The Valve,ball, cataloged under National Stock Number 4820-00-246-4990, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-246-4990 |
| Primary Part Number | 2621-926-03ASSYIATTLG1-4INL1 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Renewable Seat Ring Type | PRESSED-IN |
| Nominal Pipe Size Accommodated | 0.250 INCHES FIRST END IN |
| Connection Style | SOCKET WITH BRAZING RING FIRST END |
| Criticality Code Justification | ZZZY |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | PACKING RETAINING |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Material | TITANIUM ALLOY UNS R56400 FLOW CONTROL DEVICE |
| Material | COPPER ALLOY 922 BODY |
| Material | NICKEL ALLOY 400 STEM |
| Valve Operation Method | MANUAL |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 2621-926-03ASSYIATTLG1-4INL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2620-926X14SH1ASSYB1-4INL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 800-5001003-A131L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2621-926-03ASSYIATTLG1-4IN | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| 2621-926-03ASSYIATTLG1-4IN | 5/9 Secondary reference U.S. Government activity |
| 800-5001003-A131 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 2620-926X14SH1ASSYB1-4IN | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| 2620-926X14SH1ASSYB1-4IN | 5/9 Secondary reference U.S. Government activity |
| 2620-926X14SH1ASSYB1-4IN | 5/9 Secondary reference Circor Intl Inc |
| 2621-926-03ASSYIATTLG1-4IN | 5/9 Secondary reference Circor Intl Inc |
NSN 4820-00-246-4990 is a Valve,ball, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-246-4990 has 3 manufacturer part numbers on file: 2621-926-03ASSYIATTLG1-4INL1 (Naval Inventory Control Point Mechanicsburg), 2620-926X14SH1ASSYB1-4INL1 (Naval Inventory Control Point Mechanicsburg), 800-5001003-A131L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 2621-926-03ASSYIATTLG1-4INL1: Renewable Seat Ring Type: PRESSED-IN; Nominal Pipe Size Accommodated: 0.250 INCHES FIRST END IN; Connection Style: SOCKET WITH BRAZING RING FIRST END; Criticality Code Justification: ZZZY. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.