Turbine Drive Mode Carbon Steel Material Floating Ball Valve
Adopted standard
·Design and manufacture: GB / T 12237 flanged and butt welded ball valves
·Structural length: GB / T 12221 structural length of metal valves
·Connection end: GB / T 9113.1 integral steel pipe flange
·Inspection and test: GB / T 26480 inspection and test of valves
Connection size
| Type | DN | L | φ4 | φ3 | φ2 | b-f | Z-Φd | H |
| Q341F-16C | 50 | 200 | 165 | 125 | 99 | 20-2 | 4-Ф18 | 140 |
| 65 | 220 | 185 | 145 | 118 | 20-2 | 8-Ф18 | 155 |
| 80 | 241 | 200 | 160 | 132 | 20-2 | 8-Ф18 | 182 |
| 100 | 280 | 220 | 180 | 156 | 22-2 | 8-Ф18 | 208 |
| 125 | 320 | 250 | 210 | 184 | 22-2 | 8-Ф18 | 249 |
| 150 | 360 | 285 | 240 | 211 | 24-2 | 8-Ф22 | 277 |
| 200 | 400 | 340 | 295 | 266 | 24-2 | 12-Ф22 | 328 |
Main part material
| Main part | Material |
| Body | WCB |
| Stem,Ball | 2Cr13 |
| Seal,packing | PTFE |
Possible faults and elimination methods
| Possible faults | Cause of failure | Fault elimination method |
| Leakage of sealing surface | 1. The middle flange bolts are loose.
2. The sealing surface is damaged. | 1. Evenly tighten the middle flange bolts.
2. Trim the sealing surface or replace the parts. |
| Packing leakage | 1. Insufficient packing.
2. Packing is not compacted. | 1. Add filler.
2. Compact packing |
| Leakage at middle mouth | 1. The Sino French pad is damaged or invalid.
2. The middle flange bolts are not tightened. | 1. Replace the middle flange gasket.
2. Evenly tighten the middle flange bolts |
Storage, installation and use instructions
1. The product shall be stored in a dry warehouse and shall not be stored in the open air.
2. For long-term storage, regular maintenance is required.
3. This product can be installed at any position of the pipeline or equipment, but it should be easy to open and close.
4. Pressure test shall be carried out before installation, and installation can only be carried out if it meets the requirements.
5. Clean the pipe and valve cavity before installation.
6. The product shall not be subjected to large external force after installation.
7. The position of the handle indicates that the valve is open or closed. The handle is opened when it is parallel to the pipeline axis, and closed when it is perpendicular to the pipeline axis.
8. The operating conditions shall be consistent with the requirements of the performance specifications.
