The Valve,check, cataloged under National Stock Number 4820-00-943-1011, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is The Walworth Company. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-943-1011 |
| Primary Part Number | 2620-902ASSYB2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Material | COPPER ALLOY BODY |
| Mounting Position | HORIZONTAL |
| Nominal Pipe Size Accommodated | 2.000 INCHES FIRST END IN |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Material | NICKEL ALLOY SEAT |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Connection Style | SOCKET WITH BRAZING RING (PIPE) FIRST END |
| Criticality Code Justification | ZZZY |
| Style Designator | ANGLE |
| Flow Control Device | DISK |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Renewable Seat Ring Type | THREADED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2620-902ASSYB2 | The Walworth Company (USA) |
| 845-1889587ASSYB2L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2620-902 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 2620-902L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2620-902ASSYB2 | Electric Boat Corporation Div General Dynamics Electric Boat (USA) |
| 845-1889587ASSYB2 | Naval Ship Systems Command (USA) |
| 2620-902ASSYB2L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2620-902 | The Walworth Company (USA) |
NSN 4820-00-943-1011 is a Valve,check, manufactured by The Walworth Company, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-00-943-1011 has 8 cross-referenced part numbers: 2620-902ASSYB2 (The Walworth Company), 845-1889587ASSYB2L1 (Naval Inventory Control Point Mechanicsburg), 2620-902 (Electric Boat Corporation Div General Dynamics Electric Boat), 2620-902L1 (Naval Inventory Control Point Mechanicsburg), 2620-902ASSYB2 (Electric Boat Corporation Div General Dynamics Electric Boat) and 3 more.
There are 9 known substitutes for 4820-00-943-1011: 4820-00-922-8422, 4820-00-926-4214, 4820-00-943-1014 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 2620-902ASSYB2: Material: COPPER ALLOY BODY; Mounting Position: HORIZONTAL; Nominal Pipe Size Accommodated: 2.000 INCHES FIRST END IN; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 13 total characteristics are documented in the Federal Logistics Information System.