The Cartridge,check Valve, cataloged under National Stock Number 4820-00-450-9840, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Admiral Valve Llc Dba Cpv Manufacturing. Government technical data includes 6 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-450-9840 |
| Primary Part Number | 665-6 |
| Item Name | Cartridge,check Valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Admiral Valve Llc Dba Cpv Manufacturing |
| Status | ACTIVE |
| Port Diameter | 1.000 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 1 1/4-11 1/2 NPT |
| Maximum Operating Temp | 225.0 FAHRENHEIT DEGF |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Valve Size | 1.250 INCHES IN |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 516-1929544 PIECE 9 | Naval Ship Systems Command (USA) |
| 58320-1 | Mckiernan-Terry Marine Div of Litton Systems Inc (USA) |
| 665-6 PRIMARY | Admiral Valve Llc Dba Cpv Manufacturing (USA) |
NSN 4820-00-450-9840 is a Cartridge,check Valve, manufactured by Admiral Valve Llc Dba Cpv Manufacturing, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-450-9840 has 3 cross-referenced part numbers: 516-1929544 PIECE 9 (Naval Ship Systems Command), 58320-1 (Mckiernan-Terry Marine Div of Litton Systems Inc), 665-6 (Admiral Valve Llc Dba Cpv Manufacturing).
There are 10 known substitutes for 4820-00-450-9840: 5133-00-061-6288, 3120-00-237-7682, 4940-00-318-9078 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 665-6: Port Diameter: 1.000 INCHES NOMINAL IN; Thread Size and Series/type Designator: 1 1/4-11 1/2 NPT; Maximum Operating Temp: 225.0 FAHRENHEIT DEGF; Operating Pressure: 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. 6 total characteristics are documented in the Federal Logistics Information System.