The Valve,check, cataloged under National Stock Number 4820-01-237-0095, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company Div Legacy Am&m. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-0095 |
| Primary Part Number | LE284-0047-0001 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.312 INCHES FIRST END IN |
| Nominal Thread Size | 1.062 INCHES SECOND END IN |
| Seat Angle | 37.5 DEGREES ALL ENDS |
| Disk Loading Method | SPRING |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 12 ALL ENDS |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | ALUMINUM ALLOY 2024 BODY |
| Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) 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 | X |
| Part Number | Manufacturer |
|---|---|
| LE284-0047-0001 | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| LE284-0047 | 7/1 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
| 1C1880 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-237-0095 is a Valve,check, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-237-0095 has 1 manufacturer part number on file: LE284-0047-0001 (The Boeing Company Div Legacy Am&m).
Key specifications for LE284-0047-0001: Flow Control Device: POPPET; Connection Style: FLARED (TUBE) ALL ENDS; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED EXTERNAL TUBE 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.
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.