The Valve,check, cataloged under National Stock Number 4820-00-813-7474, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-813-7474 |
| Primary Part Number | 342C139H02 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | CANCELLED |
| Flow Control Device | POPPET |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Disk Loading Method | SPRING |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Valve Operation Method | AUTOMATIC |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | COPPER ALLOY OVERALL |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Thread Series Designator | NPT ALL ENDS |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 342C139H02 | Westinghouse Electric Corp (USA) |
| 3047 | Scovill Inc Schrader Bellows Div (USA) |
| 342C139H02 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 03047-0099 | Parker Hannifin Corporation Dba Schraeder Bellows Div Pneumatic Division (USA) |
| 03047-0099 | Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division (USA) |
NSN 4820-00-813-7474 is a Valve,check, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-813-7474 has 5 cross-referenced part numbers: 342C139H02 (Westinghouse Electric Corp), 3047 (Scovill Inc Schrader Bellows Div), 342C139H02 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 03047-0099 (Parker Hannifin Corporation Dba Schraeder Bellows Div Pneumatic Division), 03047-0099 (Parker-Hannifin Corporation Dba Pneutronics Div Pneumatic Division).
There are 12 known substitutes for 4820-00-813-7474: 5985-00-111-6260, 5340-00-291-3543, 5315-00-612-9034 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 342C139H02: Flow Control Device: POPPET; Mounting Position: HORIZONTAL OR VERTICAL; Disk Loading Method: SPRING; Style Designator: STRAIGHT THRU. 13 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-813-7474 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.