The Arm,disk, cataloged under National Stock Number 4820-01-225-6919, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Arm,disk |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (CAGE 04537) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-225-6919 |
| Primary Part Number | 33546-614-3034-000 |
| Item Name | Arm,disk |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
| Status | ACTIVE |
| 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 |
|---|---|
| 33546-614-3034-000 PRIMARY | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| 15230-01 LINE 2 | Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA) |
| Reference | Meaning |
|---|---|
| 15230-01 | D/9 Drawing number reference only Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa |
NSN 4820-01-225-6919 is a Arm,disk, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-225-6919 has 2 manufacturer part numbers on file: 33546-614-3034-000 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa), 15230-01 LINE 2 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-225-9155, 4820-01-226-3240, 5306-01-516-5747. Verify interchangeability with system specifications before substitution.
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.