FRF, FMF & FHF SERIES
WATER FILTERS

FRF SERIES
Features
  • Fiberglass Mineral Tanks
  • Top Mount 1 1/2 Inch Taskmaster II™ Valve
  • Filtration Media
FMF SERIES
Features
  • Galvanized or Lined and Primed Mineral Tanks
  • Side Mount 1 1/2 Inch Taskmaster II™ Valve
  • Filtration Media
FHF SERIES
Features
  • Galvanized or Lined and Primed Mineral Tanks
  • Side Mount 2 or 2 1/2 Inch Taskmaster II™ Valve
  • Filtration Media

The media choices for this series of filters are:

  • Fine Sand
  • Filter AG
  • Activated Carbon
  • Multimedia
  • Manganese Greensand
  • Stabilization Media
 

Filtration Cycles

  • Service.  Filters remove solids from water.  The water flows downward through the media and is clarified.  The solids accumulate in the media bed.
  • Backwash.  When the filter begins to clog or when the head loss though the bed increases, flow rates are dramatically reduced and often solids “break through“ the filter and water quality deteriorates.  To clean the filter bed, the flow is reversed, fluidizing the media bed, and is directed to drain.  The flow required is specific to the media.   If too much flow is applied, the bed can be flushed from the tank and if too little flow is applied, the bed will not fluidize properly and will not be cleaned.  Improper cleaning leads to mud ball formation and channeling in the filter. The FRF, FMF, and FHF Series all use nozzle type backwash rate-of-flow controllers. Backwash is made possible by shifting the Task Masterä or Task Master IIä multiport valve so that it allows the water to enter the bottom of the filter tank and flow upward through the media bed, thus backwashing filtered solids to drain.
  • Filter to Waste.  When a filter is returned to service after backwash, the initial effluent solids concentration from the filter is high.  The bed must be repacked and begin to remove some particulates before it can become effective.  Thus, the first few gallons of a filter run are usually wasted.   This part of the cycle is called filter to waste. 
Task Master™ valve
   
1. The precision “Memory System” by Water King controls time clock or semi-automatic operation.  Water meter regeneration by totalized flow is also available.  The valve design keeps timer and valve synchronized. Patent No. 3732738.
2. Motor Driven Operation is not dependent on water pressure, and shifts smoothly without water hammer.  The drive assembly accurately and consistently positions the plunger for each cycle.
3. Raw Water By-pass up to 70 gpm on the FRF & FMF series, and 150 gpm on the FHF series is available during all regeneration cycles.
4. Threaded Taps at the inlet and outlet ports provide easy installation of test taps and pressure gauges.
5. Every Valve Is Tested Twice.  Valves are hydrostatically pressure tested after initial assembly and then tested again as part of the completed filter.
6. All Brass Construction in the valve body provides corrosion resistance. The valve has only one moving part – the plunger.
7. NEMA 3 Enclosures provide rainproof protection of electrical components.
8. All Plumbing is made up to the tank adapter (FHF only).
9. Injector System controls the induction of potassium permanganate in FRF greensand filter models 45 through 150. On other filters that do not feed chemicals, the injector port is plugged. Larger greensand filters use chemical injection pumps.
10. Electrical System is designed to provide on/off signal for external electrical functions.
11. Service & Regeneration lights indicate valve positions.
 
Tanks
All tanks used on the FRF Series Filters are 100% non-metallic construction, seamless, molded vessels with no welds or joints.  The inner shell is constructed of polyethylene and the outside is wound with continuous fiberglass, roving to provide superior strength under pressures up to150 psi. All tanks, vessels, and the materials used in their construction have been accepted or certified by the Water Quality Association and ANSI/NSF Standard 44.  The Task Master II TM valve is “top mounted” on a 4” - 8UN diameter threaded opening. The polyester resin is rated to 120oF.

The standard tanks on the MF and HF Series are 100 psi, non-code carbon steel pressure vessels.  Tanks can be either galvanized or epoxy lined and externally primed in sizes less than 48 inches.  Larger tanks are only available with epoxy liners and external primer.  Tanks meet ASNI/NSF Standard 61.  All linings are approved by AWWA for potable water. Tanks have two 4”x6” openings in sizes less than 36 inches.  Larger tanks have one     4”x6” opening and one 11” x 15” manway. ASME Code tanks are available in all sizes for steel tanks.
 
Internals

The internals assure proper distribution of fluid in the tanks during all cycles.  The RF Series features a single point bottom distributor connected by 1¼ inch PVC pipe directly to the top mount valve. The RF Series does not have an upper distributor since the water flows directly from the top mount valve into the tank.

The MF and HF Series use a multiple-point distributor system.  Smaller systems have two lower distributors while larger systems have six or more.  The plastic lower distributors have a 0.011 to 0.013 thousandths of an inch slot size to block resin loss. Internal piping is schedule 80 PVC with ABS distributor heads.   Open PVC pipe upper distributors are included in all MF and HF tanks.

Water King

102 Charbonnet Road

Duson, Louisiana 70529

Phone 337 988 2360

Fax 337 981 7922

wknginfo@waterking.com