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The revolutionary SperryLok polypropylene flush plate and frame plate stack can be operated at higher pressure-temperature combinations without fear of frame failure, meaning shorter cycles and improved safety.

The heart of the ALL NEW SperryLok polypropylene plate and frame filter press plate stack is a patented sealing system that ''locks'' the plate and frame together when the press is closed and under normal clamping pressure.

This unique sealing system allows a higher operating pressure-temperature combination than the standard Polypropylene flush plate and frame design.

The likelihood of the frame bowing and/or blowout with this new design is nearly non-existent thus safety is dramatically improved.

All existing feed and discharge porting arrangements and all existing fabric and/or paper media can be utilized with this all new SperryLok design.



  • Operate at higher pressure-temperature combinations
  • Eliminate potential frame bowing/blowout that may occur with standard flush Polypropylene plate and frames
  • Improved safety
  • Reduced cycle time
  • Can replace cast iron flush plate and frames to reduce weight
  • Allows continued use of paper media
  • Can retrofit existing filter presses.



Industrial Wastewater:

  • Pigments and Dyestuff
  • Battery Reclamation
  • Boiler Blowdown
  • Tank Bottoms
  • Electroplating and Polishing
  • Vibratory Finishing
  • Cooling Tower Sludge
  • Printed Circuit Boards
  • Retention Ponds and Pits
  • Paint Sludge
  • Aluminum Extruding and Anodizing
  • Electrochemical Machining and Deburring
  • Ground Water Remediation
  • Industrial Laundries
  • Water Based Inks
  • Wood Treatment Process Solutions
  • Landfill Leachates
  • Creosote Sludge
  • Ash and Lime Pit Sludge
  • Copper Salt Sludge
  • Slop Oils
  • Chrome Wastes
  • Leather Fines
  • Steel Mill Waste
  • Scrubber Sludge
  • API Separator Bottoms


Municipal Water and Wastewater:

  • Lime Softening
  • Alum Sludge
  • Aerobically Digested Waste
  • Anaerobically Digested Waste
  • Primary Waste

Industrial Processes:

  • Pharmaceuticals
  • Pigment and Dyestuff Manufacturing
  • Clay Slips
  • Completion Fluids
  • Precious Metal Precipitates
  • Plating Cell Bottoms
  • Drilling Muds
  • Plating Tank Clarification
  • Titanium Dioxide
  • Ore Concentrates
  • Acid Clarifications
  • Lead Reclamation
  • Oil Field Brine Solutions
  • Catalysts
  • Protein Extractions
  • Silicone Fluids
  • Silicate Production
  • Viscose Spinning Dope
  • Uranium Production


Food and Beverage Process and Wastewater:

  • Wine
  • Beer Mash
  • Yeast Manufacturing
  • Sugar Syrups
  • Bakery
  • Candy Manufacturing
  • Food Color Manufacturing
  • Whey and Waste Products
  • Poultry Processing
  • Tank Bottoms and Final Finishing
  • Juice Pulp Removal and Polishing
  • Protein Precipitation

Telephone 630-892-4361 -- Fax 630-892-1664 -- Toll Free 1-888-997-9297