The Valve,ball, cataloged under National Stock Number 4820-01-563-6891, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is A-T Controls Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-563-6891 |
| Primary Part Number | 55-BW-0300-XXX |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | A-T Controls Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE AND 1 LOCKING DEVICE |
| Renewable Seat Ring Type | PRESSED-IN |
| Nominal Pipe Size Accommodated | 3.000 INCHES ALL ENDS IN |
| Connection Style | BEVELED (PIPE) ALL ENDS |
| Connection Type | BUTT WELD PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 180.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | OIL, HYDRAULIC SINGLE RESPONSE |
| Material | STEEL CORROSION RESISTING OVERALL |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Valve Operation Method | MANUAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 55-BW-0300-XXX PRIMARY | A-T Controls Inc (USA) |
NSN 4820-01-563-6891 is a Valve,ball, manufactured by A-T Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-563-6891 has 1 manufacturer part number on file: 55-BW-0300-XXX (A-T Controls Inc).
Key specifications for 55-BW-0300-XXX: Furnished Items and Quantity: 1 HANDLE AND 1 LOCKING DEVICE; Renewable Seat Ring Type: PRESSED-IN; Nominal Pipe Size Accommodated: 3.000 INCHES ALL ENDS IN; Connection Style: BEVELED (PIPE) ALL ENDS. 12 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.