The Valve,check, cataloged under National Stock Number 4820-01-469-3468, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Corp Dba Pneutronics. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-469-3468 |
| Primary Part Number | E6-166-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Corp Dba Pneutronics |
| Status | ACTIVE |
| Bolt Circle Nominal Diameter | 0.304 INCHES ALL ENDS IN |
| Mounting Position | HORIZONTAL |
| Minimum Operating Temp | -65.0 FAHRENHEIT DEGF |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.149 INCHES ALL ENDS IN |
| Operating Pressure | 60.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.138 INCHES ALL ENDS IN |
| Maximum Operating Temp | 160.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Bolt Hole Quantity | 2 ALL ENDS |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.656 INCHES ALL ENDS IN |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Thread Class | 3B ALL ENDS |
| Thread Quantity Per Inch | 32 ALL ENDS |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL ENDS |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| E6-166-1 PRIMARY | Parker Hannifin Corp Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 48C1000-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-469-3468 is a Valve,check, manufactured by Parker Hannifin Corp Dba Pneutronics, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-469-3468 has 1 manufacturer part number on file: E6-166-1 (Parker Hannifin Corp Dba Pneutronics).
Key specifications for E6-166-1: Bolt Circle Nominal Diameter: 0.304 INCHES ALL ENDS IN; Mounting Position: HORIZONTAL; Minimum Operating Temp: -65.0 FAHRENHEIT DEGF; Connection Type: THREADED EXTERNAL BOSS ALL ENDS. 16 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 4820-01-469-3468 has DEMIL Code B. 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.