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Fixed ball valve is a new generation of high-performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, reliability, and resistance to harsh environments have been specially considered in the design, and it is suitable for various corrosive and non corrosive media. Compared with floating ball valves, during operation, all the force generated by the fluid pressure in front of the valve on the ball is transmitted to the bearing, which will not cause the ball to move towards the valve seat. Therefore, the valve seat will not bear excessive pressure, so the torque of the fixed ball valve is small, the deformation of the valve seat is small, the sealing performance is stable, and the service life is long. It is suitable for high-pressure and large-diameter applications. Advanced spring pre seat components with self tightening characteristics achieve upstream sealing. Each valve has two valve seats, which can seal in each direction, so there is no flow restriction during installation, and it is bi-directional. This valve is generally installed horizontally.
The main characteristics of a ball valve are its compact structure, reliable sealing, simple structure, and easy maintenance. The sealing surface and spherical surface are often in a closed state, which is not easily eroded by the medium and is easy to operate and maintain. It is suitable for general working media such as water, solvents, acids, and natural gas, and is also suitable for media with harsh working conditions. The contact parts between the ball valve and the medium are made of corrosion-resistant stainless steel. This soft sealed ball valve is used for general working media such as water, solvents, acids, and natural gas, and is also suitable for harsh working conditions such as corrosive media such as oxygen, hydrogen peroxide, nitric acid, acetic acid, caustic soda, etc. Soft sealed stainless steel flange ball valves are commonly used in medical and health equipment, food machinery, chemical acid and alkali corrosive equipment, and pipeline systems.
Product drawings
Product size
DN | d | L | D | D1 | D2 | C | f | N-ФM |
100 | 100 | 305 | 220 | 180 | 155 | 20 | 3 | 8-Ф18 |
125 | 125 | 356 | 250 | 210 | 185 | 22 | 3 | 8-Ф18 |
150 | 150 | 3994 | 285 | 240 | 210 | 24 | 3 | 8-Ф20 |
200 | 200 | 457 | 345 | 295 | 265 | 26 | 3 | 12-Ф20 |
250 | 250 | 533 | 410 | 355 | 320 | 30 | 3 | 12-Ф24 |
300 | 300 | 610 | 465 | 410 | 375 | 30 | 4 | 12-Ф24 |
350 | 350 | 686 | 525 | 470 | 435 | 34 | 4 | 16-Ф24 |
400 | 400 | 762 | 585 | 525 | 485 | 36 | 4 | 16-Ф27 |
450 | 450 | 864 | 645 | 585 | 545 | 40 | 4 | 20-Ф27 |
500 | 490 | 914 | 710 | 650 | 608 | 48 | 4 | 20-Ф30 |
600 | 585 | 1067 | 845 | 770 | 718 | 32 | 5 | 20-Ф36 |
Technical Data
1. Valve design and manufacturing shall comply with the standard GB/T 12237-2021
2. The structural length shall be in accordance with the standard GB/T 12221-2005
3. The flange size shall be in accordance with HG/T 20592-2009 standard
4. Inspection and acceptance shall be in accordance with the standard HG/T 20236-2021
Product Parts List
No. | name | Materials | No. | name | Materials |
1 | Body | CF8 | 15 | Upper Composite Set | PTFE+304 |
2 | Bolt | B7 | 16 | Land | A105 |
3 | Nut | 2H | 17 | Bonne | CF8 |
4 | Middle winding pad | 304+graphite | 18 | o-ring | VITON |
5 | o-ring | VITON | 19 | Packing | 304+graphite |
6 | Lower valve stem | 304 | 20 | Hexagon socket head cap screw | B7 |
7 | o-ring | VITON | 21 | Gland | 304 |
8 | Lower composite sleeve | PTFE+304 | 22 | locating pin | 45 |
9 | sphere | 304 | 23 | Bolt/Nut | 304 |
10 | o-ring | VITON | 24 | Bolt/Nut | 304 |
11 | spring | 60Si2Mn | 25 | spring washer | 65Mn |
12 | valve seat | PTFE | 26 | flat key | 45 |
13 | sealing ring | PTFE | 27 | worm gear | Assembly |
14 | Stem | 304 |
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