The Valve,ball, cataloged under National Stock Number 4820-01-658-8857, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Us Inc. Div Flowserve Cookeville Valve Operation. Government technical data includes 15 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 | 4820-01-658-8857 |
| Primary Part Number | 3/4-4446YBSW |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 HANDLE |
| Nominal Pipe Size Accommodated | 1.065 INCHES ALL ENDS IN |
| Connection Style | REDUCED SOCKET ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A216 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Operating Pressure | 1480.00 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.75 INCHES IN |
| Face to Face Distance | 2.76 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL COMP 316 STEM |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 3/4-4446YBSW PRIMARY | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation (USA) |
NSN 4820-01-658-8857 is a Valve,ball, manufactured by Flowserve Us Inc. Div Flowserve Cookeville Valve Operation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-658-8857 has 1 manufacturer part number on file: 3/4-4446YBSW (Flowserve Us Inc. Div Flowserve Cookeville Valve Operation).
Key specifications for 3/4-4446YBSW: Furnished Items and Quantity: 1 HANDLE; Nominal Pipe Size Accommodated: 1.065 INCHES ALL ENDS IN; Connection Style: REDUCED SOCKET ALL ENDS; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS. 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.
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.