The Valve,thermal Relief, cataloged under National Stock Number 4820-01-056-9712, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-056-9712 |
| Item Name | Valve,thermal Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | 2.042 IN. MIN.,2.082 IN. MAX.LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4820PL1626793 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 36380-8 | 3/2 Design control — primary reference U.S. Government activity |
| 16VH020-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-056-9712 is a Valve,thermal Relief, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-056-9712: General Characteristics Item Description: 2.042 IN. MIN.,2.082 IN. MAX.LG IN. 1 specification is 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.
NSN 4820-01-056-9712 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.