TKFM China factory standard common type handwheel operated casting ptfe butterfly valves dn80

Butterfly valve refers to the closure (disc or disc) for the disc, rotating around the valve shaft to open and close a kind of valve, the main cut off in the pipeline and throttle.Butterfly valve opening and closing parts is a disc-shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening and closing or adjusting.Butterfly valve fully open to the barrier is usually less than 90 °, butterfly valve and the adjustment lever itself has no self-locking ability, in order to butterfly plate positioning, to add worm gear reducer on the valve stem.Using worm gear reducer can not only make the butterfly plate with self-locking ability, make the butterfly plate stop at any position, but also improve the operating performance of the valve.The characteristics of industrial butterfly valve can withstand high temperature, applicable pressure range is also higher, the nominal size of the valve is large, the valve body is made of carbon steel, the sealing ring of the valve plate is made of metal ring instead of rubber ring.Large high temperature butterfly valve is manufactured by welding steel plate, mainly used for high temperature medium smoke duct and gas pipeline.