23
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax 800-500-3115 • 620-278-3115
www.towerflo.com
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Form TFW-FWBW:1/10
Option -
Fresh Water Backwash
from Municipal Water
Series
TFW
INSTALLATION
FRESH WATER BACKWASH FROM
MUNICIPAL SUPPLY
This option changes the facepiping
from the standard configuration (as
shown in drawings elsewhere) to the
configuration shown here. Included with
this option is a flow control valve for
field installation.
The end-user is
responsible for the addition of a
pressure-controlling device in the
municipal water supply line set to a
maximum 30 psi.
Local code may
also require the addition of a back
flow preventer in the municipal water
supply line.
Municipal water supply is connected to
the bottom port of the top valve. The
additional equipment required to control
the pressure and flow of municipal
water supply to the filter system should
be installed in the following sequence
from source toward the valve connec-
tion on the filter: 1) back flow preventer
(by others); 2) pressure controlling
device set to maximum 30 psi (by oth-
ers); 3) flow control valve 2” (provided
by TF) set at either:
• 36% for TFW-20 at 35 gpm,
• 28% for TFW-24 at 65 gpm,
• 20% for TFW-30 at 100 gpm.
FWBW-BACKWASH MODE
Backwash to Waste
From City
Water
Filter Vessel
Influent
Effluent
From Pump
Discharge
Filtered Water Return
Filter Vessel
Influent
Effluent
FWBW-FILTER MODE