The Valve,safety Relief, cataloged under National Stock Number 4820-00-288-6709, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-288-6709 |
| Primary Part Number | 3022-200 |
| 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 |
| Flow Control Device | POPPET |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | ANGLE |
| Operating Pressure | 200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.500 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | STEAM SECOND RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | GAS, NATURAL FOURTH RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT FIRST END |
| Opening Pressure Setting | 200.0 POUNDS PER SQUARE INCH LBS |
| Valve Discharge Flow Rate | 181.0 CUBIC FEET PER MINUTE |
| Valve Operation Method | AUTOMATIC OR MANUAL |
| 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 |
|---|---|
| 3022-200 PRIMARY | Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor (USA) |
| Reference | Meaning |
|---|---|
| 3022 | 5/9 Secondary reference Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor |
NSN 4820-00-288-6709 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 4820-00-288-6709 has 1 manufacturer part number on file: 3022-200 (Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor).
Key specifications for 3022-200: Flow Control Device: POPPET; Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Style: PLAIN (PIPE) FIRST END; Connection Type: THREADED EXTERNAL PIPE FIRST END. 17 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.