
3-Piece Extended-Weld Ball Valve is a split-type ball valve designed for welded pipeline applications. It adopts a detachable three-piece valve body structure with extended butt-weld ends, allowing the valve to integrate with welded piping systems while keeping the sealing components and internal structure away from the direct heat of the welding area. The precision-cast valve body provides a stable construction, while the full-bore design supports smooth flow and reduced flow resistance. The valve is available with an optional lockable handle for controlled operation.
The extended butt-weld ends help create a greater distance between the welding area and the valve's internal components, reducing the risk of seal and internal structure damage caused by high welding temperatures. The three-piece split structure also allows convenient disassembly for inspection, cleaning, and maintenance. With a working pressure of 1.6–2.5 MPa and an operating temperature range of –20°C to 120°C, or up to 250°C under specified conditions, the valve can handle common media including water, oil, and gas.
3-Piece Extended-Weld Ball Valve is suitable for industrial process pipelines, water systems, oil and gas applications, and other welded piping systems requiring reliable flow isolation. OEM and ODM services are available to support customized valve sizes, weld-end dimensions, materials, operating temperatures, pressure ratings, handle configurations, and other project-specific requirements.
| Design Features: Precision-cast valve body Anti-disengagement valve stem Full-bore design Optional lockable handle Working pressure: 1.6–2.5 MPa Operating temperature: –20°C to 120°C (250°C) Suitable media: water, oil, gas, etc. |
Main Components and Materials
| No. | Components | Main materials |
| 1 | Valve body | WCB CF8 CF8M CF3M |
| 2 | Valve seat | PTFE RPTFE |
| 3 | Ball | 304 316 316L |
| 4 | Valve bonnet | WCB CF8 CF8M CF3M |
| 5 | Valve bonnet | 304 |
| 6 | Nut | A2-70 304 |
| 7 | Bolt | A2-70 304 |
| 8 | Valve stem | 304 316 316L |
| 9 | Thrust washer | PTFE RPTFE |
| 10 | Packing | PTFE RPTFE |
| 11 | Gland | 304 |
| 12 | Handle | 201 304 |
| 13 | Spring washer | 304 |
| 14 | Nut | A2-70 304 |
| 15 | Locking device | 201 304 |
| 16 | Handle sleeve | Plastic |
Main dimensions (mm)
| Dimensions | Φd | L | H | W | |
| 1/4" | DN6 | 10.5 | 52 | 95 | |
| 3/8" | DN10 | 12 | 52 | 95 | |
| 1/2" | DN15 | 15 | 244 | 55 | 100 |
| 3/4" | DN20 | 20 | 250 | 63 | 115 |
| 1" | DN25 | 25 | 257 | 75 | 125 |
| 1-1/4" | DN32 | 32 | 265 | 81 | 145 |
| 1-1/2" | DN40 | 38 | 273 | 95 | 160 |
| 2" | DN50 | 49 | 288 | 110 | 175 |
| 2-1/2" | DN65 | 65 | 307 | 131 | 220 |
| 3" | DN80 | 78 | 330 | 140 | 240 |
| 4" | DN100 | 98 | 170 | 315 | |
The dimensions above are for reference only.
| Design Features: Precision-cast valve body Anti-disengagement valve stem Full-bore design Optional lockable handle Working pressure: 1.6–2.5 MPa Operating temperature: –20°C to 120°C (250°C) Suitable media: water, oil, gas, etc. |
Main Components and Materials
| No. | Components | Main materials |
| 1 | Valve body | WCB CF8 CF8M CF3M |
| 2 | Valve seat | PTFE RPTFE |
| 3 | Ball | 304 316 316L |
| 4 | Valve bonnet | WCB CF8 CF8M CF3M |
| 5 | Valve bonnet | 304 |
| 6 | Nut | A2-70 304 |
| 7 | Bolt | A2-70 304 |
| 8 | Valve stem | 304 316 316L |
| 9 | Thrust washer | PTFE RPTFE |
| 10 | Packing | PTFE RPTFE |
| 11 | Gland | 304 |
| 12 | Handle | 201 304 |
| 13 | Spring washer | 304 |
| 14 | Nut | A2-70 304 |
| 15 | Locking device | 201 304 |
| 16 | Handle sleeve | Plastic |
Main dimensions (mm)
| Dimensions | Φd | L | H | W | |
| 1/4" | DN6 | 10.5 | 52 | 95 | |
| 3/8" | DN10 | 12 | 52 | 95 | |
| 1/2" | DN15 | 15 | 244 | 55 | 100 |
| 3/4" | DN20 | 20 | 250 | 63 | 115 |
| 1" | DN25 | 25 | 257 | 75 | 125 |
| 1-1/4" | DN32 | 32 | 265 | 81 | 145 |
| 1-1/2" | DN40 | 38 | 273 | 95 | 160 |
| 2" | DN50 | 49 | 288 | 110 | 175 |
| 2-1/2" | DN65 | 65 | 307 | 131 | 220 |
| 3" | DN80 | 78 | 330 | 140 | 240 |
| 4" | DN100 | 98 | 170 | 315 | |
The dimensions above are for reference only.