Fully welded ball valve, the valve is composed of three independent forged parts that are welded together to form a single unit, ensuring that the ball valve is connected to the valve body without leakage under allowable working conditions. The product is mainly used in natural gas, petroleum, water and other media, suitable for pipeline use in residential heating, urban gas, petrochemicals, steel, shipbuilding, metallurgy, power stations, pressure regulating stations and other industries.
Product drawings
Connection size
| DN | PN | L | R | D | G1 | G2 | H | h | t | s |
| 65 | 25 | 300 | 3.5 | 50 | 108 | 76.1 | 134 | 53 | 5 | 290 |
| 80 | 25 | 300 | 4.5 | 65 | 127 | 88.9 | 142 | 65 | 5 | 310 |
| 100 | 25 | 325 | 5 | 80 | 159 | 114 | 172 | 75 | 6 | 380 |
| 125 | 25 | 325 | 5 | 100 | 194 | 140 | 189 | 77 | 7 | 400 |
| 150 | 25 | 350 | 6 | 125 | 219 | 168 | 210 | 82 | 8 | 430 |
| 200 | 25 | 400 | 7 | 150 | 273 | 219 | 258 | 107 | 8 | 430 |
Valve torque
| Nominal Diameter | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
| torque/.MI | 70 | 90 | 110 | 140 | 160 | 200 |
design basis
1.Valve design according toQ/320506 FDV01-20132：GB/T 12224-2005General Requirements for Steel Valves
2.GB/T 12220-1989General Valve Marking
3.GB/T 12223-2005《Connection of partial rotary valve driving device》
4.JB/T 12006-2014Steel Pipe Welded Ball Valve
5.GB/T 37827-2019Welded Ball Valve for Urban Heating
Product Parts List
| No. | name | Materials | No. | name | Materials |
| 1 | IGBT | 20# | 11 | branch pipe | 20# |
| 2 | take over | 20# | 12 | Valve stem O-ring | Fluoroplastic rubber FKM |
| 3 | ball | 304 | 13 | grommet | PTFE+C |
| 4 | valve seat | PTFE+C | 14 | Packing gland | 20# |
| 5 | Valve seat O-ring | Fluoroplastic rubber FKM | 15 | stop block | Q235 |
| 6 | SUPPORT RING | 60Si2Mn | 16 |
External retaining ring | 65Mn |
| 7 | disc spring | 60Si2Mn | 17 | handle | 25steel |
| 8 | Stem | 2Cr13 | 18 | Hexagonal socket set screw | 35steel |
| 9 | thrust pad | PTFE+C |
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| 10 | bearing | mild steel+PTFE |
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