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The STAK-Series Self-Cleaning Screen Filter


This unique, "stacked" screen filter design, delivers HIGH VOLUME & AUTOMATIC FILTRATION in a compact package. Everfilt® specializes in designing systems to fit the simplest or most complicated environments. We are always willing to provide step-by-step customer care on our products and ensure that your system is functioning to spec.

Some of its highlights include:

  • Self-Cleaning

  • Fast Backwash ( 15 Sec/Filter )

  • Low Pressure Requirement ( 25 PSI )

  • Low Maintenance

  • Up to 1,400 GPM Per Unit @ 200 Mesh

  • Organic & Inorganic Solids Removal

  • Small Footprint

  • Factory Assembled & Skid-Mounted

Everfilt® had incorporated high-strength profile wedge wire screen, stainless steel, solid-state electronics and proven valve technology into an automated filter system that is easy to operate and maintain.

Industry Applications

  • Municipal Wastewater Treatment

  • Industrial Wastewater

  • Commercial Irrigation

  • Agricultural Irrigation

Standard Specifications

Filter screen cartridges shall be a single piece unit of all-welded 304 stainless wedge wire construction with 125 PSI collapse strength and 400 PSI burst strength. Filter housings shall be constructed of all-welded and ribbed 304 stainless steel and rated 125 PSI operating pressure. Each filter housing is to be equipped with an individual 3 port, two-way backwash valve, which is constructed of ductile iron and is hydraulically operated. Wetted surfaces of the backwash valve shall be coated with 3M-134 industrial grade epoxy.

Backwashing is to be accomplished by full reverse flow of water through the screen cartridge. Normal backwash cycle time shall be 15 seconds per filter. A minimum 25 PSI is required for inlet and discharge lines. Filters are to be manifolded together with carbon steel manifolds, whose interior surfaces have been sand blasted and epoxy coated. Manifolds shall have grooved connections for victaulic style couplings.

Automatic backwash shall be initiated by pressure differential or timed interval through a solid-state controller with status lights and LCD backwash record display. Controls shall be housed in a weather resistant enclosure. The controller shall operate from 120 VAC or 12 VDC power source. The complete STAK-Series system shall be factory assembled, tested and skid-mounted with an appropriate lifting eye.

It shall include filter units, inlet, outlet and backwash manifolds, continuous acting air/vacuum relief valve, pressure gauges, automated backwash valves with associated hardware and backwash control. The system shall be wired and ready for hook-up to power and supply lines.

To discuss more information regarding Everfilt® Water Filtration Systems, talk with an Everfilt® Applications Engineer: 1.800.360.8380 /


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