High performance rubber lined butterfly valve

High-performance rubber-lined butterfly valve is an exquisitely structured rubber-lined butterfly valve, which is especially suitable for regulating or switching the flow and pressure of various tap water, industrial water, sewage, air, HVAC, city gas and liquefied petroleum gas. When closed, the valve is zero leakage.

1. The valve seat structure adopts the patented COS curve sealing structure, which reduces the friction between the valve plate and the valve seat, reduces the actuator torque, and extends the life of the seat ring. The sealing process is equivalent to a double eccentric valve.

2. The sealing surface of the valve plate of the butterfly valve is spherical, so that when sealing, the contact is quite smooth, especially the friction between the shaft seal is reduced. So that the life of the seat ring is greatly extended.

3. The metal embedded ring in the seat ring can automatically close the gap between the valve stem and the seat ring when the valve stem is tilted by the unbalanced force, eliminating the possibility of axial leakage.

COS curve

The COS curve sealing structure makes the valve plate have no torque increase before sealing. When sealing, the valve plate and the seat ring are in contact at the same time on a 360-degree circumference, thereby reducing friction, reducing torque, and extending the life of the seat ring. , To ensure that the butterfly valve can maintain zero leakage for a long time. At the same time, because of reduced friction and reduced torque, it is possible to use a low-power drive, thereby reducing the user's cost.

Spherically processed valve plate

The valve plate is processed as a complete sphere, each part of the sealing surface is a part of the spherical surface, the valve plate and the valve ring are processed on the same spherical surface, the gap between the two is small, no friction, and the valve plate rotates smoothly Even the axial sealing surfaces at the top and bottom of the valve plate are no exception. Such sealing surfaces are very smooth despite the contact, so the torque is reduced and the sealing performance is improved.