The Valve,ball, cataloged under National Stock Number 4820-01-665-3191, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-665-3191 |
| Primary Part Number | 1 1/2" 5966RTSW |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation |
| Status | ACTIVE |
| Connection Style | SOCKET ALL ENDS |
| Nominal Length | 4.94 INCHES ALL ENDS IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Valve Size | 1.50 INCHES IN |
| Material | STEEL CORROSION RESISTING BODY |
| 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 |
|---|---|
| 1 1/2" 5966RTSW PRIMARY | Flowserve Us Inc. Div Flowserve Cookeville Valve Operation (USA) |
| 125966RT-SW | Centro, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5966RTSW-1.25 | 5/9 Secondary reference Worcester Ball Valves |
NSN 4820-01-665-3191 is a Valve,ball, manufactured by Flowserve Us Inc. Div Flowserve Cookeville Valve Operation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-665-3191 has 2 manufacturer part numbers on file: 1 1/2" 5966RTSW (Flowserve Us Inc. Div Flowserve Cookeville Valve Operation), 125966RT-SW (Centro, Inc.).
Key specifications for 1 1/2" 5966RTSW: Connection Style: SOCKET ALL ENDS; Nominal Length: 4.94 INCHES ALL ENDS IN; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 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.
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.