Davit Arm Multi-Bag Filter

The CMI Davit-Arm Multi-Bag Filter Housing is engineered for demanding industrial environments where safety, stability, and frequent maintenance access are critical.
Its heavy-duty integrated davit arm allows the lid to swing open horizontally without being lifted or removed, ensuring maximum operator safety during bag change-outs.

The side-inlet / bottom-outlet design ensures complete drainage, while the tangential bottom outlet reduces vessel height and simplifies installation in compact spaces.

This model is ideal for high-flow, medium-to-high pressure, and continuous industrial filtration processes, such as chemicals, solvents, coatings, and RO pretreatment.
ASME Section VIII, Division 1 fabrication is available upon request.

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Product Overview

The CMI Davit-Arm Multi-Bag Filter Housing is engineered for demanding industrial environments where safety, stability, and frequent maintenance access are critical.

Its heavy-duty integrated davit arm allows the lid to swing open horizontally without lifting or removal, ensuring maximum operator safety during bag replacement.

The side-inlet and bottom-outlet configuration enables complete drainage, while the optional tangential outlet design reduces vessel height and simplifies installation in compact layouts.

This model is ideal for high-flow, medium-to-high pressure, and continuous filtration processes, including chemicals, solvents, coatings, and RO pre-treatment systems.

All housings can be designed and manufactured in accordance with ASME Section VIII, Division 1 upon request.

Key Features

  • Heavy-duty davit-arm mechanism
    Eliminates the need for lid lifting and minimizes risk of accidental dropping—maximizing operator safety.
  • Horizontal swing-open design
    Enables smooth opening and closing, even for large-diameter or heavy-lid housings.
  • High structural stability
    Designed for continuous operation under fluctuating flow and pressure conditions.
  • Complete drainage configuration
    Side inlet and bottom outlet minimize residual liquid and improve maintenance safety.
  • Zero-bypass bag support system
    Prevents bag displacement under high flow, ensuring consistent filtration performance.
  • Universal filter bag compatibility
    Compatible with standard Size 1 and Size 2 filter bags (metal or plastic ring).
  • High-quality surface finish
    Options include bead-blasted or electropolished interior (Ra ≤ 0.8 μm).

Specifications

Bag SizeSize 1 / Size 2
Number of Bags3 / 4 / 6 / 8 / 12 … up to 24
Design Pressure10–16 bar
Design TemperatureUp to 120°C
MaterialSS304 / SS316L (Duplex / Carbon Steel upon request)
Gasket OptionsBuna / EPDM / Viton / PTFE
ConnectionsFlange / BSP / NPT / Tri-Clamp
Outlet TypeBottom outlet (tangential optional)
Surface FinishPickling / Bead Blasting / Electropolishing (Ra ≤ 0.8 μm)

Technical Data — Davit-Arm Multi-Bag Filter Housing

Model Bag Size No. of Bags Flow Rate (m³/h) Max Pressure (bar) Max Temperature (°C) Filter Area (m²) Inlet / Outlet
MF2A2-10-030A-SA#02280101201.03″–4″
MF3A2-10-030A-SA#023120101201.53″–4″
MF4A2-10-040A-SA#024160101202.03″–6″
MF5A2-10-040A-SA#025200101202.54″–6″
MF6A2-10-060A-SA#026240101203.04″–6″
MF8A2-10-060A-SA#028320101204.06″–8″
MF10A2-10-080A-SA#0210400101205.08″–10″
MF12A2-10-080A-SA#0212480101206.08″–10″
MF14A2-10-080A-SA#0214560101207.08″–10″
MF16A2-10-100A-SA#0216640101208.08″–12″
MF18A2-10-120A-SA#0218720101209.010″–14″
MF20A2-10-140A-SA#02208001012010.010″–16″
MF22A2-10-160A-SA#02228801012011.012″–18″
MF24A2-10-180A-SA#02249601012012.014″–18″

Flow rate is based on water (1 cP). Actual performance may vary depending on viscosity, bag rating, and operating conditions.

Options

  • Steam jacket or insulation
  • Hygienic tri-clamp configuration for food & beverage applications
  • Custom inlet / outlet orientation
  • JIS / DIN flange connections

Accessories

  • Magnetic bar for metallic particle removal
  • Mesh basket to convert housing into basket strainer
  • Displacement balloon for easier bag replacement
  • Differential pressure gauge or transmitter
  • Pump integration (skid-mounted systems available)

Applications

  • Chemical Processing
  • Pharmaceutical
  • Food & Beverage
  • Paint & Coatings
  • Automotive Coating
  • Oil Refining
  • Marine Industry
  • Water Treatment

Why Choose Davit-Arm Opening?

Opening Type Safety Cost Level Opening Speed Pressure Suitability Typical Applications
Davit Arm Very High Medium Fast Medium–High Chemicals, solvents, continuous operation systems
Eye Bolt Moderate Low Moderate Low–Medium General water treatment, OEM projects
Quick-Opening High High Very Fast Low–Medium Coatings, resins, frequent bag replacement

Davit-arm design is the safest and most stable solution for large-diameter vessels, high-pressure systems, and heavy-duty industrial applications.

Recommended For

  • Large-diameter filter housings
  • High-temperature or high-pressure conditions
  • Heavy-duty or continuous operation systems
  • Projects with strict safety requirements

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Our fabrication experts are ready to help you with custom-made filter housing and fabricated metal filter vessel solutions. Contact us with your specific requirements for a customized quote.