The Valve,expansion, cataloged under National Stock Number 4820-01-317-7441, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bayonne Stainless Products Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-317-7441 |
| Primary Part Number | FBF-1/4C |
| Item Name | Valve,expansion |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bayonne Stainless Products Inc |
| Status | ACTIVE |
| Flow Control Device | DISK, BOTTOM GUIDED |
| Body Style | STRAIGHT THRU |
| End Connection Quantity | 2 |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY STEM |
| 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 |
|---|---|
| FBF-1/4C PRIMARY | Bayonne Stainless Products Inc (USA) |
| Reference | Meaning |
|---|---|
| FBF-1/4C | 5/1 Secondary reference Parker-Hannifin Corp Div Sporlan Division |
NSN 4820-01-317-7441 is a Valve,expansion, manufactured by Bayonne Stainless Products Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-317-7441 has 1 manufacturer part number on file: FBF-1/4C (Bayonne Stainless Products Inc).
Key specifications for FBF-1/4C: Flow Control Device: DISK, BOTTOM GUIDED; Body Style: STRAIGHT THRU; End Connection Quantity: 2; Special Features: VALVE SIZE IS 0.250 IN. IN. 5 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.