The Valve,ball, cataloged under National Stock Number 4820-01-643-2603, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Legend Valve and Fitting Inc. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-643-2603 |
| Primary Part Number | T-601-1 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Legend Valve and Fitting Inc |
| Status | ACTIVE |
| Maximum Operating Temp | 350.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Material | BRONZE BODY |
| 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 |
|---|---|
| T-601-1 PRIMARY | Legend Valve and Fitting Inc (USA) |
| Reference | Meaning |
|---|---|
| S2621010 | 5/9 Secondary reference Advanced Compressor and Hose, Inc. |
NSN 4820-01-643-2603 is a Valve,ball, manufactured by Legend Valve and Fitting Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-643-2603 has 1 manufacturer part number on file: T-601-1 (Legend Valve and Fitting Inc).
Key specifications for T-601-1: Maximum Operating Temp: 350.0 FAHRENHEIT SINGLE RESPONSE DEGF; Special Features: FERGUSON PLASTICS (509-535-6500) IS OEM; Part Name Assigned by Controlling Agency: 2-PIECE, FULL PORT, BRONZE BALL VALVE; End Item Identification: 5419-01-539-7178; EXPEDITIONARY LATRINE SYSTEM. 4 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.