The Seat,valve, cataloged under National Stock Number 4820-01-691-1687, 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 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-691-1687 |
| Primary Part Number | 176-935-030-362-024 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp |
| Status | ACTIVE |
| Material Document and Classification | ASTM-A-276 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | ASTM-A-313 ASSN STD SINGLE MATERIAL RESPONSE FACE |
| Material | STEEL COMP 316 SEAT |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE FLANGE |
| Material | STEEL COMP 302 FACE |
| 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 |
|---|---|
| 176-935-030-362-024 PRIMARY | Emerson Automation Solutions Final Control Us Lp (USA) |
| D362-033-3-143 REV A ITEM 34 | Emerson Automation Solutions Final Control Us Lp (USA) |
NSN 4820-01-691-1687 is a Seat,valve, manufactured by Emerson Automation Solutions Final Control Us Lp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-691-1687 has 2 manufacturer part numbers on file: 176-935-030-362-024 (Emerson Automation Solutions Final Control Us Lp), D362-033-3-143 REV A ITEM 34 (Emerson Automation Solutions Final Control Us Lp).
Key specifications for 176-935-030-362-024: Material Document and Classification: ASTM-A-276 ASSN STD SINGLE MATERIAL RESPONSE SEAT; Material Document and Classification: ASTM-A-313 ASSN STD SINGLE MATERIAL RESPONSE FACE; Part Name Assigned by Controlling Agency: SEAT ASSEMBLY; End Item Identification: VALVE ASSEMBLY 143-703-030-362-033. 5 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.