The Valve,check, cataloged under National Stock Number 4820-01-519-8220, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Johnson Controls Navy Systems, Llc. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Johnson Controls Navy Systems, Llc (CAGE 66935) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-519-8220 |
| Primary Part Number | 022-04444B000 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 364-48430-000 ITEM 15 | Johnson Controls Navy Systems, Llc (USA) |
| 022-04444B000 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 364-48430-000 | D/9 Drawing number reference only Johnson Controls Navy Systems, Llc |
NSN 4820-01-519-8220 is a Valve,check, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-519-8220 has 2 manufacturer part numbers on file: 364-48430-000 ITEM 15 (Johnson Controls Navy Systems, Llc), 022-04444B000 (Johnson Controls Navy Systems, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 3130-01-519-8377, 4730-01-519-8751, 6680-01-520-4317. Verify interchangeability with system specifications before substitution.
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.