The Valve,check, cataloged under National Stock Number 4820-00-904-2302, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-904-2302 |
| Primary Part Number | P42-319 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Circor Aerospace, Inc. Dba Circor Aerospace Inc |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | QQ-A-225/6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Media for Which Designed | AIR FIRST RESPONSE |
| Nominal Thread Size | 0.437 INCHES FIRST END IN |
| Surface Treatment | ANODIZE |
| Thread Series Designator | UNF ALL ENDS |
| Maximum Operating Temp | -65.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Media for Which Designed | ALCOHOL, ETHYL SECOND RESPONSE |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Nominal Thread Size | 0.375 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Flow Control Device | POPPET |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Maximum Operating Temp | 260.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Thread Class | 3A ALL ENDS A |
| Disk Loading Method | SPRING |
| Operating Pressure | 100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| P42-319 PRIMARY | Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA) |
| C222-2 | Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company (USA) |
| 4820PL0654940 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
NSN 4820-00-904-2302 is a Valve,check, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-904-2302 has 3 cross-referenced part numbers: P42-319 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), C222-2 (Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company), 4820PL0654940 (Jednolity Indeks Materialowy - Uniform Material Index).
There are 2 known substitutes for 4820-00-904-2302: 5950-00-175-7301, 4820-01-546-8284. Verify interchangeability with system specifications before substitution.
Key specifications for P42-319: Material: ALUMINUM ALLOY 2024 OVERALL; Surface Treatment Document and Classification: MIL-A-8625,TY 1 MIL SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-A-225/6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: THE END CONNECTION IDENTIFIEDABOVE AS THE SECOND END IS THE VALVE INLET. 24 total characteristics are documented in the Federal Logistics Information System.