Butterfly valve has three types such as a linear, double eccentric type and three partial heart. Common butterfly valve is mainly used as a regulator and closure used in fluid pipeline, mainly used in construction, chemical industry, drainage, sewage, food, medicine, electricity, shipping and so on. There are the special working medium requirements recommend different valve body materials.
Seawater medium: recommended valve body selection of stainless steel materials, mainly for the seawater switch off and flow control, this situation is recommended to consider the main material, stainless steel will have a certain degree of corrosion.
Oxygen medium: this medium must be clear before the purchase of the valve, because we will manufacture butterfly valve when the use of strict oil treatment, the working conditions of the valve body recommended choice of high-quality stainless steel.
Corrosive media: the media must select corrosion resistant materials, we recommend the use of stainless steel and polytetrafluoroethylene (PTFE), because the corrosive medium damage is relatively large, the valve material requirements must use high quality butterfly valve.
Double eccentric butterfly valve features:
1, integral casting has double flange link.
2, double eccentric valve has long service life, with good regulation of flow characteristics.
3, spherical sealing structure is two-way sealing butterfly valve.
4, the butterfly plate adopts streamline design, small flow resistance.
5, high strength one-piece stem has standardized design, so that the design of the actuator is easy to replace.
6, replaceable standard sealing ring is easy to use to replace maintenance.
7, epoxy resin surface spraying technology is in line with drinking water standards.
8, the standard size manufacturing, comply with the national standard GB, American Standard etc..
Double eccentric butterfly valve installation instructions:
The correct installation and use can prolong the service life of the sanitary butterfly valve, we recommend the installation can be horizontal or vertical installation in the pipeline, in any possible installation please ensure that the stem and the ground level, such as working conditions do not allow, it is recommended that the stem and the ground slightly oblique angle, this installation can prevent the fluid particles in direct contact with the stem bearing, or contact will have a certain degree of damage to the valve in addition to the large diameter butterfly valve, the valve plate can bear the weight of the valve by the bearing, too much deviation is likely to cause some wear, in order to achieve the best performance and service life.
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