Plug the four major structural features: 1) Plug valve is the history of the first people to adopt the valve. Due to its simple structure, quick opening and closing (plug rotation 1 / 4Q circle can complete the opening and closing action), easy operation, small fluid resistance, is still widely used. Currently mainly used for low pressure, small diameter and medium temperature is not high circumstances. (2) Plug valves in the pipeline is mainly used to cut off, upgrade and change the direction of medium flow. It is easy to adapt to multichannel structures so that two, three, or even four different flow paths are available for one valve, which simplifies the design of the piping system and reduces the amount of valve space required and the number of connection fittings required in the equipment. (3) Plug valve fluid through the DC, resistance, easy opening and closing, rapid. (4) According to the structural characteristics of the plug valve and the design can achieve the function.
The extruder machine has single screw machine and twin screw machine. A variety of puffed food snacks can be produced by adjusting the Dies.
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