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Duplex Filter Housing

Efficient Filtration | Long Service Life | Customizable Options

Our Duplex Filter Housing is the ultimate solution for continuous liquid filtration in industrial applications. Designed for efficiency and durability, it ensures uninterrupted operation, protects critical equipment, and meets the highest industry standards.

When fluid enters the filter housing, it passes through a filter screen tailored to specific specifications. Solid impurities are effectively trapped, and the clean filtrate is discharged through the outlet. For cleaning, the removable filter housing can be easily detached, cleaned, and reinstalled, making maintenance quick and hassle-free.

Dual-Stage Switching Filter for Continuous Operation

A standout feature of the Duplex Filter Housing is its dual-stage switching mechanism. By utilizing two three-way ball valves, the system integrates two single-cylinder filters on a shared base. This design enables seamless cleaning without interrupting operations, ensuring uninterrupted performance and maximum efficiency.

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Technical Specifications

ParameterDetails
Housing Material20#, 304 (CF8), 304L (CF3), 316 (CF8M), Other special materials
Filter Element Material304, 304L, 316, 316L, Other special materials
Nominal Diameter/Nominal PressureDN15–1500mm, PN0.6–20.0MPa
Filter Accuracy10 mesh–500 mesh or higher
Connection TypeButt Welding or Socket Welding (I), Flange Connection (II), Threaded Connection (III)
Flange StandardHG, GB, HGJ, JB, ANSI, JIS, DIN, BS, NF
Sealing SurfaceRaised Face (RF), Flat Face (FF), Male and Female Face (MFM), Tongue and Groove Face (TG)
Operating TemperatureCarbon steel: -30°C to +350°C, Stainless steel: -80°C to +480°C
Surface FinishCarbon steel: Anti-corrosion paint, Stainless steel: Acid washing or anti-corrosion paint
Design StandardsSH/T3411-1999, HG/T21637

Features and Benefits of the Duplex Filter Housing

Our Duplex Filter Housing is designed to deliver exceptional performance, reliability, and ease of use. Here’s what makes it stand out:

Continuous Operation

Seamless switching between two filters ensures uninterrupted workflows, allowing cleaning or maintenance without halting production.

Durable Materials

Constructed from corrosion-resistant stainless steel, the housing is built to withstand harsh environments and ensure long-lasting performance.

Multi-Stage Filtration

Supports multi-stage filtration to meet a wide range of filtration requirements, from fine filtration to pre-treatment processes.

Customizable Options

Available in various sizes, materials, and configurations to suit specific industrial needs, ensuring a perfect fit for your application.

Features and Benefits of Duplex Filter Housing

High Filtration Precision

Advanced filter elements capture particles as small as 1 micron, ensuring superior fluid purity for even the most demanding applications.

Easy Maintenance

The removable filter housing and accessible design make cleaning and replacing filter elements quick and hassle-free, minimizing downtime.

Self-Cleaning Functionality

Some models feature a reverse flushing system, reducing manual maintenance and enhancing operational efficiency.

Integrated Monitoring Tools

Equipped with pressure and differential pressure gauges to monitor system performance and alert you when maintenance is required.

Components

Filter Housing

Our filter housing is available in stainless steel or carbon steel, offering exceptional corrosion resistance, high-pressure tolerance, and durability. Its design includes inlet/outlet ports for pipelines, as well as a drain port for impurity discharge.

Filter Elements

We use high-precision microporous cartridges or bags with pore sizes ranging from 0.1 to 5 microns. These elements efficiently remove microscopic particles and colloids, ensuring reliable filtration performance.

Pressure and Differential Pressure Gauges

Our Duplex Filter Housing is equipped with pressure monitoring tools to track the inlet and outlet conditions. Differential pressure indicators alert you when the filter elements require cleaning or replacement.

Switching Valves

We use durable three-way or four-way valves to manage liquid flow paths. These valves are available with manual, pneumatic, or electric actuation for flexible operation.

Control System

The integrated control system, featuring advanced sensors and controllers, automates the opening and closing of switching valves for seamless operation.

Sealing Components

We utilize high-quality sealing rings and gaskets to prevent leaks and maintain a secure connection between the filter housing and pipes.

Duplex Filter Housing Product Structure

Duplex Filter Housing-6

Features and Benefits

Continuous Operation

We understand the importance of uninterrupted workflows. Our Duplex Filter Housing incorporates two single-cylinder filters connected by directional control valves. This setup enables seamless switching between operational and maintenance modes, allowing filter cleaning or replacement to occur without stopping production.

High Filtration Precision

Our filters are equipped with advanced filter elements that can capture particles as small as 1 micron. Whether you require filtration of water, oil, or other materials, the system ensures superior results, making it ideal for applications with stringent quality requirements.

Easy Maintenance

Replacing or cleaning the filter elements is a hassle-free process that does not require specialized tools. This accessibility minimizes downtime and ensures efficient system management.

Multi-Stage Filtration

Our Duplex Filter Housing supports multi-stage filtration, accommodating a range of filtration requirements. It provides flexibility for applications that demand fine filtration or pre-treatment processes.

Self-Cleaning Functionality

Some models feature a reverse flushing system, which enhances operational efficiency by reducing manual maintenance needs.

Applications of the Duplex Filter Housing

The Duplex Filter Housing is a versatile solution designed to meet the filtration needs of a wide range of industries. Here are some specific examples of how it can be applied:

Installation and Maintenance

  1. Protect the Filter Element
    The filter element, comprising the filter housing and stainless steel mesh, is the core component of the filter. Since the stainless steel mesh is prone to wear, it requires careful handling and protection to ensure optimal performance.

  2. Regular Cleaning to Prevent Blockages
    Over time, impurities accumulate within the filter element, leading to increased pressure drop and reduced flow rate. To maintain efficiency, it is crucial to clean the filter element regularly and remove any impurities.

  3. Handle with Care During Cleaning
    When cleaning the filter element, take extra care to avoid deforming or damaging the stainless steel wire mesh. Any damage to the mesh can compromise the purity of the filtered medium, potentially leading to equipment damage, including compressors, pumps, and instruments.

  4. Replace Damaged Components Immediately
    If the stainless steel wire mesh becomes deformed or damaged, it must be replaced promptly to ensure the filter continues to meet design specifications and protect your equipment effectively.

Ordering Instructions

To ensure we provide the most suitable product for your needs, please specify the following parameters when placing your order:

  1. Nominal Diameter
  2. Operating Pressure
  3. Material
  4. Flange Standard
  5. Medium
  6. Operating Temperature

Providing these details will help us deliver a product that meets your exact requirements.

Frequently Asked Questions

Discover detailed answers to common questions about our Duplex Filter Housings, helping you make informed decisions with ease.

What are duplex filter housings, and what are they used for?

Duplex filter housings are used for continuous filtration of liquids in various industrial applications. They allow for uninterrupted operation by enabling one filter vessel to be in use while the other is offline for maintenance or replacement. This design ensures efficiency and minimizes downtime.

What are the benefits of using a duplex filter system?

Duplex filter systems offer continuous filtration, reduced downtime for maintenance, and the ability to handle varying filtration requirements efficiently while maintaining a low pressure drop.

How often should the filter elements be cleaned or replaced?

The frequency of cleaning or replacing filter elements depends on the type of filter, the application, and the level of contaminants in the system. As a general guideline:

  • For light-duty applications, inspect and clean the filter elements every 3-6 months.
  • For heavy-duty or high-contaminant environments, more frequent maintenance may be required, such as monthly or bi-monthly checks.
    Always refer to the manufacturer’s recommendations for your specific filter model to ensure optimal performance.

What certifications does the Duplex Filter Housing meet?

Our Duplex Filter Housings are designed to meet industry standards and certifications, including:

  • ISO 9001: Ensuring quality management and manufacturing processes.
  • ASME (American Society of Mechanical Engineers): Compliance with pressure vessel standards.
  • FDA Compliance (if applicable): For food-grade or pharmaceutical applications.
    Please check the product specifications or contact our support team for detailed certification information for your specific model.

What materials are used in the construction of the Duplex Filter Housing?

Our Duplex Filter Housings are typically constructed from high-quality materials such as stainless steel (304 or 316 grades) to ensure durability, corrosion resistance, and compatibility with various applications. Custom material options may also be available upon request.

Can the Duplex Filter Housing handle high-pressure applications?

Yes, our Duplex Filter Housings are engineered to handle high-pressure applications. The maximum pressure rating varies by model, so please refer to the product datasheet or consult our technical team for specific pressure limits.

What are the benefits of using a Duplex Filter Housing?

  • Continuous Operation: Allows for uninterrupted filtration by switching between two filter chambers.
  • Ease of Maintenance: Simplifies cleaning and replacement of filter elements without halting operations.
  • Versatility: Suitable for a wide range of industries, including water treatment, oil and gas, and chemical processing.

How do I select the right Duplex Filter Housing for my application?

Consider the following factors when choosing a Duplex Filter Housing:

  • Flow rate and pressure requirements.
  • Type and size of contaminants to be filtered.
  • Material compatibility with the fluid being processed.
  • Certification and compliance needs for your industry.
    Our team is available to assist you in selecting the best solution for your specific needs.

Shipping and Delivery Information

  • Lead Times: Vary by order quantity; typically within 1 week for standard units, with customization options available.
  • Shipping Options: Includes EXW, FOB, CIF, and DDU, with free shipping in Germany for orders over €250 (region-specific).
  • Delivery: Export-standard packaging ensures safe transit. For large orders, suppliers may offer logistics support (e.g., 3PL services).

Warranty and Support

  • Standard Warranty: Ranges from 1 to 10 years, depending on the product. For example:
    • 5-year warranty on duplex water softening systems (extendable with maintenance).
    • 10-year limited warranty on heavy-duty housings (1 year full coverage, 9 years parts-only).
  • Support Services: Includes on-site engineer assistance, technical support, and PLC monitoring for proactive maintenance.

Certifications and Compliance

  • ISO 9001:2015 ensures quality management standards.
  • ASME/ANSI: Compliance for pressure vessel safety (e.g., Section VIII Division 1).
  • FDA/NSF: For food-grade and water treatment applications.
  • CE/RoHS: Electromechanical safety and environmental compliance.

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