gate valve export

A butterfly valve is a closed piece (valve flap or butterfly plate)
For discs, rotating around the valve shaft to achieve opening and closing of a valve in the pipe Mainly cut-off and throttle.
The opening and closing part of the butterfly valve is a disc-shaped butterfly plate,
Rotate around its own axis in the valve body for the purpose of opening and closing or regulating 。 The butterfly valve is fully open and fully closed is usually less than 90 degrees