries Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-443-3873 |
| Primary Part Number | 502-AC-06-0001-A01V |
| Item Name | Ball,valve,ported |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | B N L Industries Inc |
| Status | ACTIVE |
| Port Diameter | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Spherical Diameter | 1.741 INCHES NOMINAL IN |
| Port Configuration | STRAIGHT |
| Stem Accommodation Quantity | 1 |
| Port Quantity | 2 |
| Material Document and Classification | QQ-S-763, CLASS 316, COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Material | STEEL COMP 316 |
| 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 |
|---|---|
| 502-AC-06-0001-A01V PRIMARY | B N L Industries Inc (USA) |
| HBVS2-06-0003-01 | B N L Industries Inc (USA) |
| 803-5001003-X4XX-3B PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-5001003-B431-03 | 5/9 Secondary reference Naval Sea Systems Command |
| 5001003 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-443-3873 is a Ball,valve,ported, manufactured by B N L Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-443-3873 has 3 manufacturer part numbers on file: 502-AC-06-0001-A01V (B N L Industries Inc), HBVS2-06-0003-01 (B N L Industries Inc), 803-5001003-X4XX-3B (Naval Sea Systems Command).
Key specifications for 502-AC-06-0001-A01V: Port Diameter: 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN; Spherical Diameter: 1.741 INCHES NOMINAL IN; Port Configuration: STRAIGHT; Stem Accommodation Quantity: 1. 7 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.