The Piston,valve, cataloged under National Stock Number 4820-01-219-8221, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mission Systems Orchard Park Inc. Government technical data includes 4 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-219-8221 |
| Primary Part Number | 2192-0091-1 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mission Systems Orchard Park Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | CPS 130 MFR REF SINGLE TREATMENT RESPONSE |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 2192-0091-1 PRIMARY | Mission Systems Orchard Park Inc (USA) |
NSN 4820-01-219-8221 is a Piston,valve, manufactured by Mission Systems Orchard Park Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-219-8221 has 1 manufacturer part number on file: 2192-0091-1 (Mission Systems Orchard Park Inc).
Key specifications for 2192-0091-1: Surface Treatment Document and Classification: CPS 130 MFR REF SINGLE TREATMENT RESPONSE; Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE; Overall Length: 1.240 INCHES NOMINAL IN; Special Features: CRES 17-4 COND A PER AMS 5643; HEAT TREAT TO COND H900 PER CPS 423 APPX NO. 3; PASSIVATE PER CPS 130; USED ON OXYGEN VALVE 1660-01-211-2088. 4 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.