The Seat,valve, cataloged under National Stock Number 4820-01-484-4747, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-484-4747 |
| Primary Part Number | 51145-J-183 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
| Status | ACTIVE |
| Seal Accommodation Type | RECESSED |
| Material Document and Classification | ASTM-A494 GR. -30-C OR GR. -30-H ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | NICKEL ALLOY SEAT |
| 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 |
|---|---|
| 1305-034-200 ITEM 13 | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| 51145-J-183 PRIMARY | Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1305-034 | D/9 Drawing number reference only Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc |
NSN 4820-01-484-4747 is a Seat,valve, manufactured by Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-484-4747 has 2 manufacturer part numbers on file: 1305-034-200 ITEM 13 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc), 51145-J-183 (Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc).
Key specifications for 51145-J-183: Seal Accommodation Type: RECESSED; Material Document and Classification: ASTM-A494 GR. -30-C OR GR. -30-H ASSN STD SINGLE MATERIAL RESPONSE SEAT; Special Features: QTY REQUIRED 2 PER VALVE; End Item Identification: NSN 4820-01-484-4422 CAGE 76364 P/N 1305-034-200 GATE VALVE (2 INCH) IN. 3 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.