The Valve,restrictor Check, cataloged under National Stock Number 4820-01-414-4070, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Alpine Industries, Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-414-4070 |
| Primary Part Number | AHY001-A6 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Alpine Industries, Llc |
| Status | ACTIVE |
| Disk Loading Method | SPRING |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| AHY001-A6 PRIMARY | Alpine Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| AHY001 | D/9 Drawing number reference only Alpine Industries, Llc |
NSN 4820-01-414-4070 is a Valve,restrictor Check, manufactured by Alpine Industries, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-414-4070 has 1 manufacturer part number on file: AHY001-A6 (Alpine Industries, Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-414-7841. Verify interchangeability with system specifications before substitution.
Key specifications for AHY001-A6: Disk Loading Method: SPRING; End Item Identification: 4610-01-364-4485 USED ON HYPOCHLORINATION UNIT; Valve Operation Method: AUTOMATIC. 2 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.