The Valve,safety Relief, cataloged under National Stock Number 4820-01-422-0897, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Evac North America Inc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-422-0897 |
| Primary Part Number | 3600084 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Evac North America Inc |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY. |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| FIG 10-2 PC-55 | Evac North America Inc (USA) |
| 3600084 PRIMARY | Evac North America Inc (USA) |
| Reference | Meaning |
|---|---|
| FIG 10-2 PC-55 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
| 3600084 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
NSN 4820-01-422-0897 is a Valve,safety Relief, manufactured by Evac North America Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-422-0897 has 2 manufacturer part numbers on file: FIG 10-2 PC-55 (Evac North America Inc), 3600084 (Evac North America Inc).
Key specifications for 3600084: Style Designator: STRAIGHT THRU NOTE: TO BE USED FOR VALVE BODIES OF ONE SECTION ONLY.; Nominal Thread Size: 0.750 INCHES ALL ENDS IN; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Valve Operation Method: AUTOMATIC. 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.