Typical Membrane Filter Plate Operation

Detachable Membrane

• Long service life
• Maximum flexibility
• Easily replaceable
• Empty chamber design
• Membrane is not in compression with plate stack closed (plate to plate seal)
• Membranes are common and can be used on either side of the plate
• Replacements stocked for quick service
• Low maintenance costs
• Pip design provides uniform flex
• Lower replacement cost

Separate Body Plate

• All standard sizes
• Two web thicknesses for customer requirements
• Filtration pressures up to 100 psi (7 bar)
• Squeeze pressures up to 225 psi (16 bar)
• Operating temperatures up to 250 degrees F (120 C)
• Supplied with or without handles
• Body plate with or without staybosses
• Compatible with DIN standards

Membrane Squeeze Porting

• Air or liquid squeeze
• Common or individual squeeze porting
• Molded rib in body plate ensures distribution/evacuation of squeeze liquid
• Squeeze port connections can be located in any corner of the plate

Multiple Feed-Eye Options

• Middle center feed
• Off-center feed (upper or lower)
• Corner feed
• Patented membrane Feed-Eye Support prevents damage to membrane during squeeze cycle if chamber is empty or partially filled

Filter Cloth

• Center sleeve design eliminates need for cloth retaining clipnuts
• Center sleeve design provides fast change out of filter cloth

Mixed Packed Systems

• Recess or flush parallel companion plates are available to reduce cost and provide flexibility for cake thickness
• Companion plates are standard EnviroTech recess plates, providing a less expensive plate stack

Membrane Plate Materials

The following materials are available for a wide variety of applications:

• Replaceable Membranes
• EPDM Elastomers
• Nitrile Elastomers
• Thermoplastic Elastomers
• Body Plates
• Polypropylene
• Polypropylene - glass reinforced
• Nylon - glass reinforced
• PVDF (Kynar)®
• Other elastomer and thermoplastic materials are available for special applications

Filtrate Drain Porting

• Drain porting is in body plate, external from membrane
• Integrally molded-in drain channel
• Any standard recess plate porting available: washing, open, closed, with or without valves or drain cocks

Full Range of Sizes

• Recessed
• Caulked and gasketed
• Non-gasketed
• Center feed
• Corner feed
• 100 or 225 psi operation
• Parallel plates and frames

Patented Design

• Excellent cloth support
• Minimum cloth wear
• Greater plate strength
• Higher filtration rates
• Optimum cake formation
• Minimum web deflection

Molded In-Eyes and Drains

• Provides more cross-section area for improved filtrate flow
• Stronger plate in eye and drain channel areas

Choice of Filter Pressures

• Thick or thin webs for 100 psi or 225 psi operation

Molded-on Handles

• Greater strength than bolted or bonded-on handles
• Convenient hand hold openings for handling plates
• Bumper stops eliminate plate and handle deflection during automatic shifting
• Can be molded with customer name and logo
• Can be molded without handles for special applications

Filter Plate Materials

Multiple Thermoplastic Choices and Resin Development

• Polypropylene: Applications up to 175° F (80° C)
• Polypropylene - Glass Reinforced: Applications up to 212° F (100° C)
• Nylon - Glass Reinforced: Applications up to 250° F (120° C)
• PVDF (Kynar®): Applications up to 275° F (135° C)
• Other engineering thermoplastics for special applications
• Three decades experience in plate design & manufacture
• Material selections supported by extensive resin development and testing
• 100% virgin materials (no regrind)
• Wide range of resin selections for specific process applications
• Continuous design and process development for quality and performance

Accessories

EnviroTech Molded Products provides a wide variety of accessories to meet filtration needs:

• Feed & discharge piping
• Staybosses
• Valves & spigots
• Gasket
• Filter cloth