The Seat,valve, cataloged under National Stock Number 4820-01-171-4433, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-171-4433 |
| Primary Part Number | 27425-33 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Thread Class | 3A SINGLE THREADED PORTION A |
| Under Flange Height | 0.625 INCHES NOMINAL IN |
| Thread Series Designator | UNS SINGLE THREADED PORTION |
| Material | STEEL OVERALL |
| Style Designator | THREADED FLANGED |
| Seal Accommodation Type | GROOVED |
| Flange Diameter | 2.750 INCHES NOMINAL IN |
| Body Inside Diameter | 2.000 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Nominal Thread Size | 2.500 INCHES SINGLE THREADED PORTION IN |
| Seating Surface Shape | FLAT |
| Flange Seat to Disk End Height | 0.500 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 14 SINGLE THREADED PORTION |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 27425 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| 27425-33 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| PL4197 ITEM 30 | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
NSN 4820-01-171-4433 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-171-4433 has 3 cross-referenced part numbers: 27425 (Leslie Controls, Inc. Dba Leslie Controls Inc), 27425-33 (Leslie Controls, Inc. Dba Leslie Controls Inc), PL4197 ITEM 30 (Leslie Controls, Inc. Dba Leslie Controls Inc).
There are 4 known substitutes for 4820-01-171-4433: 5305-00-412-5685, 5330-00-663-4357, 5360-00-741-3284 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 27425-33: Thread Class: 3A SINGLE THREADED PORTION A; Under Flange Height: 0.625 INCHES NOMINAL IN; Thread Series Designator: UNS SINGLE THREADED PORTION; Material: STEEL OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.