Fleck 5600/16AF Automatic Filter with Calcite/Corosex, 10" x 44"

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56-16AFB-10-Corosex

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Product Code: 56-16AFB-10-COROSEX

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Description

Spec Sheet / Manual

Features include Fleck 5600/1600 filter valves with PVC injectors and special feeder pistons, 3/4" stainless steel bypass, black polyglass tanks, basket distributors, Calcite/Corosex, gravel beds and potassium solution tanks.

Product Features:

Simple mechanical design is easy to understand
Two valve body designs; one for down-flow regeneration and one for up-flow (covers every valve in the 5600 family - quick access to all internal components)
Injector/drain modules containing the bring valve, flow controls and injector are removable from the valve's exterior
Ruggedly built timer is designed with heavy-duty 3/8" wide plastic gears
5600 controls are user friendly and easy to program
Non-corrosive, UV-resistant Noryl® valve body
Choice of 7 or 12 day clock or demand regeneration with either mechanical or electronic meter
Economical - small annual power consumption; keeps the time and activates the piston/valve mechanics with a single motor
Designed with double backwash

Corosex®

By neutralizing the free carbon dioxide in water, Corosex can correct acidic water conditions and render it less corrosive. Corosex, being a highly reactive magnesium oxide, is used most effectively where pH correction is substantial or high flow conditions are in use. pH correction and media consumption are affected by a number of water chemical variables. Being soluble to acidity, Corosex will slowly dissolve and will need to be replenished periodically.

On a per weight basis, magnesium oxide can neutralize much more acidity than can calcium carbonate, (five times as much). This results in greatly reduced chemical usage for the same pH correction. Please note, under certain low flow conditions, Corosex may overcorrect and create a highly basic (high pH) condition.

Under certain hardness conditions, pH correction can cause hardness minerals to precipitate out of solution, resulting in cementing or solidification of the Corosex mineral bed. Upflow service is generally recommended with hardness exceeding five grains per gallon. (Always use an in-line filter ahead of an upflow system to prevent plugging of the lower distribution screen.)

As Corosex’s magnesium oxide neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.

Corosex is effectively combined with calcite to combine the high flow neutralization properties of Corosex, along with the slower reacting low flow properties of Calcite, reducing potentially high basic properties due to overcorrection.

Advantages

High degree of activity and speed of correction allowing high flow
High capacity...less chemical usage

Physical Properties
Color: Brownish white
Bulk Density: 75 lbs./cu. ft.
Mesh Size: 6 x 16
Specific Gravity: 3.6 gm/cc
Effective Size: 1.4 mm
Uniform Coefficient: 1.7
Composition: MgO 97% min.

Conditions for Operation

Downflow service is generally satisfactory on waters with a hardness of less than five grains/gal. or where it’s combined with Calcite at least 50-50. Upflow service is generally recommended with hardness exceeding five grains/gal. to prevent “cementing of the Corosex bed”
Use distributors designed for upflow applications
A gravel support bed is recommended
Water pH range: 4.5-6.0
Bed depth: 24-30 in.
Freeboard: 50% of bed depth (min.)
Backwash frequently to prevent possible cementing
Backwash rate: 10-12 gpm/sq. ft.
Service flow rate: 5-6 gpm/sq. ft. but may be modified to adapt to local conditions

Calcite

Acidic waters on contact with Calcite slowly dissolve the calcium carbonate media to raise the pH which reduces the potential leaching of copper, lead and other metals found in typical plumbing systems. Periodic backwashing will prevent packing and maintain high service rates. Depending on pH and service flow, the Calcite bed will have to be periodically added to as the dissolved calcite de pletes.

As the Calcite’s calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.

Advantages:

High uniformity coefficient for maximum contact for controlled pH correction
Slower reacting
Inexpensive

Physical Properties:
Color: Near White
Density: 100 lbs./cu. ft.
Composition: CaCO3, 95% minimum; MgCO3, 3.0% maximum

Conditions for Operation:
pH: 5 - 6
Bed Depth: 24 - 30 in.
Backwash Rate: 8-12 gpm. sq. ft.
Backwash Bed Expansion: 35% of bed depth
Service Flow Rate: 3 -6 gpm/sq. ft. invariably give satisfactory results but may be modified in view of local conditions.