Manual Butterfly Valve Structure Detailed Diagram

    Manual butterfly valve refers to the need to manually pull the handle or turn the hand wheel to control the opening and closing or thr butterfly valve,manual butterfly can be soft sealed,can also be hard sealed:It can be iron or it can be steel.Manual butterfly valves can be divided into common middle-line manual butterfly valves,double-eccentric manual butterfly valves, and three-eccentric manual butterfly valves according to their structure.The following general valve will introduce you to the detailed diagram of the structure of the manual butterfly valve.

PS:Center libe manual butterfly valve structure diagram La9 general diagram

    The structure of the middle line butterfly valves is characterized by the axis,the center of the butterfly plate and center of the body in the same position.Common middle butterfly valve are mostly soft sealed,and the sealing surface material is tubber of fluorine plastic.There in also ventilation butterfly valve is also the middle line structure.

    The middle line butterfly valve can only be used in low pressure environment because of its own structure,and the maximum pressure of the soft-sealed middle line butterfly valve is 16KG;The maximum pressure of the ventilated butterfly valve is 6KG.

  PS:double eccentric manual butterfly valve structure diagram 

  The structure characteristic of double eccentric butterfly valve is that the stem axis deviates from the center of the butterfly plate and from the center of body.Double eccentric butterfly valves can be made of soft seal,can also be made of hard seal,so that the double eccentric butterfly valve in the range of use is more extensive than the middle line butterfly valve.Double eccentric butterfly valve is also a low pressure valve,not resistant to high pressure;However.the double eccentric butterfly valve can adapt to high temperrature coditions after using a hard sealing material.

   PS;Three eccentric manual butterfly valve structure diagram

The structure of the three-eccentric butterfly valave is characterized by the stam axis deviating from the center of the butterfly plate and the center of the body at the sane tine,and the rotation axis of the valve seat has a certain Angle with the body channel axis.The triple-eccentric butterfly valve inherits the advantages of the double-eccentric butterfly valve that can be made into a soft seal or a hard seal.At the same time,the triple-eccentric butterfly valve is a multi-level seal,and the sealing performance is comparable to that of the soft-sealed middle-line butterfly valve,and it can also be used in high temperature and high pressure environments.

    The article is end,thanks for reading~~~