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Welding ball valve for heating
Welded ball valves are widely used in various fields, and their superior quality and high performance stability are not achieved by ordinary cast steel ball valves
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Application
Welded ball valves are widely used in various fields, and their superior quality and high performance stability are not achieved by ordinary cast steel ball valves. All-welded ball valve is widely used in city gas, city heating, petrochemical, shipbuilding, steel, pressure regulating station, power plant and other pipeline equipment.
Characteristic
• Body structure integral welding to avoid external leakage phenomenon;
• The valve is compact, light weight, easy to keep warm and easy to install;
• Seat composed of PTFE seal ring and spring to pressure and temperature change adaptability, reliable sealing, long life;
• The valve body material is the same as the pipe material, so that the stress is not uniform, and the vehicle will not be compressed and deformed due to the earthquake and the ground;
• Valve connection: welding, thread, flange and other options for users;
• The valve is driven by worm gear and worm drive, manual, pneumatic or electric.
Design Guides
| Design and manufacture | Structure length | Flange connection size | Inspection and test | Pressure and temperature reference |
| NB/T47044、GB/T37827 | GB/T37827 | GB/T9124.1、 JB/T79 | GB/T 13927 | GB/T 13927 |
Product Range
| Nominal pressure | PN2.5、PN6、PN10、PN16、PN25 | |
| Nominal size | DN15～DN500 | |
| Body matenal | 20、A105、Q345R、304 | |
| Test pressure(MPa) | Strength test (Water pressure) | 1.5×P(38℃ pressure rating) |
| Sealing test (Water pressure) | 1.1×P(38℃ pressure rating) | |
| Applicable Temperature | -29℃～425℃ | |
| Applicable medium | Steam, water, etc | |
Note：
1、The valve beyond the above specifications can be customized according to user requirements;
2、The applicable temperature range of each valve shall be subject to the actual pressure bearing material of the valve.