Filtech's direct pulse fabric filter unit is of the dust-tight compartmental type, containing filter bags attached to a tube sheet. The tube sheet seals the filter bag compartment from the top plenum, which also contains the exhaust opening for the cleaned air/gas. The bag cleaning mechanism consist of blow pipes, header pipe/air manifold with solenoid operated diaphragm valves energized and controlled by an electronic sequential pulse control timer. The compresed air is supplied to the blow pipes through diaphragm valves mounted on the header pipe/ compressed air manifold.