The Piston,valve, cataloged under National Stock Number 4820-01-416-7863, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 8 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 | 4820-01-416-7863 |
| Primary Part Number | 782137-19 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Valve Type for Which Designed | PRESSURE REDUCING |
| Valve Model Number for Which Designed | 778695 |
| Outside Diameter | 0.356 INCHES NOMINAL IN |
| Material Document and Classification | AMS 4117 ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Diameter | 0.610 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Valve Design Control Activity | 73030 |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 782137-19 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4820-01-416-7863 is a Piston,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-416-7863 has 1 manufacturer part number on file: 782137-19 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 782137-19: Valve Type for Which Designed: PRESSURE REDUCING; Valve Model Number for Which Designed: 778695; Outside Diameter: 0.356 INCHES NOMINAL IN; Material Document and Classification: AMS 4117 ASSN STD SINGLE MATERIAL RESPONSE. 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.
NSN 4820-01-416-7863 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.