The Seat,valve, cataloged under National Stock Number 4820-01-331-0593, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Waukesha Bearings Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-0593 |
| Primary Part Number | 01-532-2/1200-194-1-4 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Waukesha Bearings Corporation |
| Status | ACTIVE |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 01-532-2/1200-194-1-4 PRIMARY | Waukesha Bearings Corporation (USA) |
| Reference | Meaning |
|---|---|
| 01-532-2/1200-1 | D/9 Drawing number reference only Waukesha Bearings Corporation |
NSN 4820-01-331-0593 is a Seat,valve, manufactured by Waukesha Bearings Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-0593 has 1 manufacturer part number on file: 01-532-2/1200-194-1-4 (Waukesha Bearings Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-331-0594. Verify interchangeability with system specifications before substitution.
Key specifications for 01-532-2/1200-194-1-4: Material: COPPER ALLOY OVERALL. 1 specification is 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.