AAL FRP Bag Filter Housing Corrosion-Resistant, Durable, and Engineered for Industrial Filtration

The AAL FRP Bag Filter Housing, designed and manufactured by AAL Filter, is built with premium glass fiber reinforced plastic (FRP), ensuring excellent corrosion resistance, high structural strength, and long-term stability even in demanding industrial environments. Compatible with both #1 (Φ180mm × 430mm) and #2 (Φ180mm × 820mm) standard filter bags, this housing provides reliable performance for pre-filtration, coarse filtration, and medium-precision liquid treatment applications.

As a key part of the AAL Filter FRP product portfolio, AAL Filter offers a wide range of FRP-based filtration solutions, including melt-blown cartridge housings, bag filter housings, high-flow cartridge housings, and combined multi-stage filtration systems. This ensures full compatibility across various flow rates, processes, and installation requirements.

The system supports a variety of filtration consumables such as PP melt-blown cartridges, #1/#2 filter bags, and high-flow pleated cartridges, and can replace equivalent cartridges from leading brands including Pall, Parker, and 3M. This gives users greater flexibility, cost efficiency, and supply chain stability on a global scale.

With its lightweight construction, easy maintenance, corrosion-resistant design, and long service life, the AAL FRP Bag Filter Housing delivers reliable, high-efficiency performance for a wide range of industrial liquid filtration applications.

Key Features

1. Advanced Fiberglass Winding Construction for Superior Durability

Manufactured with high-strength fiberglass winding technology, the housing delivers exceptional corrosion resistance, high pressure tolerance, and zero-leakage performance—perfect for seawater, chemical, and harsh industrial applications.

2. Innovative Internal Structure for Reliable Sealing and Easy Installation

The bottom structure integrates a sealed support and guiding mechanism to ensure smooth installation of filter bags or cartridges. The top positioning and sealing chamber includes an adjustable nut for fine-tuning sealing performance, ensuring optimal filtration efficiency.

3. Fully Compression-Molded FRP Components for Maximum Strength

All major components are made from compression-molded FRP, offering excellent mechanical strength, chemical resistance, and long-term structural stability in demanding environments.

4. Tool-Free Maintenance with Manual Lifting Ring

The manual lifting ring allows operators to open or close the housing without tools, significantly reducing maintenance time and simplifying filter replacement.

5. Built-in Guiding Structure for Automatic Alignment

The internal guiding system ensures automatic alignment during installation of filter bags or cartridges, preventing misalignment and ensuring fast and precise operation.

6. Designed for Standard #1 and #2 Filter Bags

Compatible with #1 (Φ180×430 mm) and #2 (Φ180×820 mm) filter bags, the housing supports various flow rates and filtration levels, making it ideal for pre-filtration, coarse filtration, and medium-precision applications.

7. Large Filtration Area with Higher Dirt-Holding Capacity

The bag-type design offers a significantly larger filtration surface, enabling higher dirt retention, longer service cycles, and reduced operational cost—especially effective for high-solid-content fluids.

8. Secure Bag Sealing System for Zero Bypass

A stable bag-clamping and sealing mechanism prevents bypass flow, ensuring filtration integrity and consistent outlet quality.

9. Compatible with Multiple Filter Bag Brands for Supply Flexibility

Supports a variety of PP, PE and nylon filter bags, and is fully interchangeable with equivalents from Pall, Parker, and 3M—providing better supply chain flexibility and cost savings.

10. High-Quality Surface Coating with Customizable Colors

The eco-friendly, durable coating enhances corrosion protection while providing an attractive appearance. Custom colors are available to match customer branding or facility requirements.

Working Principle

AAL Filter FRP filter housings are pressure-type liquid filtration units designed for use with filter bags or filter cartridges. During operation, the incoming liquid enters the housing under pressure and flows through the selected filtration media. Suspended solids and contaminants are captured either on the media surface or within its depth structure, while the filtered liquid exits the housing, achieving stable and efficient purification.

Depending on the chosen filter media, the filtration rating ranges from 0.5 to 100 μm, effectively removing suspended solids, colloids, fine particles, and other impurities. With excellent corrosion resistance, lightweight construction, and high mechanical strength, FRP housings are widely used in industrial water treatment, drinking water purification, seawater desalination pre-filtration, and chemical processing applications. 

Model Specifications

Installation Dimensions

Specifications

Max Working pressure: 0.8 MPa       Dimension unit: mm

Tips: The inlet and outlet connections can be selected as flange, clamp, or threaded type. The inlet and outlet sizes are available in DN40, DN50, DN65 and DN80.

Working Temp : 5-66℃ . 

Applications

The AAL FRP Bag Filter Housing is widely used across industries that require strong corrosion resistance, high reliability, and consistent filtration performance, including:

● Industrial water treatment and cooling water systems

● Chemical processing and corrosive liquid filtration

● Seawater desalination and pretreatment

● Food and beverage production

● Electroplating, electrophoresis, and metal finishing

● Environmental protection and wastewater treatment

● Pharmaceutical, fine chemical, and process filtration

AAL Filter’s FRP filtration solutions ensure stable operation, higher efficiency, and lower operating costs under challenging industrial conditions.

Special Note

Improper operation of pressure vessels may lead to equipment damage or personal injury. Users must ensure that the housing is always operated within its designed pressure range. It is strongly recommended that installation, commissioning, and maintenance be carried out by trained and experienced technicians to ensure system safety and reliability.

Precautions

1.Verify that the filter bag or cartridge is correctly installed, and rotate the locking block by 60° to secure it in place.

2.Do not exceed the maximum working pressure of 6 kg/cm².

3.Before system startup, open the air-release valve to expel internal air, and close it once the system is fully filled with liquid.

4.Ensure the inlet–outlet pressure difference does not exceed 1.5 kg/cm²; replace the filter media promptly if the pressure drop rises above this limit. 

Your Reliable Partner for Durable FRP Bag Filtration – High Capacity and Corrosion-Resistant
Enhance the efficiency, stability, and safety of your liquid filtration system with the AAL FRP Bag Filter Housing. Engineered for corrosion resistance, long service life, and high dirt-holding capacity, it delivers consistent performance in seawater treatment, chemical processing, food & beverage production, and general industrial applications.

Whether you are upgrading an existing line or building a new filtration process, discover how our FRP bag filter housings can meet your flow, pressure, and operational demands with ease.

Contact us for product manuals, quotations, or replacement assistance — we’re ready to support your filtration needs.