BHS Filtration

Pressure Plate Filter

General Description

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The BHS Pressure Plate Filter provides for thin-cake pressure filtration, cake washing, drying, reslurry and automatic discharge as well as heel filtration in an enclosed, pressure vessel. Units are available from 0.17 m2 up to over 45 m2 of filter area per vessel.

Pressure Plate Filters are installed for clarification and recovery applications from liquids with low solids content with 5% to less than 1% solids and trace amounts.   

Technical Description

A filter cake is filtered onto a set of horizontal, slightly conical filter plates – arranged in a stack inside a pressure vessel. The filtrate passes through the filter media to a central manifold from where it leaves the pressure vessel. Following the process steps of filtration, washing, extraction, steaming, blowout or hot drying, the filter cake is vibrated from the set of plates by two unbalanced motors. 

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Field of application

  • Operation up to 10 bar
  • Operation temperature up to 250°C
  • Cake thickness up to 80 mm
  • Batch and semi-continuous operation
  • Solids content from trace amounts up to 5 %
  • Particle size distributions from 0.5 um to over 40 µm

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Technical Data

Technical Details









  Plate diameter
















  Number of Plates





4 - 12

7 - 30

16 - 30

   Filter area





1.7 - 5

5.5 – 23.4

24 - 45



  • Metallic products contacting the product:  carbon steel, stainless steel, alloys, lined-vessels 
  • Filter fabric:  Synthetic materials, stainless steel and alloys

BHS Pressure Plate Filter Advantages

Horizontal Plate Design: Mounting the filter plates horizontally ensures that stable cakes can be built. This enables pre-coating of the filter medium with activated carbon or diatomaceous earth if necessary.
Automatic Solids Discharge: Significant labor savings with an automatic cake discharge and the elimination of operator exposures to VOC emissions.
Vibrating Discharge: Most pressure plate filters employ a centrifugal solids discharge system. Spinning the plates at high speed often causes the cake to stick to the vessel walls and transmits large dynamic forces to the vessel and surrounding equipment. The BHS unique vibrating discharge system ensures effective solids discharge, while avoiding these problems. Gas assist can also be employed for cake discharge
No Mechanical Seals: The vibrating discharge system eliminates the need for rotating or mechanical seals. Therefore, the potential for leaks and mechanical failure is eliminated.
Flexibility: The BHS Pressure Plate Filter is easily cleaned; including automatic CIP systems and can cope with a wide variety of applications. With filtration area ranging from 0.1m² to 45m².

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