The Valve,ball, cataloged under National Stock Number 4820-01-357-6267, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-357-6267 |
| Primary Part Number | DF330643 ASSY 97L1 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LEVER |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Criticality Code Justification | ZZZY |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 5100.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | PLASTIC ACETAL SEAT |
| 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 B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| DF330643 ASSY 97L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 801-6408783 ASSEMBLY 97L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 211046681L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 801-6408783 ASSEMBLY 97 | 3/1 Design control — primary reference Naval Sea Systems Command |
| DF330643 ASSY 97 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 211046681 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-357-6267 is a Valve,ball, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-357-6267 has 3 manufacturer part numbers on file: DF330643 ASSY 97L1 (Naval Inventory Control Point Mechanicsburg), 801-6408783 ASSEMBLY 97L1 (Naval Inventory Control Point Mechanicsburg), 211046681L1 (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-548-7723. Verify interchangeability with system specifications before substitution.
Key specifications for DF330643 ASSY 97L1: Furnished Items and Quantity: 1 LEVER; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) ALL ENDS; Criticality Code Justification: ZZZY. 15 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.
NSN 4820-01-357-6267 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.