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Control Valve Function and Cycles of Operation
The glass fi lled Noryl fully automatic control valve is designed as
the primary control center to direct and regulate all cycles of a wa-
ter softener. The control valve can be set to regenerate on demand
(consumption of a predetermined amount of water) and/or as a
time clock (passage of a particular number of days).
The control valve is compatible with a variety of regenerants and
resin cleaners. The control valve is capable of routing the fl ow, of
water in the necessary paths to regenerate or backwash water
treatment systems. The injector regulates the fl ow of brine or
other regenerants. The control valve regulates the fl ow rates for
backwashing rinsing and the replenishing of treated water into a
regenerant tank.
The control valve is designed to deliver high service (27 gpm @
15 psig) and backwash (27 gpm @ 25 psig) fl ow rates when the
bypass has straight fi ttings. The control valve uses no traditional
fasteners (e.g. screws), instead clips, threaded caps and nuts and
snap type latches are used. Caps and nuts only need to be fi rmly
hand tightened because radial seals are used. Tools required to
service the valve include one small blade screwdriver, one large
blade screwdriver and pliers. A plastic wrench is available which
eliminates the need for screwdrivers and pliers. Disassembly for
servicing takes much less time than comparable products currently
on the market.
The transformer power pack comes with a 15-foot power cord
and is designed for use with the control valve. The transformer
power pack is for dry location use only. The control valve re-
members all settings for two hours if the power goes out. After
two hours the only item that needs to be reset is the time of
day, all other values are permanently stored in the nonvolatile
memory. The control valve does not need batteries.
When the control valve is used as a down fl ow softener, two
backwashes always occur. The softener will start regenerant
prefi ll before regeneration, the prefi ll starts two hours before
the regeneration time set. During the 2-hour period in which
the brine is being made, treated (softened) water is still avail-
able. For example:regeneration time = 2:00 am, prefi ll option
selected, downfl ow softener. Fill occurs at 12:00 a.m., start of
backwash cycle occurs at 2:00 a.m.
REGENERATION STEPS AND PURPOSE:
Brine fi ll
– Brine tank is fi lled to dissolve salt for next
regeneration.
Backwash
– Flow through the resin bed is reversed. Wa-
ter fl ows upward expanding and agitating the resin bed.
Brine in
– Brine is educted from the brine tank and
passes through the resin bed in a downward fl ow, thus
removing calcium and magnesium that has accumulated
on the resin beads and is fl ush to drain.
Backwash
– A second backwash is performed
Rinse
– The resin is now fl ushed downward at a set fl ow
rate. This resettles the bed and rinses out any remaining
brine left in the resin bed.
EXCHANGE CAPACITY DATA
20,000 grain approx. per cu. Ft.
6 lbs. salt-sodium chloride
25,000 grain approx. per cu. Ft.
8 lbs. salt-sodium chloride
30,000 grain approx. per cu. Ft. 1
5 lbs. salt-sodium chloride
Note: To convert parts per million (PPM) to grains divide by
17.1
Example: Water hardness of 250 PPM
(250 PPM divided by 17.1 PPM/gr.) equals 14.6 gr.
It is recommended that a good grade of solar or pellet salt be
used.
One-gallon water will dissolve approximately 3.0 lbs. of salt
