The Valve,ball, cataloged under National Stock Number 4820-01-266-6799, 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 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-266-6799 |
| Primary Part Number | F20-08363 ASSY AL1 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Bonnet Attachment Method | BOLTED |
| Material | PLASTIC POLYURETHANE SEAT |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH 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 |
|---|---|
| F20-08363 ASSY AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| V8363 ASSY AL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| F20-08363ASSYAM0D | C/1 Advisory reference — outside the item-of-supply concept Tyco Fire Products Lp |
| F20-08363ASSYAM0D | 5/9 Secondary reference Rockwood Systems Corp |
| F20-08363 ASSY A | 3/1 Design control — primary reference Tyco Fire Products Lp |
| F20-08363ASSYAM0DL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| V8363 ASSY A | 5/1 Secondary reference Tyco Fire Products Lp |
NSN 4820-01-266-6799 is a Valve,ball, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-266-6799 has 2 manufacturer part numbers on file: F20-08363 ASSY AL1 (Naval Inventory Control Point Mechanicsburg), V8363 ASSY AL1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for F20-08363 ASSY AL1: Criticality Code Justification: ZZZY; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU; Bonnet Type: OUTSIDE SCREW-YOKE. 7 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 4820-01-266-6799 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.