i love butterfly
06-03-2011, 03:13 PM
|i love butterfly
Butterfly valve flap valve, and that is a kind of simple structure regulator, also can be used in low pressure pipe medium switch control.
Butterfly butterfly valve refers to close a (disc or butterfly plate) to the disk around the axis rotation, to open and shut down a valve, in line with has a mainly cut and throttling. Butterfly valve opening and closing a is a disc shaped in the body of the butterfly plate, within its own axis rotate around, so as to achieve the purpose of opening and closing or adjust. Butterfly valves open to less than 90 ° is usually fitted, butterfly and butterfly pole itself has no self-locking ability, to butterfly plate localization in the valve stem, adding worm gear reducer. Use the worm gear reducer can not only make the butterfly plate with self-locking ability and make the butterfly plate to stop at any place, still can improve the valve operating performance. Industrial specialized butterfly valves characteristic ability, apply pressure range and high temperature is higher, the valve nominal diameter is big, the body using carbon steel manufacturing, the valve plate by the seals metal ring instead of rubber ring. Large high temperature butterfly valves USE the steel plate welding manufacturing, mainly used for high temperature medium of smoke duct and gas pipes. Butterfly valves in the opening, the body of the butterfly plate front with formed by valve shaft for mouth shapes formed center, two side complete different state, side of the butterfly plate front-end downstream water direction and move, another side counter-current water.
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