The Valve,check, cataloged under National Stock Number 4820-01-199-5648, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Armstrong-Blum Mfg. Co.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Armstrong-Blum Mfg. Co. (CAGE 03895) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-199-5648 |
| Primary Part Number | 8-1223A |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Armstrong-Blum Mfg. Co. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 8-1223A PRIMARY | Armstrong-Blum Mfg. Co. (USA) |
| Reference | Meaning |
|---|---|
| 8-1223 | C/1 Advisory reference — outside the item-of-supply concept Armstrong-Blum Mfg. Co. |
NSN 4820-01-199-5648 is a Valve,check, manufactured by Armstrong-Blum Mfg. Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-199-5648 has 1 manufacturer part number on file: 8-1223A (Armstrong-Blum Mfg. Co.).
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.