Time Clock ( 12 Day ) Backwash ONLY Filter Valve,
Set Days Control. 120 volt 60 Hz Backwash only
with 12 Day skipper wheel. Commonly used on tanks for backwashing Carbon, Birm, and Acid Neutralizing Medium such as Calcite.
"Carbon Filter" assumes the media tank is using only Carbon with Gravel under bedding. And requires the installation of a Top Distributor which we provide with each Valve ( MD1203 ).
"Filter Backwash" assumes the media tank is using something "Heavier" than Carbon, such as BIRM, Calcite, Green Sand, Pyrolox, and Gravel under bedding.
And that is the reason for the higher Backwash Flow Rating per Tank Diameter.
If this Valve is to replace an existing Fleck 5000, 5600, 2510 or newer Rainsoft ( with Black Noryl body ) valve, then the existing By Pass or Piping Yoke will clip on to this replacement valve.
Otherwise you will NEED either a standard Noryl plastic piping connection in either 3/4" or 1" with all valves purchased,
OR a By-Pass Option can be purchased separately.
NOTE: Valve Covers ( front and rear ) are INCLUDED at no extra charge.
We include at no extra charge, a new distributor kit. This is part # MD1236. It is a plastic lower screen which can be cemented to a piece of 3/4" PVC pipe to construct a new distributor tube. Your old distributor could be slightly smaller than the ones now used by both Fleck and Autotrol ( old size 13/16", new size 1.05" outer diameter ).
We also include a 1.05 Top Distributor Twist On - part # MD1203 at no charge.
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Tank Diameter - How To Measure and Why Manufacturer Specification Sheet for Hankscraft HS Series model ValveDownload Service Manual for HS Series