Butterfly valve advantages:
Butterfly valve easy to open and close quickly, labor saving, fluid resistance is small, can often operate.
Butterfly valve simple structure, small size, short structure length, small volume, light weight, suitable for large diameter valves.
Mud can be transported with minimal fluid accumulation at the pipe mouth.
Butterfly valve at low pressure, can achieve a good seal.
Good regulation performance.
When the butterfly valve is fully open, the effective flow area of the valve seat channel is large and the fluid resistance is small.
The opening and closing torque is small, because the disc on both sides of the rotating shaft is basically equal to the action of the medium, and the direction of the torque is opposite, so the opening and closing force is less.
Sealing surface material generally adopts rubber, plastic, so the low pressure sealing performance is good.
Butterfly valve faults;
Butterfly valves have a small operating pressure and temperature range.
Butterfly valve seal is poor.
