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Bag Filter Housing

Durable, Efficient, and Versatile Filtration Solutions

Bag filter housing is one of the most versatile and practical solutions for industrial filtration. Designed to house filter bags of various sizes and materials, our bag filter housings are engineered to remove contaminants from liquids with high efficiency and reliability. They are widely used across industries to maintain process integrity, protect downstream equipment, and ensure product quality.
Our bag filter housings are adaptable to different applications and can be configured to fit single or multiple bag filters. With options for various materials, including stainless steel, carbon steel, and polypropylene, these housings meet diverse operational needs, such as resistance to high pressures, temperatures, and corrosive chemicals.

Single Bag Filter Housing

The Single Bag Filter Housing is a compact and efficient solution for industrial liquid filtration needs. Built with durability in mind, it is designed to accommodate a single filter bag, making it ideal for lower flow rates or targeted filtration processes.

Multi-Bag Filter Housing

Multi-bag filter, suitable for high-flow filtration, capable of accommodating more impurities, and ideal for applications where filter bags need to be replaced after extended use. Single-unit high flow rate of 600 tons per hour. Daily maintenance is highly convenient.

Filtering Operations and Precautions:

Single-bag filters are easy to operate. Install the filter bag of the required mesh size into the filter housing. Check that the O-ring seal is intact. Then, tighten the ring bolts on the filter housing cover. The unit is now ready for operation.

After the pump starts, the pressure gauge on the filter machine will rise slightly, with an initial pressure of approximately 0.05 MPa. As usage time increases, filter residue will gradually accumulate inside the cylinder. When the pressure reaches 0.4 MPa, stop the machine, open the cylinder cover, and inspect the filter bag for residual debris. The filter bag can be replaced and reused (filter bags can generally be reused after cleaning).

The filter pressure should generally be adjusted to 0.1-0.3 MPa, which is appropriate. This can be adjusted via the return pipeline or the return valve on the pump. Excessively high filter pressure may damage the filter bag and protective mesh, so extra caution is required.

Main applications:

Paint, beer, vegetable oil, pharmaceuticals, chemical drugs, petroleum products, textile chemicals, photosensitive chemicals, electroplating solutions, milk, mineral water, hot solvents, latex, industrial water, sugar water, resins, ink, industrial wastewater, fruit juice, edible oil, waxes, etc.

Technical Specifications

Standard bag filter parameters:
	A(mm)	B(mm)		C(mm)	D(mm)	E(mm)	F(mm)	Maximum flow rate (m³/h)	Inlet and outlet dimensions
Model		Max.	Min.
ZQMDS-4	650	780	600	485	400	390	220	10	DN32
ZQMDS-1S	790	847	723	588	495	455	260	20	DN50
ZQMDS-2S	1530	1217	958	958	865	785	260	45	DN50

Types of Bag Filter Housings

Single Bag vs. Multi-Bag Filter Housings

When it comes to bag filter housings, we offer both single bag and multi-bag options to suit varying filtration needs. A single bag filter housing is designed for low to medium flow rates and is ideal for applications where compact and economical solutions are needed. It accommodates one filter bag per housing, making it straightforward to install and maintain.

On the other hand, multi-bag filter housings are designed for high-flow applications and more demanding filtration requirements. These housings can contain multiple filter bags, enabling higher filtration capacity and reduced downtime during operation. Industries dealing with large volumes of liquid, such as water treatment and chemical processing, benefit significantly from the efficiency of multi-bag filter housings. We recommend multi-bag systems for operations requiring scalability and heightened filtration performance.

Material Options: Stainless Steel vs. Carbon Steel

Selecting the appropriate material for your bag filter housing is essential to ensure durability and compatibility with your application. Our bag filter housings are available in stainless steel and carbon steel.

Stainless Steel is an excellent choice for challenging environments where resistance to corrosion, chemicals, and high temperatures is required. It is especially suitable for food processing, pharmaceutical applications, and other industries prioritizing hygiene and long-term reliability.
Carbon Steel, while less resistant to corrosion than stainless steel, offers high tensile strength and is a cost-effective option for less aggressive filtration applications. This material is ideal for industries where operating conditions do not involve corrosive substances, such as general manufacturing or outside environmental exposure.

We also provide specialized coatings and treatment options to enhance material performance in demanding industrial environments, ensuring your housing meets your operational standards.

Choosing the Right Size for Your Filtration Needs

Selecting the right size for your bag filter housing is crucial for ensuring operational efficiency and achieving desired filtration results. Consider the following factors to guide your decision:

Flow Rate: Determine the required flow rate for your application. Single bag housings are better suited for lower flow rates, while multi-bag housings can handle significantly higher volumes.
Particle Load: Evaluate the volume and type of particles needing filtration. High particle loads may necessitate a multi-bag housing to ensure effective particle capture and longer operational life.
Application Requirements: Examine the specific requirements of your industry and application. For instance, filtration in the chemical sector may demand housings with high-pressure ratings and corrosion-resistant materials.
Maintenance and Accessibility: Larger operations with demanding maintenance schedules may benefit from systems designed for easier bag changes and cleaning.

By understanding your system’s operational needs, we can help you choose the appropriate bag filter housing size to maximize performance and minimize downtime. If you are unsure about which size or model best fits your needs, our technical support team is available to assist you in making the optimal selection.

Each detail of our bag filter housings is crafted to meet rigorous industry standards and provide long-lasting filtration solutions. Contact us today to explore how our filtration systems can best support your application.

How to Choose the Right Bag Filter Housing?

Key Factors to Consider in Selection

When selecting a bag filter housing, we believe understanding your specific filtration needs is the foundation for making the right choice. Key factors to evaluate include:

Material Compatibility: The housing material must withstand the chemical properties and temperatures of the filtered media. Stainless steel is ideal for corrosive or high-temperature environments, while carbon steel offers a cost-effective solution for less aggressive conditions.
Pressure and Temperature Ratings: Ensure the housing can handle the operating pressure and temperature of your application to maintain safety and performance.
Filtration Efficiency: Determine the micron rating required for effective filtration. This will guide the choice of filter bags and housing designs suited to capture the desired particle size.
Maintenance Requirements: Look for designs that allow easy access for bag changes and cleaning, especially if frequent maintenance is necessary.

We recommend consulting with our technical team to align these considerations with the housing options available, ensuring optimal performance and longevity.

Understanding Flow Rates and Size Requirements

Flow rate and size are critical factors in achieving efficient filtration. Single bag filter housings are well-suited for applications with lower flow rates and periodic filtration tasks. Conversely, for high-volume operations, a multi-bag housing provides enhanced capacity and reduces downtime.

To determine the appropriate size:

Calculate your system’s flow rate in gallons per minute (GPM) or liters per minute (LPM).
Assess particle loads to ensure the housing can accommodate your filtration demands without compromising flow.
Factor in scalability for potential future capacity increases.

By carefully analyzing these metrics, we can help tailor your housing selection to meet precise operational requirements.

Common Applications for Bag Filter Housings

Bag filter housings are versatile and used across various industries due to their efficiency and adaptability. Here are some common applications:

Water Treatment: Effective for removing particulates and contaminants, ensuring clean water for potable or industrial use.
Chemical Processing: Used to filter aggressive media, maintaining product purity and system reliability.
Food and Beverage: Ensures compliance with sanitation standards by filtering impurities from oils, liquids, and other consumables.
Pharmaceuticals: Designed to meet strict filtration requirements while protecting product integrity.
General Manufacturing: Handles filtration of paints, coatings, adhesives, and coolants to improve product quality and protect equipment longevity.

Our range of bag filter housings is designed to accommodate a variety of applications, offering solutions that meet rigorous industry standards. If you need support in selecting the right housing for your industry, our dedicated team is here to assist you.

Installation and Maintenance of Bag Filter Housings

Step-by-Step Installation Guide

Proper installation is crucial to ensure the effective operation of our bag filter housings. Below is a step-by-step guide to help you get started:

Prepare the Installation Area: Clear the designated area of obstructions and ensure it meets the housing’s space requirements. Verify that the surface is level and capable of supporting the housing’s weight.
Inspect the Housing Components: Before installation, inspect all components for damage or defects. Confirm that you have the correct size and type of housing and filter bags for your application.
Position the Housing: Carefully place the housing at the installation site. Align the inlet and outlet connections with your pipeline system.
Connect the Piping: Secure the inlet and outlet connections using appropriate fittings. Ensure all seals are tight to prevent leaks, but avoid over-tightening, which may damage the housing or gaskets.
Install the Filter Bag: Open the housing lid and place the filter bag into the internal basket, ensuring it is seated securely and evenly. Close and secure the lid, making sure the gasket is properly aligned to maintain a tight seal.
Perform a Pressure Test: Gradually pressurize the system to test for leaks. If leaks are detected, isolate the system, resolve the issues, and re-test.
Operational Start-Up: Once the system is secure and leak-free, gradually introduce the media to the housing, monitoring flow rates and pressure for stability.

Following these steps ensures a smooth installation process. For detailed specifications, refer to our installation manual or contact our technical support team.

Maintenance Tips for Longevity

Routine maintenance is essential for extending the lifespan and ensuring the reliable performance of bag filter housings. Here are our key tips for upkeep:

Regular Inspections: Check the housing components for wear and tear, corrosion, or damage. Pay particular attention to the lid gasket, seals, and connections.
Monitor Pressure Differentials: Keep track of pressure drops across the filter bag. Significant increases indicate a clogged filter that needs replacing.
Scheduled Cleaning: Periodically clean the housing interior during filter bag replacements to prevent sediment buildup that may affect performance.
Use Quality Spare Parts: Replace worn components, such as baskets or gaskets, with certified parts to maintain compatibility and reliability.
Adhere to Manufacturer Guidelines: Always follow our operational and maintenance recommendations for optimal results.

Regular servicing not only preserves performance but also reduces unexpected downtimes. If you have specific concerns, our service team is available for consultations.

Identifying and Replacing Spare Parts

Over time, certain parts of the bag filter housing may require replacement. Here’s how to identify and replace them:

Common Parts to Monitor: Key components such as the lid gasket, O-rings, support baskets, and clamps tend to experience wear due to continuous operation.
Identification Process: Inspect components during servicing for visible damage, loss of flexibility (for gaskets), or signs of corrosion. Pressure tests may also reveal performance issues related to compromised parts.
Replacing Components:
1. Shut down the filtration system and relieve pressure before accessing the housing.
2. Remove and replace the affected parts, ensuring proper alignment and secure installation.
3. Reassemble the housing and conduct a pressure test to verify the efficacy of the replacement.

We recommend keeping a stock of essential spare parts for timely replacements, reducing downtime. Our support team can guide you in sourcing the right components based on your specific housing model and operational needs.

With proper installation, consistent maintenance, and timely replacement of parts, our bag filter housings are built to deliver robust performance and longevity. If you require any further assistance, reach out to us—we’re here to help!

Common Problems with Bag Filter Housings

Identifying Seal and Leakage Issues

Seal integrity is critical for the proper functioning of bag filter housings, as it ensures unfiltered fluid does not bypass the filter bag. Leakage issues typically arise from improper gasket alignment, wear and tear on components, or incorrect installation.

To address these issues:

Inspect the Gaskets and O-Rings: Regularly check for cracks, deformation, and loss of elasticity. Faulty gaskets are the most common cause of poor sealing.
Ensure Proper Installation: During setup, make sure the filter bag is correctly seated, and the lid is tightened evenly and securely to avoid gaps.
Check for Corrosion: Corrosion can erode sealing surfaces over time, reducing the housing’s ability to maintain a leak-free fit.

We recommend performing regular system checks and replacing worn gaskets or seals with certified spare parts to maintain optimal sealing performance. If leaks persist, consult our technical team to diagnose the root cause and find a permanent solution.

Dealing with Clogged Filter Bags

Clogged filter bags can hinder filtration performance, reducing flow rates and causing system inefficiencies. This problem often results from an accumulation of particles exceeding the bag’s capacity or delays in replacing used bags.

To manage clogged filters effectively:

Monitor Pressure Drop: A consistent rise in pressure differential across the housing indicates a clogged bag that requires replacement.
Establish a Replacement Schedule: Implement a maintenance routine based on application demands to prevent overloading and extend the life of filter bags.
Ensure Proper Bag Selection: Use filter bags with an appropriate micron rating and material for your specific application. Bags not designed for your filtration needs can clog prematurely.

By proactively monitoring and replacing filter bags, you can preserve system flow rates and achieve consistent filtration results. For assistance in selecting the right filter bags, contact our team of experts.

Understanding Pressure Ratings and Their Impact

Operating a bag filter housing within its designated pressure rating is vital for safety and performance. Exceeding these limits can cause housing deformation, seal failure, or even catastrophic damage.

To prevent pressure-related problems:

Verify System Conditions: Confirm that your operating pressure matches the housing’s pressure rating specified in the product manual.
Install Pressure Relief Valves: These safeguard your system by releasing excess pressure, preventing damage to the housing.
Conduct Routine Pressure Tests: Regular testing ensures the housing remains structurally sound and operating within safe parameters.

If system pressures unexpectedly increase, it may indicate issues such as clogged filters or line blockages. Addressing these promptly can prevent damage to your filter housing and connected equipment.

By understanding and addressing these common challenges, we ensure that our bag filter housings deliver reliable performance over extended periods. For tailored support or maintenance advice, reach out to our technical support team, and we’ll be glad to assist you in troubleshooting and optimizing your filtration systems.

Table of Contents

Bag Filter Housing FAQs

Q: What is a bag filter housing and what applications is it used for?

A: A bag filter housing is a type of filtration system designed to hold filter bags or cartridges, typically used in liquid filtration applications. It is commonly utilized in industries such as food processing, pharmaceuticals, and water treatment to remove contaminants from liquids.

Q: What materials are commonly used in the construction of bag filter housings?

A: Bag filter housings are often constructed from materials such as 304 stainless steel and polypropylene, providing durability and resistance to corrosion. The choice of material depends on the specific application and the type of liquid being filtered.

Q: How do I determine the right size of bag filter housing for my filtration needs?

A: The right size of bag filter housing can be determined by considering the flow rate of the liquid, the type of filter bag or cartridge used, and the specifications of the filtration system. It is essential to refer to application worksheets and consult with manufacturers to ensure proper sizing.

Q: Can bag filter housings accommodate different types of filter cartridges?

A: Yes, bag filter housings can accommodate various types of filter cartridges, including single bag filters and duplex systems. Depending on your filtration needs, you can select the appropriate filter cartridge that fits the housing.

Q: What is the difference between a single bag filter and a duplex bag filter?

A: A single bag filter consists of one filter bag housed in a vessel, whereas a duplex bag filter features two bag housings that allow for continuous operation. The duplex design enables one filter to operate while the other is being cleaned or replaced, minimizing downtime.

Q: How do I clean or replace the filters in a bag filter housing?

A: Bag filter housings are designed to be easily cleaned or replaced. Typically, you can remove the filter bag or cartridge from the housing, clean the interior of the vessel, and then install a new or cleaned filter. It is important to follow the manufacturer's guidelines for the specific model.

Q: What considerations should I keep in mind when selecting a filter vessel?

A: When selecting a filter vessel, consider factors such as the type of liquid being filtered, the flow rate, the pressure (psi), and the overall design requirements. Additionally, ensure that the chosen vessel complies with industry standards, such as ASME code, for safety and reliability.

Q: Are there any accessories available for bag filter housings to enhance their performance?

A: Yes, various accessories can enhance the performance of bag filter housings, including gauge installations for monitoring pressure, flanges for secure connections, and baskets for additional filtration. These accessories can improve the efficiency of the filtration system.

Q: How do bag housings compare to cartridge filter housings in terms of filtration efficiency?

A: Bag housings generally offer a larger surface area for filtration compared to cartridge filter housings, which can enhance liquid filtration efficiency. However, the choice between the two depends on the specific application requirements, including the type and amount of contaminants present in the liquid.