The Seat,valve, cataloged under National Stock Number 4820-01-303-1258, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Velan Valve Corp.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-303-1258 |
| Primary Part Number | 73811-13 PC.4 4INCH |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Material | STEEL OVERALL |
| Style Designator | PLAIN |
| Body Inside Diameter | 4.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 73908 PIECE 3 4IN | Velan Valve Corp. (USA) |
| 73811-13 PC.4 4INCH PRIMARY | Velan Valve Corp. (USA) |
| 73908 | Velan Valve Corp. (USA) |
| 73908 PIECE 3 4 | Velan Valve Corp. (USA) |
NSN 4820-01-303-1258 is a Seat,valve, manufactured by Velan Valve Corp., classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-303-1258 has 4 cross-referenced part numbers: 73908 PIECE 3 4IN (Velan Valve Corp.), 73811-13 PC.4 4INCH (Velan Valve Corp.), 73908 (Velan Valve Corp.), 73908 PIECE 3 4 (Velan Valve Corp.).
There are 2 known substitutes for 4820-01-303-1258: 5120-01-016-8839, 5305-01-493-2214. Verify interchangeability with system specifications before substitution.
Key specifications for 73811-13 PC.4 4INCH: Material: STEEL OVERALL; Style Designator: PLAIN; Body Inside Diameter: 4.000 INCHES NOMINAL IN. 3 total characteristics are documented in the Federal Logistics Information System.