The Valve,check, cataloged under National Stock Number 4820-01-038-7940, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Jenkins Bros. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-038-7940 |
| Primary Part Number | 339R |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Jenkins Bros |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 6.000 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Style Designator | STRAIGHT THRU |
| Maximum Operating Temp | 450.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | IRON CAST OVERALL |
| Operating Pressure | 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Operating Pressure | 500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 339R | Jenkins Bros (USA) |
NSN 4820-01-038-7940 is a Valve,check, manufactured by Jenkins Bros, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-038-7940 has 1 cross-referenced part number: 339R (Jenkins Bros).
There is 1 known substitute for 4820-01-038-7940: 7530-00-262-8627. Verify interchangeability with system specifications before substitution.
Key specifications for 339R: Nominal Pipe Size Accommodated: 6.000 INCHES FIRST END IN; Mounting Position: HORIZONTAL; Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE; Style Designator: STRAIGHT THRU. 9 total characteristics are documented in the Federal Logistics Information System.