Membrane Filter Plate Manufacturer

LONGONE membrane filter plates deliver secondary diaphragm squeezing after standard filtration — reducing cake moisture, shortening cycle time and increasing throughput for wastewater, mining, chemical and food processing applications.

What Is a Filter Press Plate

membrane filter plate

A membrane filter plate (also called a diaphragm filter plate or diaphragm squeeze plate) is a filter press plate with a built-in flexible diaphragm. After standard pressure filtration forms a cake, compressed air or pressurized water inflates the membrane — applying uniform force across the entire cake surface to squeeze out residual moisture. The result is a drier, more homogeneous cake that is easier to discharge, wash and dispose of.

Filter

Pump drives slurry into the chamber. Liquid passes through the filter cloth; solids build into a cake at 6–16 bar.

Squeeze

Membrane inflates with air or water at 7–30 bar, compressing the cake evenly for additional moisture removal.

Wash / blow

Optional cake washing or air blowdown. Uniform cake thickness ensures even liquid distribution.

Discharge

Press opens; the drier, more homogeneous cake releases cleanly with less manual cleaning needed.

membrane plate types

fixed/Welded membrane plate

The membrane material is bonded or welded to the plate to form a whole. The membrane material will not detach under high pressure.

Replaceable membrane plate

Diaphragm swappable in the press without replacing the plate body — ideal for abrasive or corrosive slurries.

Mixed-pack design

Alternate membrane and chamber plates to reduce total plate-pack investment while retaining squeeze performance.

Technical specifications

  • Plate size:250 × 250 mm to 2000 × 2000 mm
  • Cake thickness:20 – 50 mm (customizable)
  • Feed type:Center / corner / side / top
  • Feed pressure:6 – 16 bar
  • Squeeze pressure:7 – 30 bar
  • Max temperature (PP):≤ 85 °C
  • Max temperature (PVDF):≤ 120 °C
  • Plate body:PP / GFPP / PVDF
  • Membrane:TPE / EPDM / NBR / FKM (Viton)
  • Gasket:EPDM / NBR / FKM
  • Medium options:Compressed air / pressurized water / liquid
  • Squeeze duration:15 – 45 min (typical)
filter press plates

Custom membrane filter plates

Every application has different slurry chemistry, pressure conditions and equipment constraints. LONGONE's in-house mold tooling and engineering team allows us to manufacture membrane filter plates from scratch rather than adapting standard stock — so your plates fit precisely and perform reliably from day one.

From Raw Plate to Precision Filter Plate

  • Our filter plates are produced through an automated, high-precision machining process.
  • First, the molded plate is loaded and positioned on a stable working table.
  • The CNC gantry trims the edges, mills the surface, and processes the sealing areas to ensure accurate dimensions.
  • Next, drilling and port machining are completed for feed holes, filtrate channels, and connection points.
  • During production, chips are removed and the plate surface is kept clean for consistent quality.
  • After machining, each plate is inspected for flatness, hole accuracy, surface finish, and appearance before stacking and delivery.
Get a Quote

Not sure which plate is right for you?

Share the details below and our engineers will recommend the optimal membrane plate configuration, diaphragm material and squeezing parameters — at no cost and with no obligation to buy.

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