The Bellows,metallic,packless Valve, cataloged under National Stock Number 4820-01-522-2500, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Bellows,metallic,packless Valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Portland Valve Llc (CAGE 53154) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-522-2500 |
| Primary Part Number | 506-1000 |
| Item Name | Bellows,metallic,packless Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| 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 |
|---|---|
| 506-1000 PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| 506-3002 | D/9 Drawing number reference only Portland Valve Llc |
| 506-3002 PC NO 14 | 5/9 Secondary reference Portland Valve Llc |
| AB-11803-HB2 | 3/9 Design control — primary reference Portland Valve Llc |
NSN 4820-01-522-2500 is a Bellows,metallic,packless Valve, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-522-2500 has 1 manufacturer part number on file: 506-1000 (Portland Valve Llc).
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.