The Seat,valve, cataloged under National Stock Number 4820-00-531-4246, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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 | 4820-00-531-4246 |
| Primary Part Number | 405621 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Seating Surface Shape | RADIAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-00-531-4246 is a Seat,valve, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-531-4246 has 3 cross-referenced part numbers: 405621 (Rtx Corporation Div Pratt & Whitney), 405621 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 405621 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
There are 2 known substitutes for 4820-00-531-4246: 3110-00-100-3590, 3110-00-144-9004. Verify interchangeability with system specifications before substitution.
Key specifications for 405621: End Item Identification: CHECK VALVE ASSY 406376; Special Features: SEAT FOR CHECK VALVE PISTON P/N 212490; Seating Surface Shape: RADIAL. 3 total characteristics are documented in the Federal Logistics Information System.