Tuesday, July 7, 2020

Pressure rating of wafer butterfly valve


Q: Hello valve, what is the pressure level of butterfly valve? What is the maximum pressure of butterfly valve?
Answer: clip butterfly valve can be divided into two types, clamp hard seal butterfly valve and clip soft seal butterfly valve.
The maximum pressure of the butterfly valve can be 16 kg, that is, 1.6 MPa, which can be used in water, gas, oil medium pipeline. If the pressure exceeds 16 kg, the soft seal seat material will be damaged due to excessive pressure, which will affect the sealing performance of the valve.
It is recommended that the maximum pressure applicable to the clamp hard seal butterfly valve should not exceed 4MPa. Although the structure of the hard seal can withstand high pressure, the pressure bearing capacity of the clamp type connection is not as good as that of the flange connection. If the pressure is too high, it may cause leakage at the joint between the butterfly valve and the flange.
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