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| F & A |
| What is a high-performance butterfly valves, characteristics and application scope |
The traditional butterfly valve is a low-voltage (<1.6Mpa>) midline rubber lined butterfly valve, which is characterized by butterfly plate axis in the flow passage and sealed with the center valve rubber lined. This butterfly is a nationality outside help to make butterfly plate and rubber-phase extrusion, in order to achieve the necessary sealing pressure to cut off the flow over. This funding, described as a mandatory sealed sealed. Obviously, the drawback is:
1. Sealing difficult to control than the pressure.
2. Wear big, short life, domestic life is 2000 times the standard requirements.
3. Only applies to low pressure.
4. Commonly used water, gas, oil medium
5. Torque.
High-performance butterfly valve is 70 years abroad, developed a new butterfly species, derived from space technology. Its technical features are:
1. Butterfly plate rotation center axis and sealed with the pipe cross-section relative deviation, in the switching process is not in contact with the sealing seat, no wear, only in the closing moments before in contact with the sealing seat.
2. Sealing seat is a flexible seal structure, applied principles of media to achieve a reliable seal sealing effect, completely changed the traditional butterfly valve sealing principle compulsory.
3. Funding, described as high-performance butterfly valves, their characteristics: long life and environmental testing laboratory life of up to one million times, geometric multiples higher than the useful life of the center line butterfly valve; torque lighter than the center line butterfly valve can be reduced by 30 %; application of pressure on a wide range of working pressures up to 10MPa, applicable to a variety of media.
This butterfly's development, so that the pressure valve in the larger context of class to replace the valve, the valve of its weight is only 1 / 3, the price is about the same gate of the 2 / 3, in the industrial field with a wide range of application prospects. |
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