Duplex Filter Housing for Fruit Juice – 1000 L/h

Duplex filter housing for continuous liquid filtration

The 1000 L/h duplex filter housing is a mechanical filtration system designed to retain solid particles suspended in liquids during processing.

Its main feature is the presence of two independent, isolatable filtration circuits. These allow the filters to operate alternately, so filtration can continue through one circuit while the other is taken offline for cleaning.

Manufactured with an AISI 304 stainless steel structure, the system includes two 200 µm filter housings. A finer 100 µm filtration configuration is available on request.

This arrangement is particularly useful in fruit juice processing lines where mechanical filtration is required and interruptions for filter cleaning need to be limited.

How the duplex filtration system works

The system operates through two independent filtration circuits that can be used alternately.

During operation, the liquid passes through the active filter element, which retains solid particles according to the installed filtration rating.

When cleaning becomes necessary, the active circuit can be isolated and filtration can continue through the other filter. The isolated element is then available for cleaning without stopping the entire filtration process.

This arrangement is useful in continuous processing applications where filter elements require periodic cleaning.

Continuous filtration with alternating filter cleaning

The main advantage of a duplex filter housing over a single-filter system is the ability to alternate between two separate circuits.

With a single filter, cleaning may require filtration to be stopped. A duplex system allows one filter to remain active while the other is isolated for cleaning.

The main operational benefits include:

• Filtration continuity: one circuit can continue filtering while the other is cleaned.
• Alternating filter operation: the two circuits can be used in turn according to processing requirements.
• Cleaning during production: the isolated filter can be cleaned while the other remains operational.
• Reduced cleaning-related interruptions: filter maintenance can be organised during the filtration process.

Continuous operation depends on correct circuit management and the operating conditions of the installation.

Important: this is an alternating duplex filtration system, not a two-stage filtration system in which liquid passes consecutively through two filters with different filtration ratings.

200 µm filtration and optional 100 µm configuration

The duplex filter housing is supplied with two 200 µm filter elements. A 100 µm filtration configuration is available on request.

The micron rating indicates the reference particle size that the filtration system is designed to retain.

The standard 200 µm configuration provides coarser mechanical filtration than the 100 µm option. The latter is intended for processes requiring finer separation of solid particles.

The appropriate filtration rating should be selected according to the characteristics of the liquid, the suspended solids present and the required processing result.

Important: neither the 100 µm nor the 200 µm configuration provides sterilising microfiltration or should be considered a treatment for eliminating microorganisms.

Applications in fruit juice processing lines

The duplex liquid filtration system can be considered for mechanical filtration in fruit processing lines, particularly where solid particles need to be retained from the liquid product.

In a fruit juice production line, filtration may follow juice extraction or pulp separation, depending on the characteristics of the product and the requirements of subsequent processing stages.

The two independent circuits are particularly useful when filter elements require periodic cleaning without completely interrupting the filtration process.

Product compatibility must be evaluated according to liquid consistency, suspended solids concentration and operating conditions.

The declared flow capacity does not guarantee identical performance with liquids of different viscosities or solid particle concentrations.

Technical specifications

• Filter type: Duplex filter housing with two independent circuits.
• Number of filters: 2.
• Standard filtration rating: 200 µm.
• Optional filtration rating: 100 µm, available on request.
• Structure material: AISI 304 stainless steel.
• Circuit configuration: Independent and isolatable.
• Operating principle: Alternating filtration with cleaning of the isolated filter.
• Declared flow capacity: 1000 L/h.
• Loading height: 350 mm.
• Machine dimensions: 600 × 600 × 900 mm.
• Machine weight: 60 kg.

Why choose a duplex filter housing instead of a single filter?

The choice between a single filter and a duplex filtration system mainly depends on the need to maintain filtration during cleaning operations.

A single-filter system may be suitable when production can be interrupted for filter cleaning.

Where filtration continuity is important, a second independent circuit provides greater operational flexibility.

The duplex filter housing allows one filtering element to remain in use while the other is isolated for cleaning. This is particularly useful when cleaning frequency depends on the amount of suspended solids in the liquid.

The principal advantage is not necessarily a higher flow capacity than a single filter, but the ability to clean one filter without interrupting filtration through the other.

Frequently asked questions

Can filtration continue while one filter is being cleaned?

Yes. The two circuits are independent and can be isolated separately, allowing one filter to remain active while the other is cleaned.

Do both filters operate simultaneously?

The described configuration is intended for alternating operation to maintain filtration continuity. An increase in flow capacity through simultaneous use of both filters is not documented.

What is the difference between 100 µm and 200 µm filtration?

The 100 µm configuration provides finer particle separation than the 200 µm version. The appropriate rating depends on the particles to be retained and the characteristics of the liquid.

Are 100 µm filters included as standard?

No. The standard configuration includes two 200 µm filters. The 100 µm configuration is available on request.

What is the flow capacity of the duplex filter housing?

The declared flow capacity is 1000 L/h. Actual performance may vary according to the characteristics of the liquid and the operating conditions.

Does the system provide sterile filtration?

No. The available 100 µm and 200 µm filtration ratings are intended for mechanical separation of solid particles, not sterilising microfiltration.

Does the filter include an integrated pump?

The declared specifications describe the duplex housing system with two independent circuits. An integrated pump is not specified. The required liquid feeding system must be verified when configuring the installation.