Where Used:           Back to Top

• Permanent replacement for disposable media available sizes for smaller tanks, in hundreds of gallons sizes.
• Dirt on particulate in plating baths can cause poor quality, in terms of performance or appearance, leading to reject parts.  Plating solutions benefiting from Perma-Disc® include zinc, chrome, nickel, tin, copper, silver and combined elements.
• Effluent streams after waste water treatment systems can still contain particles containing hazardous materials, often referred  to as carryover, which exceed discharge limits.  PermaDisc® can remove this particulate without consumable media and its disposal as a hazardous waste.
• Perma-Disc® filtration of aqueous grinding coolants improves productivity, dimensional accuracy, and surface finish.

Operating Principles:            Back to Top
 

The same principles used in the original, larger Perma-Disc® filters for over ten years, have been scaled down from tanks holding thousands of gallons to tanks containing hundreds of gallons.  Instead of paper or cartridges, fluids are filtered through a horizontal stack of uniquely molded plastic discs.  Two types of disc surfaces are stacked in alternating order:  one disc surface is flat with ultra fine grooves on both sides.  The contacting disc surface has raised "lands" on both sides, also with ultra fine grooves.

When the discs are placed together, their grooves intersect across the surface of the lands to create a filtering labyrinth.  Fluid is able to enter the thousands of micro-channels within this labyrinth while suspended particles cannot, gradually building up in the area outside the lands.

Starting with a clean disc stack, the pump fills the filter chamber with contaminant-laden fluid.  Once operation begins, particles larger than 10 microns begin to collect outside the lands, forming an initial layer of contaminants.

Subsequent particles impinge on this layer during operation, finally trapping particles as small as 1 micron.  When such extremely fine filtration is required from the outset, the disc stack can be precoated with a layer of filter aid such as diatomaceous earth mixed in the slurry tank.

When a predetermined back pressure is reached, the filter is filled and ready for cleaning.  Release the cap and lift out the entire disc stack.  Place the stack into the cleaning station where air agitation separates and rotates the discs while the air bubbles scour off the dirt.  In just a few minutes, the stack is ready for service again.

Features and Benefits:            Back to Top
  
 

FEATURES	BENEFITS
No filter media to buy.	Lower operating cost.
No costly disposal of used paper or cartridges	Greatly reduces hazardous waste disposal costs.
Discs can be precoated, and retain precoat even after shutdown.	Saves time and provides filtering performance down to one micron.
Discs have large sludge holding capacity, three times that of a cartridge.	Reduced labor costs as a result of less frequent cleaning.
Discs have large filter area, allowing high flow rate in a small package.	Saves floor space.
Discs are stacked in an extendable support.	Fast, easy cleaning for lower labor costs.
No Tools or bolts needed, screw on housing.	Saves time, labor costs.
Viton o-rings, in precision grooves.	Lower maintenance due to improved seals.
Rugged construction, proven components.	Long life.
Compact design is portable through narrow aisles or can be installed in tight areas.	Easily placed wherever it is needed.

Product Offering:            Back to Top

FLOW RATES:           6 and 15 gpm.

CONFIGURATIONS:      *    Externally positioned systems with precoat capability.
                                        *    Systems located on tank rim, over the tank.
                                        *    Filter element and housing only.
 

	Model 360 S filter system, complete  with horizontal pump, Perma-Disc® stack and housing.    Slurry tank for  precoating, with piping.  Motor starter  on rear (not visible).  Note large plastic  wheels for easy mobility.  Can be used  for carbon treatment.
Model 360 AT with vertical pump                    and Perma-Disc® filter assembly.                   Pressure gage faces aisle.  Rugged,                    adjustable clamps on both sides.                   Discharge from filter can be piped to                   suit.  The AT Series is designed for                   applications such as precious metals                   or other solutions where filtering within                   the confines of the plating tank is                   preferred.  Any dripping or spillage                   falls back into the tank, prevents loss                   of solution or difficult cleanups.
	Model 360 S+C, top opening  housing and Perma-Disc® stack  assembly.  S + C Series, the "Stack  and Chamber" are the heart of the  Perma-Disc® technology. Recognizing  that many existing installations can  benefit from Perma-Disc®, the S + C  series can be retrofit in place of existing filtration setups.

                                                                                                                      Back to Top

                           Back to Top