The Valve, cataloged under National Stock Number 4820-01-050-9256, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Preece Inc Decca Valves Div. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-050-9256 |
| Primary Part Number | A4650 |
| Item Name | Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Preece Inc Decca Valves Div |
| Status | ACTIVE |
| General Characteristics Item Description | 1.400 IN. MIN 1.440 IN. MAX LG IN |
| 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 |
|---|---|
| A4650 | Preece Inc Decca Valves Div (USA) |
| Reference | Meaning |
|---|---|
| 2C1000 | 3/2 Design control — primary reference U.S. Government activity |
| C7904-3 | 7/2 Vendor item drawing reference U.S. Government activity |
| 4820PL1626896 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4820PL0655253 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 4820-01-050-9256 is a Valve, manufactured by Preece Inc Decca Valves Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-050-9256 has 1 manufacturer part number on file: A4650 (Preece Inc Decca Valves Div).
Key specifications for A4650: General Characteristics Item Description: 1.400 IN. MIN 1.440 IN. MAX LG IN. 1 specification is 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 4820-01-050-9256 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.