The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-366-9979, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Pacific Consolidated Industries Llc. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-366-9979 |
| Primary Part Number | 580652-003 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Pacific Consolidated Industries Llc |
| Status | ACTIVE |
| First End Thread Series Designator | NPT |
| Temp Rating | 365.0 FAHRENHEIT DEGF |
| Body Style | SINGLE CONNECTION, STRAIGHT FLOW |
| First End Style Designator | EXTERNAL SEAT FOR GASKET SEAL |
| End Connection Quantity | 1 |
| First End Connection Type | THREADED EXTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.375 INCHES IN |
| Material | COPPER ALLOY BODY |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 580652-003 | Pacific Consolidated Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| VB8-38-BR-T-S-E | 3/9 Design control — primary reference Kadant Johnson Inc. Dba (formely: Johnson Corporation, The) |
| PL-1152-00-C IT | C/1 Advisory reference — outside the item-of-supply concept Engineered Coil Company Dba Engineered Coil Co Div Drs Marlo Coil |
NSN 4820-01-366-9979 is a Valve,vacuum Breaking, manufactured by Pacific Consolidated Industries Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-366-9979 has 1 manufacturer part number on file: 580652-003 (Pacific Consolidated Industries Llc).
Key specifications for 580652-003: First End Thread Series Designator: NPT; Temp Rating: 365.0 FAHRENHEIT DEGF; Body Style: SINGLE CONNECTION, STRAIGHT FLOW; First End Style Designator: EXTERNAL SEAT FOR GASKET SEAL. 8 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.
NSN 4820-01-366-9979 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.