The one-way pressure butterfly valve is that when the side of the butterfly plate is closed, it must face the flow direction of the medium; the medium only moves in one direction, and the valve body has an arrow indicating the direction of the medium movement. When installing, pay attention to the moving direction of the medium.
The two-way pressure butterfly valve can face or face the flow direction of the medium. It is not necessary to pay attention to the flow direction of the medium during installation, and there is no arrow indicating the flow direction of the medium on the valve body. The force of the valve stem of the two-way butterfly valve is greater than that of the one-way butterfly valve. Butterfly valves with the same diameter and the same pressure, the stem diameter of the two-way sealing butterfly valve is larger than that of the one-way sealing butterfly valve.
Therefore, the biggest difference between the one-way pressure butterfly valve and the two-way pressure butterfly valve is that the two-way pressure butterfly valve can reach 100% zero leakage under the full pressure difference regardless of the forward and reverse pressure. Two-way metal hard seal.
