Everfilt - Model SM Series -Carbon Steel Sand Media Filters

Innovators in Water Filtration – All Steel, All Welded Underdrains

All-Steel, All-Welded Underdrain – Everfilt pioneered the design of the radial hub stainless steel underdrain – and many other manufacturers have since followed our lead. We manufacture quality systems for use in water and wastewater treatment.

For more information regarding water or wastewater treatment, or our other innovative filtration services, Contact us!

Everfilt’s underdrain is hydraulically balanced to assure efficient collection of filtered water. The lateral collection screens are matched to the natural flow of water through the filter. It also means that during backwash, the filter bed is lifted uniformly and fully, thus achieving complete cleaning and regeneration of the media.The high strength profile wire screen retains medias finer than No. 20 silica sand, thus eliminating the need for filter back-up screens. The non-clogging characteristic of the screen makes it the most reliable collection system available. Everfilt’s underdrain is all steel construction and fully welded. The added strength results in years of trouble-free, reliable operation.

Heavy-Duty Backwash Valve – Everfilt’s backwash valve body is made of high strength ductile iron and is coated with industrial grade epoxy – a material known for its resistance to corrosion. All wetted surfaces are stainless steel or epoxy coated. The hydraulic design prevents valve slamming and eliminates possible damage to the valve and manifolding. Backwash valves for media filtration can be ordered for manual, semi-automatic, or automatic operation.

Automatic Backwash Control

Everfilt designs and manufactures its own automatic backwash controls. User friendly control knobs, panel labeling and display lights make for easy use. Made of solid state electronic circuits, the automatic controller helps assure effective system operation by initiating needed backwash in an efficient manner. The control can be set to trigger backwash either when a specified pressure differential or time interval is reached. The control is housed in a water resistant enclosure.An optional LCD readout indicates when the next backwash cycle is timed to begin, the total number of backwash cycles that have been initiated since last reset, and the number of backwashes that have been triggered by pressure differential. Users find this information very useful in identifying operating conditions requiring their attention.

Models are available for 4, 8, 12 station controls. Thus, in some cases it’s possible to expand an existing filter installation without the expense of changing controls. Deep Bed Media Filtration – For filtration applications where slow, deep sand filtration is required to achieve low micron filtration, a high jacket tank is available. Consult the factory for specific sizing. Solar Power – For field conditions where electric power is unavailable or unreliable, or where it is just more cost-effective, Everfilt offers a 12-volt DC solar power option. The heavy-duty battery has the capacity to deliver power to the system even in overcast weather.

» See the SM-Series Sand Media Filters

• FLOW RATE (GPM) (1)YY /YY FILTER FLOW RATE (GPM/FT2) (2) = FT2 AREA (3)
• (1) Designed Flow Rate (GPM)
• (2) Filtration Flow Rate (GPM/FT2)
• Average water (domestic water, clean well water, etc.) 20 – 25
• Dirty water (clean reservoir water, lined canal water, etc.) 15 – 20
• Extra dirty (dirty reservoir water, unlined canal water, etc.) 10 – 15
• (3) Total filtration area required (FT2)