Butterfly closed parts

Butterfly is closed parts (disc or disc) to disk, around the valve axis to achieve the opening and closing a valve in the pipeline from the off and throttling the main use. Valve opening and closing is a disc-shaped pieces of the disc, the valve body around its own axis of rotation, or adjustments to achieve the purpose of opening and closing. Valve fully open to fully closed is usually less than 90 °, butterfly valves and butterfly stroke itself is not self-locking capability, in order to position the disc to install the valve stem on the worm gear reducer. With worm reducer, not only can make the disc with self-locking capability, so that the disc stops at any position, but also to improve the operational performance of the valve.Welcome to our website to see more products,eg:Pump casting product