The Valve,check, cataloged under National Stock Number 4820-01-339-8728, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Mfg Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-339-8728 |
| Primary Part Number | 18291 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Mfg Co |
| 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 |
|---|---|
| 18291 PRIMARY | Hamilton Mfg Co (USA) |
| 3012110053MM | United States Plastic Corp (USA) |
| Reference | Meaning |
|---|---|
| 47446 | 5/9 Secondary reference Hamilton Mfg Co |
NSN 4820-01-339-8728 is a Valve,check, manufactured by Hamilton Mfg Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-339-8728 has 2 manufacturer part numbers on file: 18291 (Hamilton Mfg Co), 3012110053MM (United States Plastic Corp).
Key specifications for 18291: Special Features: FOR USE ON SINK UNIT,SCRUB; MODEL 950S936. 0 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.