Disadvantages of pneumatic sanitary butterfly valve
1. The overall dimensions and opening height are relatively large.
For example, suppose there is a water tank with a cover. Water enters from the bottom of the cylinder and flows out from the cylinder port. The cylinder head is equivalent to the closed part of the valve. If the cylinder head is lifted by hand, it is equivalent to the working principle of the stop valve. If the cylinder head is moved to the side by hand, it is equivalent to the working principle of the gate valve.
2. Design standard: GB/T, connection standard:
3. The movement forms of the valve stem include the lifter type (the valve stem is raised and lowered, and the hand wheel is not raised), and the valve stem type (the hand wheel and the valve stem are raised) are put together, and then the nut is placed on the valve body). The stop valve is only applicable to full opening and full closing, and can be adjusted and throttled when customized. When the closing valve is opened, when the opening height of the valve disc is 25% to 30% of the nominal diameter, the flow has been reached, indicating that the valve has reached the fully open position.
