The Valve,stop-Check, cataloged under National Stock Number 4820-00-922-8422, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4820-00-922-8422 |
| Primary Part Number | 2620-902 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Electric Boat Corporation Div General Dynamics Electric Boat |
| Status | CANCELLED |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Renewable Seat Ring Type | THREADED |
| Features Provided | BONNET PACKING |
| Material | COPPER ALLOY 922 BODY |
| Bonnet Type | INSIDE SCREW |
| Criticality Code Justification | ZZZY |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Style Designator | STRAIGHT THRU |
| Flow Control Device | DISK |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Style | SOCKET WITH BRAZING RING (PIPE) FIRST END |
| Valve Operation Method | MANUAL |
| Maximum Operating Temp | 150.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Mounting Position | HORIZONTAL |
| Bonnet Attachment Method | UNION |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Material | NICKEL ALLOY 400 OR NICKEL ALLOY R-405 STEM |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2620-902 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 845-1889587ASSYE1/2IN | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2620-902L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-1889587ASSYE1/2INL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2620-902ASSYE1/2IN | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2620-902ASSYE1/2INL1 | Naval Inventory Control Point Mechanicsburg (USA) |
NSN 4820-00-922-8422 is a Valve,stop-Check, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4820 (No Item Name Available). Status: cancelled.
NSN 4820-00-922-8422 has 6 cross-referenced part numbers: 2620-902 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-1889587ASSYE1/2IN (Electric Boat Corporation Div General Dynamics Electric Boat), 2620-902L1 (Naval Inventory Control Point Mechanicsburg), 845-1889587ASSYE1/2INL1 (Naval Inventory Control Point Mechanicsburg), 2620-902ASSYE1/2IN (Electric Boat Corporation Div General Dynamics Electric Boat) and 1 more.
There are 9 known substitutes for 4820-00-922-8422: 4820-00-926-4214, 4820-00-943-1011, 4820-00-943-1014 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2620-902: Connection Type: UNTHREADED INTERNAL PIPE FIRST END; Renewable Seat Ring Type: THREADED; Features Provided: BONNET PACKING; Material: COPPER ALLOY 922 BODY. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 4820-00-922-8422 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.