Duplex strainer, also known as parallel switching filter, using the two three-way ball valve, the two monocular filter assembly on a stand, don't have to stop when cleaning filter, ensure the continuous work, is a no parking line filter, filtering element of this filter, in addition to the stainless steel filter, may also have quality honeycomb degrease cotton fiber, can filter out particles of the particle size of more than 1 mu, this filter is use monocular, at this time only need to remove the stand together, the rest of the size remains the same. Reasonable has the advantages of novel structure, good sealing, flow capacity is strong, easy to operate, and many other advantages, wide application range, strong adaptability of multipurpose filtering equipment. Especially the small probability filter bag sliding sideways, to be able to guarantee the filtration precision, and can quickly change the filter bag, filter the basic no material consumption, reduce operating costs.

Scope of application:
1. Chemical, weak corrosively medium for petrochemical production, such as water, ammonia, oil, hydrocarbon, etc.  
2. Corrosive materials in chemical industry production, such as caustic soda, strong dilute sulphuric acid, carbonic acid, acetic acid, etc.