The Seat,valve, cataloged under National Stock Number 4820-00-513-8148, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Automatic Switch Company Dba Asco. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-513-8148 |
| Primary Part Number | FV21-053 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Automatic Switch Company Dba Asco |
| Status | ACTIVE |
| Thread Series Designator | UNF SINGLE THREADED PORTION |
| Style Designator | THREADED FLANGED |
| Material | STEEL CORROSION RESISTING OVERALL |
| Nominal Thread Size | 0.438 INCHES SINGLE THREADED PORTION IN |
| Body Inside Diameter | 0.125 INCHES NOMINAL IN |
| Seal Accommodation Type | GROOVED |
| Seating Surface Shape | FLAT |
| Under Flange Height | 0.375 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Thread Length | 0.125 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Flange Diameter | 0.562 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 0.094 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3278953PC43 | Naval Ship Systems Command (USA) |
| GV63-360REVAPC43 | Automatic Switch Company Dba Asco (USA) |
| 597-200-1886964REVAPC43 | Naval Sea Systems Command (USA) |
| 3278953PC43 | Naval Sea Systems Command (USA) |
| 597-200-1886964REVAPC43 | Naval Ship Systems Command (USA) |
| 578-4900-1674753REVAPC43 | Naval Sea Systems Command (USA) |
| 576-4824-1506685REVAPC43 | Naval Sea Systems Command (USA) |
| 578-4824-1674712REVAPC43 | Naval Sea Systems Command (USA) |
| GV52-237REVAPC43 | Automatic Switch Company Dba Asco (USA) |
| 578-4824-1674712REVAPC43 | Naval Ship Systems Command (USA) |
| 21-053 | Automatic Switch Company Dba Asco (USA) |
| GV52-816REVAPC43 | Automatic Switch Company Dba Asco (USA) |
| 578-4900-1674753REVAPC43 | Naval Ship Systems Command (USA) |
| 576-4824-1506685REVAPC43 | Naval Ship Systems Command (USA) |
| FV21-053 PRIMARY | Automatic Switch Company Dba Asco (USA) |
| GV48-519REVAPC43 | Automatic Switch Company Dba Asco (USA) |
NSN 4820-00-513-8148 is a Seat,valve, manufactured by Automatic Switch Company Dba Asco, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-513-8148 has 16 cross-referenced part numbers: 3278953PC43 (Naval Ship Systems Command), GV63-360REVAPC43 (Automatic Switch Company Dba Asco), 597-200-1886964REVAPC43 (Naval Sea Systems Command), 3278953PC43 (Naval Sea Systems Command), 597-200-1886964REVAPC43 (Naval Ship Systems Command) and 11 more.
There are 7 known substitutes for 4820-00-513-8148: 5895-00-027-6780, 3110-00-142-4390, 4130-00-367-2414 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for FV21-053: Thread Series Designator: UNF SINGLE THREADED PORTION; Style Designator: THREADED FLANGED; Material: STEEL CORROSION RESISTING OVERALL; Nominal Thread Size: 0.438 INCHES SINGLE THREADED PORTION IN. 12 total characteristics are documented in the Federal Logistics Information System.