The Seat,valve, cataloged under National Stock Number 4820-00-016-0253, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Emerson Automation Solutions Final Control Us Lp. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-016-0253 |
| Primary Part Number | 206-330-660-000 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Body Outside Diameter | 9.532 INCHES NOMINAL IN |
| Seal Accommodation Type | RECESSED |
| Style Designator | PLAIN |
| Body Inside Diameter | 7.626 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 206-330-660-000 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| Reference | Meaning |
|---|---|
| 206-330-660 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
| 304-206-330-660-000 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
| 206-33-660 | 5/9 Secondary reference Emerson Automation Solutions Final Control Us Lp |
NSN 4820-00-016-0253 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-016-0253 has 1 manufacturer part number on file: 206-330-660-000 (Emerson Automation Solutions Final Control Us Lp).
Key specifications for 206-330-660-000: Overall Height: 2.500 INCHES NOMINAL IN; Body Outside Diameter: 9.532 INCHES NOMINAL IN; Seal Accommodation Type: RECESSED; Style Designator: PLAIN. 6 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.