The Valve,restrictor Check, cataloged under National Stock Number 4820-01-012-6847, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-012-6847 |
| Primary Part Number | 68B690101-139 |
| Item Name | Valve,restrictor Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Connection Style | GASKET SEAL (TUBE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Aperture Diameter | 0.139 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.718 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Surface Treatment | PASSIVATE |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNS ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 68B690101-139 PRIMARY | The Boeing Company Div Defense (USA) |
| 7M845-3 | The Boeing Company Div Defense (USA) |
| 5590-139 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 5590-139 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 4820-01-012-6847 is a Valve,restrictor Check, manufactured by The Boeing Company Div Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-012-6847 has 3 manufacturer part numbers on file: 68B690101-139 (The Boeing Company Div Defense), 7M845-3 (The Boeing Company Div Defense), 5590-139 (The Boeing Company).
Key specifications for 68B690101-139: Flow Control Device: POPPET; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE; Connection Style: GASKET SEAL (TUBE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL. 17 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.