The Valve,check, cataloged under National Stock Number 4820-00-567-6640, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 15 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-567-6640 |
| Primary Part Number | 314203 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | CANCELLED |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Mounting Position | HORIZONTAL |
| Nominal Thread Size | 0.875 INCHES FIRST END IN |
| Thread Series Designator | UNF FIRST END |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Operating Pressure | 70.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND FIRST END |
| Thread Series Designator | UNF SECOND END |
| Disk Loading Method | SPRING |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Class | 3B SECOND END |
| Thread Class | 3B FIRST END |
| Thread Quantity Per Inch | 14 FIRST END |
| Thread Quantity Per Inch | 20 SECOND END |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 4820-00-567-6640 is a Valve,check, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-567-6640 has 2 cross-referenced part numbers: 314203 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 314129 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
There is 1 known substitute for 4820-00-567-6640: 5950-00-914-3527. Verify interchangeability with system specifications before substitution.
Key specifications for 314203: Nominal Thread Size: 0.438 INCHES SECOND END IN; Mounting Position: HORIZONTAL; Nominal Thread Size: 0.875 INCHES FIRST END IN; Thread Series Designator: UNF FIRST END. 15 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-567-6640 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.