The Valve,ball, cataloged under National Stock Number 4820-01-718-8786, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is WS Darley & Co Div Ohler Pump. 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 | 4820-01-718-8786 |
| Primary Part Number | RB4476 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | WS Darley & Co Div Ohler Pump |
| Status | ACTIVE |
| Flange Shape | HEXAGON FIRST END |
| Nominal Pipe Size Accommodated | 0.25 INCHES FIRST END IN |
| Connection Style | BARBED-BEADED (HOSE) SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Connection Type | UNTHREADED INTERNAL TUBE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND END IN |
| Valve Size | 0.25 INCHES IN |
| Material | COPPER ALLOY AND ZINC ALLOY OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| RB4476 PRIMARY | WS Darley & Co Div Ohler Pump (USA) |
NSN 4820-01-718-8786 is a Valve,ball, manufactured by WS Darley & Co Div Ohler Pump, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-718-8786 has 1 manufacturer part number on file: RB4476 (WS Darley & Co Div Ohler Pump).
Key specifications for RB4476: Flange Shape: HEXAGON FIRST END; Nominal Pipe Size Accommodated: 0.25 INCHES FIRST END IN; Connection Style: BARBED-BEADED (HOSE) SECOND END; Connection Style: PLAIN (PIPE) FIRST END. 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.