The Seat,valve, cataloged under National Stock Number 4820-00-308-9890, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Walworth Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-308-9890 |
| Primary Part Number | 9520-21-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | The Walworth Company |
| Status | CANCELLED |
| Seat Angle in Deg | 12.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Material | STEEL OVERALL |
| Body Outside Diameter | 4.182 INCHES NOMINAL IN |
| Body Inside Diameter | 3.700 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 9520-21-1 PRIMARY | The Walworth Company (USA) |
| F3191930ASL2PC5 | Naval Ship Systems Command (USA) |
| N10915SL2PC5 | Walworth Co the (USA) |
| 9520-21-1 | Walworth Co the (USA) |
NSN 4820-00-308-9890 is a Seat,valve, manufactured by The Walworth Company, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-308-9890 has 4 cross-referenced part numbers: 9520-21-1 (The Walworth Company), F3191930ASL2PC5 (Naval Ship Systems Command), N10915SL2PC5 (Walworth Co the), 9520-21-1 (Walworth Co the).
There is 1 known substitute for 4820-00-308-9890: 5330-01-119-4403. Verify interchangeability with system specifications before substitution.
Key specifications for 9520-21-1: Seat Angle in Deg: 12.000 NOMINAL; Seating Surface Shape: ANGULAR; Surface Treatment: ANODIZE OVERALL; Material: STEEL OVERALL. 8 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-308-9890 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.