Pictured is a bag filter vessel configured as a pre-filter to remove larger particles and debris from fluids such as diesel, jet fuel, or process water. Often positioned at the front end of a multi-stage filtration system, this vessel helps protect downstream filters like coalescers and final polishers. Available in single or multi-bag designs, bag filter vessels are commonly used in terminals, manufacturing facilities, and chemical processing plants where high dirt-holding capacity is required.