Multi-Bag Filter Housings

Multi-bag filter housings are designed for high-volume liquid filtration where greater flow capacity, increased contaminant-holding capacity, and efficient filter-bag servicing are required. By housing multiple filter bags within a single vessel, these systems distribute flow across several filtration elements, allowing significantly higher throughput than single-bag housings while maintaining a relatively compact installation footprint.

Using multiple bags increases the total available filtration area without requiring an individual filter bag to handle the entire process flow. This can provide higher capacity, longer operating intervals, and more consistent pressure-drop performance in demanding applications.

Key Benefits

  • High-Flow Filtration: Multiple filter bags provide substantially greater total filtration area than single-bag housings, supporting high-volume process streams.

  • Increased Dirt-Holding Capacity: Multiple bags distribute contaminant loading across several filtration elements, extending service intervals and overall capacity.

  • Reduced Pressure Drop: Dividing process flow among multiple bags can reduce flow velocity through each element and maintain favorable pressure-drop characteristics.

  • Efficient Maintenance: Multiple bags can be accessed through a single cover, allowing several filtration elements to be serviced during a single maintenance operation.

  • Reliable Bag Sealing: Dedicated bag hold-down and sealing arrangements help prevent unfiltered liquid from bypassing the filter media.

  • Operator-Friendly Covers: Spring-assisted, davit, or quick-opening cover mechanisms reduce the effort required to access large multi-bag vessels.

Typical Applications

  • Cooling water filtration

  • Chilled water systems

  • Condenser water systems

  • Process water

  • Industrial water treatment

  • Raw water filtration

  • Wastewater treatment

  • Boiler feedwater

  • Lubricating oil

  • Fuel filtration

  • Chemical processing

  • Petrochemical processing

  • Paints and coatings

  • Food and beverage processing

  • Pharmaceutical processing

Construction & Materials

  • Housing Materials: 304L and 316/L stainless steel options

  • Basket Material: Stainless steel perforated support baskets

  • Basket Perforation: Multiple perforation and mesh configurations available

  • Closure Options: Clamp, swing-bolt, davit-assisted, and quick-opening configurations

  • Connection Options: ANSI Flanged and other connection configurations

  • Gasket Options: Buna-N, EPR/EPDM, Silicone, and Viton/FKM

  • Available Sizes: Standard #02 double-length bags

  • Bag Capacity: 2 to 24 filter bags

  • Filtration Media: Polypropylene, polyester, nylon, felt, mesh and other options

  • Mounting: Heavy-duty support legs with adjustable configurations available

Performance Specifications

  • Design Pressure: Up to 150 psi (10 bar), dependent on configuration

  • Temperature Range: Up to 300°F (149°C), dependent on configuration

  • Flow Capacity: Up to 4,200 GPM (950 m³/h), dependent on configuration

Quality & Compliance

Multi-bag filter housings are manufactured using established industrial materials, including carbon steel and 304/316 stainless steel, with dimensional, material, pressure, and connection specifications controlled according to the selected configuration. Applicable configurations are available with ASME Section VIII, Division 1 code compliance and are manufactured under ISO 9001-certified quality management systems, with additional certifications available for specific applications and markets.