The Seat,valve, cataloged under National Stock Number 4820-00-480-8203, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Falls Filtration Technologies, Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-480-8203 |
| Primary Part Number | R9W1420-113 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Falls Filtration Technologies, Inc. |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 1.548 INCHES NOMINAL IN |
| Flange Diameter | 2.625 INCHES NOMINAL IN |
| Body Outside Diameter | 1.000 INCHES NOMINAL IN |
| Seal Accommodation Type | GROOVED |
| Body Inside Diameter | 0.875 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Under Flange Height | 0.600 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Seat Angle in Deg | 30.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| R9W1420-113 PRIMARY | Falls Filtration Technologies, Inc. (USA) |
NSN 4820-00-480-8203 is a Seat,valve, manufactured by Falls Filtration Technologies, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-480-8203 has 1 manufacturer part number on file: R9W1420-113 (Falls Filtration Technologies, Inc.).
Key specifications for R9W1420-113: Flange Seat to Disk End Height: 1.548 INCHES NOMINAL IN; Flange Diameter: 2.625 INCHES NOMINAL IN; Body Outside Diameter: 1.000 INCHES NOMINAL IN; Seal Accommodation Type: GROOVED. 10 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.