Hava system Iran pulse jet filters are designed to filtrate polluted air with dry dust content. According to flow rate and application, pulse jet dust collectors are designed in 4 types as below : -Bag filter : the design for medium capacity flow rate. -Bag house : a development of bag filter type which specially designed for high capacity filtration. -Workshop : economic design for low capacity filtration (340 to 2100 m3/h). -Bin filter : designed to be installed above the silos, batch plants and cabins. Among these types Bag filters and Bag houses are manufactured in both modular and integral designation. In modular design, units can be arranged beside each other, which enable them to be arranged according to client`s installation limits. On other hand, compartments are completely separated so service and maintenance can be done during filtration function.