The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-180-4863, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-180-4863 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Body Style | SINGLE CONNECTION STRAIGHT THRU |
| Material Document and Classification | QQ-B-637, ALLOY 464, SOFT FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Temp Adjustability | NOT ADJUSTABLE |
| Material | COPPER ALLOY AND ALUMINUM BODY |
| Material | COPPER ALLOY 464 FLOW CONTROL DEVICE |
| Valve Discharge Flow Rate | 115.0 CUBIC FEET PER MINUTE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 6153-110 | 3/2 Design control — primary reference U.S. Government activity |
| 4820PL1696073 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 6153-110 | 3/9 Design control — primary reference Air Dry Co of America, Llc |
NSN 4820-01-180-4863 is a Valve,relief,pressure and Temper, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-180-4863: Flow Control Device: POPPET; Body Style: SINGLE CONNECTION STRAIGHT THRU; Material Document and Classification: QQ-B-637, ALLOY 464, SOFT FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE; Temp Adjustability: NOT ADJUSTABLE. 7 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.