The Valve,safety Relief, cataloged under National Stock Number 4820-01-388-4635, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (CAGE 65586) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-388-4635 |
| Primary Part Number | 344-302033-003 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, 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 |
| Part Number | Manufacturer |
|---|---|
| 344-302033-003 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
NSN 4820-01-388-4635 is a Valve,safety Relief, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-388-4635 has 1 manufacturer part number on file: 344-302033-003 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
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.