The Valve,check, cataloged under National Stock Number 4820-00-273-9902, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Walworth Company. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-273-9902 |
| Primary Part Number | 5344F-AA |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | The Walworth Company |
| Status | CANCELLED |
| Connection Type | FLANGE ALL ENDS |
| Maximum Operating Temp | 750.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Mounting Position | HORIZONTAL |
| Material | STEEL CORROSION RESISTING SEAT |
| Nominal Outside Diameter | 6.500 INCHES ALL ENDS IN |
| Bolt Circle Nominal Diameter | 5.000 INCHES ALL ENDS IN |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thickness | 0.875 INCHES ALL ENDS IN |
| Style Designator | STRAIGHT THRU |
| Material | STEEL BODY |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Raised Face Nominal Diameter | 3.625 INCHES ALL ENDS IN |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Face to Face Distance | 10.500 INCHES IN |
| Raised Face Nominal Height | 0.062 INCHES ALL ENDS IN |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Bolt Hole Quantity | 8 ALL ENDS |
| Renewable Seat Ring Type | THREADED |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Flow Control Device | DISK |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-273-9902 is a Valve,check, manufactured by The Walworth Company, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-273-9902 has 2 cross-referenced part numbers: 5344F (The Walworth Company), 5344F-AA (The Walworth Company).
There are 4 known substitutes for 4820-00-273-9902: 4820-00-273-9903, 4820-00-273-9905, 4820-00-273-9906 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5344F-AA: Connection Type: FLANGE ALL ENDS; Maximum Operating Temp: 750.0 FAHRENHEIT SINGLE RESPONSE DEGF; Flange Shape: ROUND WITH HOLES ALL ENDS; Valve Operation Method: AUTOMATIC. 22 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-273-9902 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.