The Valve,check, cataloged under National Stock Number 4820-00-604-0668, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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 | 4820-00-604-0668 |
| Primary Part Number | 343AS250-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | CANCELLED |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Mounting Position | HORIZONTAL |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Series Designator | NPT ALL ENDS |
| Media for Which Designed | FUEL/OIL, HYDROCARBON SINGLE RESPONSE |
| Operating Pressure | 4500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Flow Control Device | POPPET |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 3029 | G E Mcclain Enterprises Inc Dba Mc Clain Enterprises (USA) |
| 343AS250 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 105262 | Air Logistics Corporation Dba Air Logistics Corp (USA) |
| 3029 | Trevose Industrial Products Inc (USA) |
| G-105262 | Airbus Helicopters Deutschland Gmbh (DEU) |
| 343AS250-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 4820-00-604-0668 is a Valve,check, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-604-0668 has 6 cross-referenced part numbers: 3029 (G E Mcclain Enterprises Inc Dba Mc Clain Enterprises), 343AS250 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 105262 (Air Logistics Corporation Dba Air Logistics Corp), 3029 (Trevose Industrial Products Inc), G-105262 (Airbus Helicopters Deutschland Gmbh) and 1 more.
There are 12 known substitutes for 4820-00-604-0668: 6210-00-224-8326, 4730-00-476-5861, 5935-00-570-5859 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 343AS250-1: Thread Direction: RIGHT-HAND ALL ENDS; Mounting Position: HORIZONTAL; Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 11 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-604-0668 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.