The Valve Assembly,manifold, cataloged under National Stock Number 4820-01-503-5328, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Alkon Corporation. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-503-5328 |
| Primary Part Number | JF1 |
| Item Name | Valve Assembly,manifold |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Alkon Corporation |
| Status | ACTIVE |
| Valve Quantity | 2 |
| Furnished Items and Quantity | 1 LOCKING DEVICE |
| Connection Type | THREADED INTERNAL PIPE |
| End Connection Quantity | 2 |
| Nominal Thread Size | 0.125 INCHES IN |
| Body Material | COPPER ALLOY |
| Thread Series Designator | NPT |
| Valve Operation Method | AUTOMATIC AND MANUAL |
| 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 |
|---|---|
| JF1 PRIMARY | Alkon Corporation (USA) |
| E5-6654-31 | Buffalo Machine Tools of Niagara Inc Div Buffalo Machines Inc (USA) |
| Reference | Meaning |
|---|---|
| JF1 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-503-5328 is a Valve Assembly,manifold, manufactured by Alkon Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-5328 has 2 manufacturer part numbers on file: JF1 (Alkon Corporation), E5-6654-31 (Buffalo Machine Tools of Niagara Inc Div Buffalo Machines Inc).
1 possible match (shared part number, not a government interchangeability claim): 9130-01-525-4045. Verify interchangeability with system specifications before substitution.
Key specifications for JF1: Valve Quantity: 2; Furnished Items and Quantity: 1 LOCKING DEVICE; Overall Height: 1.803 INCHES NOMINAL IN; Connection Type: THREADED INTERNAL PIPE. 8 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.