The Seat,valve, cataloged under National Stock Number 4820-01-107-2354, 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 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-107-2354 |
| Primary Part Number | 7542-001-002 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Body Outside Diameter | 3.562 INCHES NOMINAL IN |
| Body Inside Diameter | 2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 7542-001-002 PRIMARY | Velan Valve Corp. (USA) |
| 73423A PIECE 3 3IN | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| 73423A PIECE3 3 | C/1 Advisory reference — outside the item-of-supply concept Velan Valve Corp. |
| 7542-1-31 | 5/9 Secondary reference Velan Valve Corp. |
| 73423A PIECE 3 | C/1 Advisory reference — outside the item-of-supply concept Velan Valve Corp. |
| 73423-30 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-107-2354 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-107-2354 has 2 manufacturer part numbers on file: 7542-001-002 (Velan Valve Corp.), 73423A PIECE 3 3IN (Velan Valve Corp.).
Key specifications for 7542-001-002: Overall Height: 0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN; Body Outside Diameter: 3.562 INCHES NOMINAL IN; Body Inside Diameter: 2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN; Special Features: WITH STELLITE NO. 6. 4 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.