Active Member
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[China]
Address: Jianshe South Street, Yuhua District, Shijiazhuang City, Hebei Province, China
Contact name:Ada Chen
China • Yuanda Valve Group Co., Ltd. |
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Stainless steel flanged ball valves require only a 90 degree rotation and a small rotational moment to close tightly. Completely equal valve body cavity for the medium provides little resistance, straight through the flow channel. Ball VALVES ARE GENERALLY CONSIDERED BEST FOR DIRECT OPENING AND CLOSING, BUT RECENT DEVELOPMENTS HAVE DESIGNED THEM TO THROTTLE AND CONTROL FLOW. The main feature of ball valve is its compact structure, easy to operate and maintain, suitable for water, solvents, acids and natural gas and other general working media, but also suitable for poor working conditions of media, such as oxygen hydrogen peroxide, methane and ethylene. Ball valve body can be integral, can also be combined. This type of valve shall be installed in the horizontal direction of the pipeline.
Stainless steel flanged ball valves work by rotating the stem to open or block the valve. Ball valve switch light, small size, can be made into a large caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface is often in the closed state, not easy to be media erosion, is widely used in various industries
| Type | DN | L | D | D1 | D2 | f | Z-Φd | H | T |
| Q41F-150LBP | 1/2 | 108 | 89 | 60.5 | 35 | 1.6 | 4-Ф16 | 76 | 3.7 |
| 3/4 | 117 | 98 | 70 | 43 | 1.6 | 4-Ф16 | 84 | 4 | |
| 1 | 127 | 110 | 79.5 | 51 | 1.6 | 4-Ф16 | 90 | 4.2 | |
| 1-1/4 | 140 | 115 | 89 | 64 | 1.6 | 4-Ф16 | 103 | 4.8 | |
| 1-1/2 | 165 | 125 | 98.5 | 73 | 1.6 | 4-Ф16 | 113 | 4.8 | |
| 2 | 178 | 150 | 120.4 | 92 | 1.6 | 4-Ф19 | 125 | 5 | |
| 2-1/2 | 190 | 180 | 139.7 | 105 | 1.6 | 4-Ф19 | 148 | 5.5 | |
| 3 | 203 | 190 | 152.4 | 127 | 1.6 | 4-Ф19 | 167 | 5.5 | |
| 4 | 229 | 230 | 190.5 | 157 | 1.6 | 8-Ф19 | 213 | 6 | |
| 5 | 356 | 255 | 215.9 | 186 | 1.6 | 8-Ф22 | 267 | 6.4 | |
| 6 | 394 | 280 | 241.3 | 216 | 1.6 | 8-Ф22 | 275 | 7 |
| Part Name | Material |
| Body | CF8 |
| Stem,Ball | F304 |
| O-ring,Packing | PTFE |
| Possible faults | The cause of the failure | Fault elimination method |
| 1. Leakage of sealing surface | 1. The middle flange bolt is loose. | 1. Tighten the middle flange bolt evenly. |
| 2. Damage to sealing surface. | 2. Repair the sealing surface or replace the parts. | |
| 2. Packing leakage | 1. Insufficient packing. | 1.Add filler. |
| 2. The packing is not tightly pressed. | 2.Press the packing tightly. | |
| 3. Leakage at the middle mouth | 1. The middle flange pad is damaged or invalid. | 1.Replace the middle flange gasket. |
| 2. Middle flange bolts are not tightened. | 2.Tighten the middle flange bolt evenly. |
1. This product should be kept in a dry warehouse and is strictly prohibited to be stored in the open air.
2. Long-term storage, regular maintenance.
3. This product can be installed in any position of pipeline or equipment, but it should be convenient to open and close.
4. Before installation, the pressure test should be carried out to meet the requirements before installation.
5. The pipe and valve cavity should be cleaned before installation.
6. The product shall not be subjected to a large external force after installation.
7. The position of the handle indicates whether the valve is open or closed. The handle opens when it is flat with the pipe axis, and closes when it is perpendicular to the pipe axis.
8. The operating conditions shall be consistent with the performance specification requirements
