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Sub Title: FRP Industrial Water Softeners

Pure Aqua offers water softeners and water softener systems that can provide clean water for your industrial applications. We have several satisfied clients all around the world that use our water softener solutions.

SKU: SF-110F Category: Ion Exchange Systems > Water Softeners Brand: Pure Aqua Other Names: Industrial Water Softener System, Triplex Resin Ion Exchange Machine, Fleck Control Valve Water Softening Unit, Municipal Fiberglass Duplex Softener


Uses for Industrial Water Softeners SF-110F Series

Pure Aqua's water softeners treat the water by removing hardness using resin. The resin replaces the hardness in the water with salt which is regenerated periodically. The softened water can then pass through an RO system to remove the salt without the risk of scaling. Softeners can be used in a variety of services including: industrial, municipal, and institutional applications.

  • The SF-110F series softeners are designed as fully automatic units either with timer or meter control. The timer controller intiates automatic regeneration features a choice of 7 or 12 day calendar wheels. Time of regeneration and length of time for each regeneration cycle are fully adjustable.
  • The metered models start regeneration based on the total gallons used.
  • The FRP mineral tank is engineered for a 150 psi working pressure and is tested to 160 psi.
  • A premium grade sulfanated nonphenolic polystyrene type resin is contained in the mineral tank. The resin will deliver 30,000 grains per cubic foot when brined at a rate of 15 lbs. per cubic foot.
  • The brine tank is a combination of high density polyethylene tank and a brine valve, including an air eliminator valve and a safety brine refill shut off to prevent tank overflow.
  • The under drain utilizes either a hub & lateral or a header & lateral system to evenly distribute water and prevent resin loss, and to insure minimal pressure drop at peak flow rates.


System Specifications
  • Valve connections: female socket weld, or optional flanged connection
  • Slower flow rate per cu.ft. = better filtration
  • Maximum temperature: 140°F (60°C)
  • Operating pressure: 150 psi (10 bar) for the tank and 100 psi for the overall system
  • Recommended service flow rates/ranges are based on the cu.ft. of the tank/filter bed
  • 2 GPM/cu.ft. = minimum “superior softening" (< 0.15 grain (3 ppm) of hardness leakage), < 2 psi drop
  • 3.5-5 GPM/cu.ft. = average grade softening (up to 1 grain (17 ppm) of hardness leakage), < 5 psi drop
  • Hardness leakage of < 3 ppm (0.2 grains) @ 6 lb. NaCl, and < 1 ppm (0.1 grains) @ 12 lb. NaCl.
  • 5-10 GPM/cu.ft. = utility softening
  • Backwash rates allow 50% bed expansion at 60°F.
  • Peak flow rates are based on 10 GPM/cu.ft. or > 12 psi loss, whichever occurs first
  • Capacity based on 23 grains (400 ppm) of hardness as CaCO3 at 2 to 4 GPM/cu.ft. (2 to 1 CaCO3 to Mg ratio)

Model Number Exchange Capacity @ 15lb/cu.ft. Grain Flow Rate (GPM) Valve and Pipe Size Resin Qty. (ft) Tank Size Salt Storage (lbs.)
Service BW
Cont. Peak Softener Brine
WSF14-90-1 90,000 15 25 7 1" 3 14x65 24x50 900
WSF16-120-1 120,000 16 27 8 1" 4 16x65 24x50 900
WSF18-150-1.5 150,000 25 40 9 1.5" 5 18x65 24x50 900
WSF21-210-1.5 210,000 30 50 12 1.5" 7 21x65 24x50 900
WSF24-270-1.5 270,000 40 60 16 1.5" 9 24x72 24x50 900
WSF24-270-2 270,000 65 120 16 2" 9 24x72 24x50 900
WSF30-420-1.5 420,000 40 70 25 1.5" 14 30x72 30x60 1,600
WSF30-420-2 420,000 65 120 25 2" 14 30x72 30x60 1,600
WSF36-600-2 600,000 65 120 35 2" 20 36x72 39x60 2,700
WSF36-600-3 600,000 120 270 35 3" 20 36x72 39x60 2,700
WSF42-750-2 750,000 65 120 48 2" 25 42x72 39x60 2,700
WSF42-750-3 750,000 120 270 48 3" 25 42x72 39x60 2,700
WSF48-1050-2 1,050,000 65 120 63 2" 35 48x72 50x60 4,500
WSF48-1050-3 1,050,000 120 270 63 3" 35 48x72 50x60 4,500
WSF63-1120-3 1,120,000 120 270 98 3" 40 63x67 50x60 4,500
WSF63-1800-3 1,800,000 120 300 119 3" 60 63x86 50x60 4,500


Standard Options
Available Options
  • 1”-3” Noryl diaphragm valves or butterfly valves for 4’’ or larger
  • Digital stager for filters using diaphragm valves or PLC for butterfly valves
  • These softeners are designed as fully automatic units either with timer or optional meter control.
  • The timer controller initiates automatic regeneration and features a 7 or 12 day calendar wheel.
  • Time of regeneration and length of time for each regeneration cycle are fully adjustable. The models with (optional) meter start regeneration based on the total gallons used.
  • The FRP mineral tank is engineered for a 150 psi working pressure and is tested to 160 psi.
  • A premium grade sulfanated nonphenolic polystyrene type resin is contained in the mineral tank.
  • The resin will deliver 30,000 grains per cubic foot when brined at a rate of 15 lbs. per cubic ft.
  • The brine tank is a combination of high density polyethylene tank and a brine valve, including an air eliminator valve and a safety brine refill shut-off to prevent tank overflow.
  • The under drain utilizes either a hub and lateral or a header and lateral system to evenly distribute water and prevent resin loss, and to insure minimal pressure drop at peak flow.
  • Duplex, triplex or multi units
  • Skid mounted, plumbed & wired
  • PLC control system
  • Steel resin tanks
  • ASME coded tanks
  • Butterfly control valves
  • Alternate water meter types
  • Unistrut channel supports
  • Inline hardness monitor


The ideal applications for the SF-110F series include:
  • Apartments/Condominiums
  • Cooling Tower
  • Hospitals
  • Groundwater remediation
  • Boiler Feedwater
  • Contact process water
  • Car Washes
  • RO Pre-treatment
  • Laundries


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