The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-473-4204, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ausco Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Ausco Inc (CAGE 06239); Ametek Thermal Systems Inc (CAGE 12536) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-473-4204 |
| Primary Part Number | A650 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ausco Inc |
| 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 |
NSN 4820-01-473-4204 is a Valve,relief,pressure and Temper, manufactured by Ausco Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-473-4204 has 2 manufacturer part numbers on file: A650 (Ausco Inc), 60204-002 (Ametek Thermal Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 6210-01-610-2575. 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.