The Disk,valve, cataloged under National Stock Number 4820-01-107-2164, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-107-2164 |
| Primary Part Number | 7532-004-002 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Shoulder Width | 0.312 INCHES NOMINAL IN |
| Shoulder Height | 0.719 INCHES NOMINAL IN |
| Outside Diameter | 3.210 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Nominal Thread Size | 1.750 INCHES IN |
| Seat Radius | 0.250 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL |
| Thread Series Designator | UN |
| 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 |
|---|---|
| 7532-004-002 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 73423A PIECE4 3 | C/1 Advisory reference — outside the item-of-supply concept Velan Valve Corp. |
| 73423A | D/9 Drawing number reference only Velan Valve Corp. |
| 7532-4-31 | 5/9 Secondary reference Velan Valve Corp. |
NSN 4820-01-107-2164 is a Disk,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-107-2164 has 1 manufacturer part number on file: 7532-004-002 (Velan Valve Corp.).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-111-4858. Verify interchangeability with system specifications before substitution.
Key specifications for 7532-004-002: Overall Height: 1.469 INCHES NOMINAL IN; Shoulder Width: 0.312 INCHES NOMINAL IN; Shoulder Height: 0.719 INCHES NOMINAL IN; Outside Diameter: 3.210 INCHES NOMINAL IN. 10 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.