The Valve,safety Relief, cataloged under National Stock Number 4820-01-685-2027, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor. Government technical data includes 2 specifications, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-685-2027 |
| Primary Part Number | 3022-275 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor |
| Status | ACTIVE |
| Connection Type | THREADED CARTRIDGE SECOND END |
| Style Designator | SAFETY RELIEF |
| 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 |
|---|---|
| 3022-275 PRIMARY | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA) |
NSN 4820-01-685-2027 is a Valve,safety Relief, manufactured by Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-685-2027 has 1 manufacturer part number on file: 3022-275 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).
Key specifications for 3022-275: Connection Type: THREADED CARTRIDGE SECOND END; Style Designator: SAFETY RELIEF; Part Name Assigned by Controlling Agency: SAFETY RELIEF VALVE; End Item Identification: 1915-01-153-8801; VESSEL,LOGISTIC SUP. 2 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.