The Piston,valve, cataloged under National Stock Number 4820-01-334-0688, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Spectrum Associates, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Piston,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Spectrum Associates, Inc. (CAGE 55723) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-334-0688 |
| Primary Part Number | 20-051-03 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Spectrum Associates, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 20-051-03 PRIMARY | Spectrum Associates, Inc. (USA) |
NSN 4820-01-334-0688 is a Piston,valve, manufactured by Spectrum Associates, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-334-0688 has 1 manufacturer part number on file: 20-051-03 (Spectrum Associates, Inc.).
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 4820-01-334-0688 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.