The Seat,valve, cataloged under National Stock Number 4820-01-146-4038, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William E Williams Valve Corp. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seat,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | William E Williams Valve Corp (CAGE 79342) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-146-4038 |
| Primary Part Number | CG81029-3 2 1-2IN |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| CG81029-3 2 1-2IN PRIMARY | William E Williams Valve Corp (USA) |
| CG81029 ITEM 3 2 1-2 IN | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| CG81029 | D/9 Drawing number reference only William E Williams Valve Corp |
NSN 4820-01-146-4038 is a Seat,valve, manufactured by William E Williams Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-146-4038 has 2 manufacturer part numbers on file: CG81029-3 2 1-2IN (William E Williams Valve Corp), CG81029 ITEM 3 2 1-2 IN (William E Williams Valve Corp).
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.