The Valve,check, cataloged under National Stock Number 4820-01-184-4098, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-184-4098 |
| Primary Part Number | 7M545-28 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connection Type | FLANGE FIRST END |
| Nominal Outside Diameter | 1.741 INCHES FIRST END IN |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| Flow Control Device | DISKDISK |
| Raised Face Nominal Diameter | 1.688 INCHES FIRST END IN |
| Nominal Thickness | 0.312 INCHES FIRST END IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 7M545-28 PRIMARY | The Boeing Company Div Defense (USA) |
| 7D2W-140002 | Aerocontrolex Group, Inc. (USA) |
| 7M545 | The Boeing Company Div Defense (USA) |
NSN 4820-01-184-4098 is a Valve,check, manufactured by The Boeing Company Div Defense, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-184-4098 has 3 cross-referenced part numbers: 7M545-28 (The Boeing Company Div Defense), 7D2W-140002 (Aerocontrolex Group, Inc.), 7M545 (The Boeing Company Div Defense).
There are 3 known substitutes for 4820-01-184-4098: 4820-01-128-2319, 4820-01-130-5538, 4820-01-184-0389. Verify interchangeability with system specifications before substitution.
Key specifications for 7M545-28: Connection Type: FLANGE FIRST END; Nominal Outside Diameter: 1.741 INCHES FIRST END IN; Valve Operation Method: AUTOMATICAUTOMATIC; Flow Control Device: DISKDISK. 7 total characteristics are documented in the Federal Logistics Information System.