United Industries TOWER-FLO TFW Series User manual

TOWER-FLO®Division
United Industries, Inc.
P. O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com 1
for
Series
TFW
Water Filter Systems
Complete information for
Engineering, Installation, Operation & Maintenance
of Tower-Flo®Series TFW Water Filter Systems
TECHNICAL MANUAL

Index
2
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-INDEX:2/17
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume to liability for its use.
Series
TFW
Form ID Current Description Page
TFW-INDEX.......................2/17 ............. Index...............................................................................................................................2
WARR................................ 1/10 ............. Warranty .........................................................................................................................3
REG................................... 1/10 ............. Warranty Registration .....................................................................................................4
TFW-DESC........................2/17 ............. System Description.........................................................................................................5
TFW-PSPC........................ 2/17 ............. Project Specifications ..................................................................................................6-7
TFW-COMP.......................1/10 ............. Components ...................................................................................................................8
TFW-DIM ...........................2/10 ............. Dimensions .....................................................................................................................9
TFW-FLOW .......................1/10 ............. Flow Diagrams..............................................................................................................10
TFW-CURVE .....................1/10 ............. Pump Curves................................................................................................................ 11
TFW-ELEC-3PH ................2/17 ............. Electrical Schematic, Three Phase...............................................................................12
CONDINT ..........................2/17 ............. Conductivity Interface ...................................................................................................13
TFW-PTS-VSL...................4/14 ............. Parts, TFW Filter Vessels........................................................................................14-15
TFX-PTS-SPM...................1/10 ............. Parts, Strainer, Pump & Motor Assembly .....................................................................16
TFW-PTS-ACT ..................1/10 ............. Parts, 24 VAC CPVC Valve, Actuator only ...................................................................17
TFW-PTS-VLV................... 1/10 ............. Parts, 24 VAC CPVC Valve, Valve Body only ..............................................................18
TFW-FP20 .........................2/10 ............. Facepiping Assembly, TFW-20.....................................................................................19
TFW-FP24/30 ....................1/10 ............. Facepiping Assembly, TFW-24 & TFW-30 ...................................................................20
TFW-SPARE...................... 1/10 ............. Recommended Spare Parts List...................................................................................21
TFW-BW-OPS ...................1/10 ............. Backwash Options........................................................................................................22
TFW-FWBW ......................1/10 ............. Fresh Water Backwash From Municipal Supply...........................................................23
INISS .................................4/98 ............. Installation Issues .........................................................................................................24
SWEEP..............................4/98 ............. Basin Sweeper Piping ..................................................................................................25
TFW-INSTAL1/4 ................4/10 ............. Installation Instructions, Page 1 ...................................................................................26
TFW-INSTAL2/4 ................1/10 ............. Installation Instructions, Page 2 ...................................................................................27
TFW-INSTAL3/4 ................4/14 ............. Installation Instructions, Page 3 ...................................................................................28
TFW-INSTAL4/4 ................4/10 ............. Installation Instructions, Page 4 ...................................................................................29
TFW-START ......................4/14 ............. Start Up Instructions .....................................................................................................30
BLANK...........................................................................................................................................................................................31
TFW-OPER1/2 ..................3/13 ............. Operating Instructions, Page 1.....................................................................................32
TFW-OPER2/2 ..................1/10 ............. Operating Instructions, Page 2.....................................................................................33
TFW-MNTN1 .....................1/10 ............. Maintenance Instructions..............................................................................................34
MEDINSP .......................... 3/11 ............. Media Inspection Instructions.......................................................................................35
TFW-WINT ........................1/10 ............. Winterization Instructions .............................................................................................36
TFW-TS .............................1/10 ............. Trouble Shooting Guide................................................................................................37

Warrant only to _____________________________________________________________,
the original retail purchaser, that the products which are manufactured by United Industries, Inc. are free from defects in material
and/or workmanship for a period of twelve months from the date of documented installation or, in absence of documented instal-
lation date, 12 months from the date of factory shipment. The warranty registration card in this manual MUST be completed and
returned to United Industries, Inc. in order to establish the date of installation and extend the warranty period. If, within the period
provided by this warranty, any such product shall prove defective, it shall be either repaired or replaced.
For repair/replacement, the original retail purchaser shall first contact the installing dealer, as soon as possible after discovery of
the defect, but in all events prior to the expiration date of the warranty. Upon notification by the dealer, United Industries, Inc., 202
East Cleveland, Sterling, Kansas 67579 will advise the purchaser of the address to which the defective item may be shipped. The
serial number and the date of purchase of the item must be included. Regular UPS cost for shipping replacement part(s) to the
customer will be borne by United Industries, Inc.; shipping other than regular service will be at the customer’s expense. Customer
is responsible for cost of shipping defective part(s) back to United Industries.
If an installing dealer was not involved, then the customer should contact United Industries, Inc.
EXCLUSIONS
1. This warranty shall not apply to any failures resulting from: negligence, abuse, misuse, misapplication, improper installation,
alteration or modification, chemical corrosion, or improper maintenance.
2. Any items manufactured by other companies and used by United Industries in its products may carry warranties by the original
manufacturers.
3. United Industries is not liable for incidental or consequential damages, loss of time, inconvenience, incidental expenses, labor
or material charges in connection with removal or replacement of the equipment.
United Industries is not responsible for any implied warranties or representations by others, and the foregoing warranty is exclu-
sive and in lieu of all warranties provided herein. Some states do not allow the exclusion or limitation of incidental or consequen-
tial damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may
also have other rights which vary from state to state.
IMPORTANT
Read and fully understand the WARNING labels on the equipment. DO NOT OPERATE this unit if any unsafe conditions exist.
UNITED INDUSTRIES, INC.
TOWER-FLO®LIMITED WARRANTY
WARNING
THIS FILTER SYSTEM OPERATES UNDER PRESSURE. DO NOT OPEN WHILE PUMP IS RUNNING AND/OR
UNTIL ALL PRESSURE IS RELEASED THROUGH AIR RELIEF VALVE. SECURELY TIGHTEN VESSEL AND
STRAINER CLAMP ASSEMBLIES ACCORDING TO MANUFACTURER’S INSTRUCTIONS. RAISE PRESSURE
SLOWLY. DO NOT EXCEED THE MAXIMUM WORKING PRESSURE OF THE VESSEL.
DANGER! EXTREME CARE MUST BE TAKEN DURING PRESSURE TESTS. FAILURE TO FOLLOW THESE
INSTRUCTIONS EXPLICITLY CAN RESULT IN PERSONAL INJURY.
Filter Model Number _________________________________ Filter Serial Number _________________________________
Total Filter Surface Area ______________________________ Filtration Rate: Maximum 20 GPM/ft2of Filter Surface Area
Required clearance for service and maintenance: Vertical height ________________ Horizontal width ________________
Filter Flow Rate GPM: Filtration ______________ Backwash _______________ Maximum Working Pressure ___________
Continuous sidestream filtration for removal of suspended solids is one, very important portion of a total water quality manage-
ment program, which should also include the services of competent water treatment professionals for proper control of water
hardness, pH, and biological contaminants.
3
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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 WARR:1/10

Warranty Registration
4
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form REG:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
Congratulations on your selection of a TOWER-FLO®Water Filter System by United Industries, Inc.!
Your TOWER-FLO Filter is designed and manufactured for years of virtually maintenance-free service. As with any
mechanical equipment, however, components can and do fail. If you ever have a problem, Tower-Flo is committed
to supporting you and helping you get your filter back in operation as soon as possible, whether it remains under
warranty or not.
Your TOWER-FLO Filter is covered by a limited warranty as stated on the previous page. This warranty is for 12
months from the date of documented installation or, in the absence of documented installation date, 12 months from
the date of factory shipment. In order to receive the maximum warranty benefit, you must complete and return
the Warranty Registration Card below within 10 days of installation to register your warranty and ensure
your warranty rights. Failure to complete and return this Warranty Registration Card will result in your warranty
being limited to 12 months from the date of factory shipment.
EXTEND YOUR WARRANTY!
COMPLETE AND RETURN THIS WARRANTY REGISTRATION CARD WITHIN 10 DAYS OF
INSTALLING YOUR FILTER TO EXTEND YOUR WARRANTY PERIOD!
Manufacturer’s Warranty Registration Card
Filter Serial Number: __________________________________________________________________
Purchased by: Company: ______________________________________________________________
Address: ______________________________________________________________
City: ______________________________ State: ____ Zip: _____________
Contact Person: _________________________ Phone: _______________________
Date of Installation: ___________________________________________________________________
Complete the card below. Cut along dotted line. Return to:
Warranty Registration
Tower-Flo Filter Division
United Industries, Inc.
P. O. Box 58
Sterling, KS 67579
For Your Records
Date of Installation ___________________ Date Warranty Registration Card Mailed ______________

5
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-DESC:2/17
System Description
Series
TFW
The information below provides a general description of the main components of Series TFX filter systems. Details
of standard, optional, and additional components are found in the Project Specifications document, on the follow-
ing pages.
MAIN COMPONENT DESCRIPTIONS
A. HIGH RATE SAND FILTER VESSEL
This permanent media, high-rate sand filter is a vertical pressure vessel manufactured of filament wound fiberglass
with PVC internals and polypropylene laterals. It has a special influent baffle in the top of the tank, a bed of filter
sand, and a mechanical underdrain system which collects the filtered water and directs it to the return piping system.
The filter operates under pressure. When closed properly and operated without air in the water system, this filter will
operate safely. The system is equipped with a manual air release valve, an automatic pressure relief valve set at 50
psi, and 0-60 psi influent and effluent pressure gauges mounted in a common panel. Vessel is rated for 50 psi
maximum allowable working pressure and 104 F˚ maximum allowable working temperature.
B. VALVE ASSEMBLY
The valves are 24 volt, electric actuated, CPVC, 3-way diverter valves.
C. CONTROL PANEL
The control panel provides all controls for automatic backwash operation. The standard control panel is UL®and
cUL® Labeled in a NEMA 4X corrosion resistant fiberglass enclosure. Backwash is initiated by: 1) differential pres-
sure switch (external to the enclosure); 2) manual backwash pushbutton on face of control panel; or, 3) 100 hour
“re-setting” timer (∆P switch closure or manual initiation resets timer) for backup initiation. The sequence of the
operation is described under the Operation section of this manual. The controls automatically stop the system’s
pump whenever valves are to be shifted which prevents water hammer, pipe flexing, and the risk of damage to col-
lection laterals in the vessel. Standard control panels include five sets of dry contacts for BMS interface: 1) alarm on
repeat backwash; 2) remote pump on/off with HOA switch.; 3) remote indication of common alarm (motor trip indica-
tion; 4) remote indication of backwash operation; 5) remote initiation of backwash; and 6) conductivity interface.
D. PUMP
The pump has a cast brass impeller, motor bracket, and volute with stainless steel fasteners to resist corrosion. The
drip-proof, cool running, mechanical seal virtually eliminates burnout and provides easy access for replacement. The
pump is self-priming.
E. MOTOR
The totally enclosed motor with its external fan-cooled construction allows for operation in noncombustible, dusty,
dirty atmospheres. It is double shielded with pre-lubricated ball bearings on both ends, has a NEMA 56C frame, a
high tensile steel shaft, enclosed in a heavy gauge rolled steel case and is rated at a service factor of 1.15 at 40˚ C
over ambient. Motors are UL approved and CSA stamped.
F. STRAINER
The pump suction strainer assembly has a cast brass body, brass lid, and a cycolac strainer basket. The lid is held
in place by two brass lockhandles and includes and o-ring for postive seal.
G. MEDIA
Filter media is shipped with the unit for field installation. The filter media is quartzite or silica with a relative size of
.45 to .55 mm. Clean filter media will remove particles 20 microns in size and larger. Accumulated material on the
top of the media bed, called a filter cake, contributes to finer particle removal as the filter becomes “dirtier”. Removal
of over 99% of 10 micron particles and 90% of 5 micron particles can be expected over the course of a filter cycle.

Project Specications
6
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-PSP-1/2:2/17
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
100 GPM MAX FLOW RATE 50 PSI WORKING PRESSURE
TOWER-FLO® Series TFW self-contained filter plants shall consist of the following major components: base, pump, motor,
strainer, facepiping, valve, controls, and filter vessel. The system shall be shipped as a complete factory assembled and tested
unit. Filter media shall be shipped with the unit for field installation.
Project: ________________________________________________________ Date: _____________________
The TOWER-FLO®Series TFW Model being specified for this project is a TFW-____ with a maximum filter rate of _____ GPM.
___ unit(s) are specified and each unit shall be equipped with the following components:
COMPONENT SPECIFICATION
BASE ___ Standard: High density polyethylene.
___ Option: Structural steel, primed and painted.
___ Option: Type 304 stainless steel.
PUMP ___ Standard: Self-priming; close grain cast and machined brass volute, impeller, and pump-to-motor coupling;
close coupled to a TEFC motor; and capable of ____ GPM at ____ feet TDH.
MOTOR ___ Standard: TEFC, heavy gauge rolled steel case, NEMA 56C frame, Class F insulation, double shielded
prelubricated ball bearings; UL®and CSA®listed; ____ HP; and at the following primary VAC,
phase and Hz: ___________________.
___ Option: 575 VAC primary power supply, including control panel conversion.
STRAINER ___ Standard: Basket type, brass body, ABS basket, brass cover with o-ring, held in place by two brass lock-
handles.
FACEPIPING ___ Standard: Schedule 80 PVC; backwash sight glass; influent / effluent pressure gauges, 0-60 psi, liquid-filled.
___ Option: Fresh water backwash from municipal water supply; includes controls modification to stop
pump during backwash; flow control valve for field installation; end-user responsible for addi-
tion of pressure regulator (maximum 30 psi) and/or backflow preventer, if required.
___ Option: Fresh water backwash from static water supply using pump to assist.
VALVE ___ Standard: CPVC, 3-way, diverter valves with separate 24 VAC electric actuators.
___ Option: Brass, 3-way ball valves with single electric actuator and mechanical linkage.
VESSEL ___ Standard: ___" diameter, filament wound fiberglass with PVC internals and polypropylene laterals; fitted
with tank drain, manual air relief valve, 50 psi automatic pressure relief valve; 50 psi maximum
allowable working pressure; and 104 F˚ maximum allowable working temperature. Maximum
flow rate _______ GPM at 20 GPM per square foot filter surface area.
Model Base HP Max TDH Full Load Amp Draw Media Operating
Number Dimensions GPM Ft. Single Phase Three Phase Area Vol Weight
S.F. 115V 208V 230V S.F. 208V 230V 460V SqFt CuFt* in Lbs
TFW-20 36" X 48" 1 44 55 1.15 12.0 6.2 6.0 1.15 3.4 3.2 1.6 2.2 2.0 556
TFW-24 36" X 48" 1.5 65 50 1.0 17.0 8.5 8.5 1.15 4.4 4.2 2.1 3.14 3.0 727
TFW-30 36" X 48" 3 100 45 1.0 - 14.0 13.0 1.15 8.4 7.6 3.8 5.0 4.5 1077
*1 Cubic foot of media = 100 lbs.
✔
✔
✔
✔
✔
✔
✔

7
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-PSP-2/2:2/17
Project Specications
Series
TFW
COMPONENT SPECIFICATION
CONTROLS ___ Standard Three phase or single phase, Automatic backwash control panel, UL®and cUL®Labeled, in
a NEMA 4X fiberglass enclosure including: motor starter with thermal overload and short circuit
protection; fuseless branch and control circuit protection; transformer to convert primary supply to
24 and 120 VAC control power; through-the-door disconnect; programmable relay with program of
operation, 7-year battery backup and external memory card backup; HOA switch for pump motor;
differential pressure switch (external to the enclosure) for primary backwash initiation; manual
backwash initiation pushbutton; backwash counter; and contacts for ∆P repeat closure shut-off and
alarm, common alarm (motor trip indication), remote indication of backwash operation, remote
backwash initiation, and conductivity interface. Program features 30-second time delay in ∆P
switch circuit and 100 hour “re-setting” timer (∆P switch closure or manual initiation resets timer)
for backup backwash initiation.
___ Option: Backwash lockout between/among ____ units; to prevent simultaneous backwash of multiple
filter units; 0-60 minute adjustable lockout time delay program; field connection between/
among control panels by others.
___ Option: Contacts for connection to BMS, additional specifications required from owner.
___ local (lights) and remote (contacts) indication of filter or backwash operating mode.
___ other (be specific) _____________________________________________________.
___ Option: Manual backwash; ___ single-phase; ___ three-phase.
MEDIA ___ Standard: Quartzite or silica in nature, hard, not smooth, uniformity coefficient of 1.7, relative size of .45
to .55 mm, containing no more than 5% flat particles or more than 1% clay, loam dust, or other
foreign material. Media weighs 100 lbs per cubic foot.
COMMON ADDITIONAL EQUIPMENT:
NOZZLES ___ Sweeper-Eductor Nozzle, 1/4" MPT, ABS plastic, quantity of _____.
HOLDERS ___ Clip-On Nozzle Holder, quantity of _____; for ___ 1-1/4"; ___ 1-1/2"; or ___ 2" PVC pipe.
SURGE TANK ___ Polyethylene tank for backwash surge capture and gravity release to closest drain:______ gallon capacity,
____" diameter x ____" high, with a ___" diameter lid in top head and a 2" FPT drain bulkhead fitting.
___ Bulkhead fitting, additional, for inlet from filter ___ 2", ___3", or ___ 4", for field installed by others;
___ Manual ball valve, 2", 2-way, ___ Sch 40 PVC, ___ Sch 80 PVC, ___ brass, for field installation by others
on drain piping from tank for isolation and/or throttling.
LIQUID LEVEL ___ Liquid level control assembly for backwash surge tank to interrupt filter pump if/when surge tank nears
capacity. Includes: Gems Series 16M liquid level controller mounted in separate NEMA 3R enclosure requir-
ing separate 120 V power supply factory mounted on filter’s control panel bracket (unless otherwise speci-
ficed); sensor; 3 trimmable probes (L, H, and Ground); field wiring from sensor to LLC enclosure by others.
Also includes additional contacts for remote pump on/off in filter control panel.
___ Liquid level control column assembly; 2” Sch 80 piping assembly mounted on side of poly tank to
isolate liquid level probes from turbulance in poly tank.
SOLENOID VALVE ___ Solenoid valve for backwash siphon break, _____", bronze, with 24 VAC solenoid.
NOTE: Backwash flow rate, irrespective of water source, must be no less than 75% and no greater than 100% of the vessel's
designed maximum gpm. Backwash duration is factory preset at 3 minutes and is field adjustable.
✔
✔

Components
8
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-COMP:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
BACKWASH
TO WASTE
FILTERED
WATER
RETURN
BASE
MODEL NO.
DESCRIPTION TFW-20 TFW-24 TFW-30
Complete assembly:
Single Phase P297520 P297524 P297530
Three Phase P297521 P297525 P297531
Sub-assemblies:
Vessel assembly P297620 P297624 P297630
Valve assembly M870460X M870460X M870460X
Pump assembly: P171922A P171938A P171983A
Base P295262 P295262 P295262
VALVE ACTUATOR
FILTER VESSEL
PUMPMOTOR STRAINER
INFLUENT & EFFLUENT
PRESSURE GAUGES
CONTROL PANEL

9
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-DIM:2/10
Dimensions
Series
TFW
Suction Connection 2" FPT
Backwash Discharge 2" MPT
Filter Discharge 2" MPT
DIMENSION A B b C D E F G H I
TFW-20 20 48 n/a 36 49.5 1.75 14 7.5 12.75 39.75
TFW-24 24 48 n/a 36 49.5 4.25 14 7.5 14.5 41.75
TFW-30 30 48 3 36 49.5 4.25 14 7.5 15.25 43
All dimensions are in inches.
NOTE: All dimensions are approximate and must be field verified.
B
D
C
FH
I
G
E
A
b

Flow Diagrams
10
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-FLOW:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
From Pump
Discharge
Filtered Water
Return
Filter Vessel
From Pump
Discharge
Filter Vessel
Influent
"inlet”
Effluent
“Outlet”
FILTER MODE
BACKWASH MODE
Backwash to Waste
Influent
"inlet”
Effluent
“Outlet”

11
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-CURVE:1/10
Pump Curve
Series
TFW
PERFORMANCE CURVE
CAPACITY IN GALLONS PER MINUTE
Curve based on 3450 RPM impeller speed. 50 cycle units available.
TFW-30
TFW-24
TFW-20

Electrical Schematic
Three Phase
12
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-ELEC-3PH: 2/17
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
RED
X1
TFW SERIES FILTERS CONTROL TERMINAL WIRING
DIFFERENTIAL PRESSURE SWITCH
UPPER ACTUATOR, TOGGLE SWITCH ON POSITION “ON 1”
WHITE WHITE WHITE
WHITE RED
BLACK
LOWER ACTUATOR, TOGGLE SWITCH ON POSITION “ON 1”
1 5
14 15
X3 X3 X3
16 17 17
NOTES: 1. Trip block will be selected in accordance with Table 1. 2. Main disconnect and branch circuit protection must
be sized in accordance with trip block selected.
3. Primary supply taps to transformer will be connect-
ed per primary voltage stated for order.
NOTE: STANDARD SCHEMATIC SHOWN.
OPTIONS WILL CHANGE THIS SCHEMATIC

13
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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 CONDINT:2/17
Conductivity Interface
Series
TFW
Conservation of the world’s freshwater resources is a growing global concern. Tower-Flo, recognizing the contribution its solids
removal devices for condenser water systems make to waste water streams, announces a new “conductivity interface” feature
included in its control panels. This feature establishes an interface capability with an automatic water treatment controller designed
to permit that controller to:
• prevent the backwash of a filter or the purge of a separator;
• initiate the backwash of a filter or the purge of a separator; and
• receive a signal from the filter or separator controls indicating each time a backwash or purge occurs.
Tower-Flo’s new conductivity interface feature overcomes one of the most commonly raised objections about filters and separators
for condenser water systems - “backwash and purge wastes too much expensively treated water”.
Tower-Flo’s new conductivity interface in a sand filter control panel allows an automatic water chemistry controller to be pro-
grammed with:
• a low conductivity setpoint below which none of the three filter backwash initiation sources (ΔP switch, manual pushbutton,
100 hour backup timer) can cause a backwash; a filter backwash cannot inadvertently drive the conductivity too low.
◦ that low conductivity set point should close a dry contact wired to the available contacts in the filter’s control panel, which
will open when conductivity exceeds that low set point.
• a high conductivity setpoint that will initiate a backwash;
◦ that setpoint should be higher than the setpoint controlling the water treatment blowdown valve;
◦ filters deliver their best particle retention when they are at their dirtiest; consequently, the filter should never be considered
as the primary blowdown device;
•use the signal of a backwash to cause the addition of a pre-set volume to a totalized volume of water going to waste.
With Tower-Flo’s conductivity interface in a centrifugal separator control panel, an automatic water chemistry controller can control
the separator’s purge valve the same way it would control a blow-down valve.
This feature is now standard in control panels for Tower-Flo sand filter Series TFW, TFH & TFB. This feature is an option now
available on Tower-Flo centrifugal separator Series TFSP and the optional automatic purge for Series TFS, and will become stan-
dard in the very near future.

Parts
Filter Vessel
14
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-PTS-VSL-1/2:4/14
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
Item Part # Description Qty
1 P297620 Filter vessel w/internals, 20" 1
P297624 Filter vessel w/internals, 24" 1
P297630 Filter vessel w/internals, 30" 1
2 P297640 Lid 8" clear 1
3 P297641 Locking ring, lid 1
4 P297642 O-ring, lid, 8" 1
5a M871813 Valve, pressure relief, 50 PSI 1
5b P297405 Valve. air release, brass 1
ns P297405T Tubing, 3/8" ID, for air release valve3.5
ns P297651 Air bleed screen 1
7 P297652 Air bleed assembly 1
8 P297655 Diffuser 1
9 P297730 Lateral cap *
10 P297735* Lateral segment, 3-1/2" long *
P297745* Lateral segment, 4-1/2" long *
ns P297731* Fishtail, short *
ns P297732* Fishtail, long *
ns P297733* Hub, 20" 1
ns P297734* Hub, 24" & 30" 1
ns P297653 Drain assembly 1
ns P181036 Gauge, 0-60psi, 2.5", liquid filled 2
ns P181120 Backwash sight tube, 2" 1
*NOTE: See next page for quantity & arrangement details
ns = not shown

15
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-PTS-VSL-2/2:4/14
Parts
Filter Vessel Laterals
Series
TFW
P297733 Manifold (hub) 20" vessel 1
P297745 Lateral segment 4-1/2" long 4
P297735 Lateral segment 3-1/2" long 8
P297732 Lateral segment fishtail, long 4
P297730 Lateral cap 16
TFW-20 After 1/1/2013
P297733 Manifold (hub) 20" vessel 1
P297745 Lateral segment 4-1/2" long 8
P297730 Lateral cap 8
TFW-20 Before 1/1/2013
P297734 Manifold (hub) 24" & 30" vessel 1
P297745 Lateral segment 4-1/2" long 8
P297735 Lateral segment 3-1/2” long 8
P297730 Lateral cap 8
TFW-24 Before 1/1/2013
P297734 Manifold (hub) 24” & 30” vessel 1
P297755 Lateral segment 5-1/2" long 8
P297735 Lateral segment 3-1/2" long 8
P297730 Lateral cap 8
TFW-30 Before 1/1/2013
P297734 Manifold (hub) 24" & 30" vessel 1
P297745 Lateral segment 4-1/2" long 4
P297735 Lateral segment 3-1/2" long 16
P297732 Lateral segment fishtail, long 4
P297730 Lateral cap 16
TFW-24 After 1/1/2013
P297734 Manifold (hub) 24” & 30” vessel 1
P297755 Lateral segment 5-1/2” long 4
P297745 Lateral segment 4-1/2” long 12
P297735 Lateral segment 3-1/2” long 8
P297731 Lateral segment fishtail, short 4
P297730 Lateral cap 16
TFW-30 After 1/1/2013
TFW Lateral Components: As built before 1/1/2013 and after 1/1/2013

Parts
Strainer, Pump & Motor
16
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-PTS-SPM:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
Item Part # Description Qty
1 P263165 Lockhandle, brass 2
2 Z010830 Trap cover, bronze, 5" 1
3 P171977 Trap cover, O-ring 5" 1
4 P171005 Basket, strainer 5" 1
5 P170422 Trap body, bronze, 5" x 2" 1
7 P263171 Plug volute and/or trap 2
8 M808698 Bolt, trap to volute 4
9 P171915 Pump base 1
10 P171917 Lockwasher 2
Note: early TFX filters had FRP strainers, call
Item Part # Description Qty
11 P171920 Hex bolt 5/16-18 x 3/4 2
12 P170415 Gasket, trap to volute 1
14 P170417 Volute 1
16 P171976 Seal 1
17 P171974 Gasket, volute 1
18 P171903 Hex bolt, 3/8-16 x 5/8 4
19 P170420 Bracket 1
20 P171902 Hex bolt, 5/16-18 x 5/8 8
21 P171901 Screws, set 3
22 P171904 Shaft extension 1
22A P171904A Shaft extension 12/09 1
22B P171904B Jam Nut 12/09 1
Uncommon Part Numbers
Item TFW-20 TFW-24 TFW-30
15 P171971 P171972 P171973 Impeller 1
23 P171922A P171938A P171983A Pump assembly, (items 9-22) 1
24 P171548 P171549 P171542 Motor, single phase, TEFC 1
24 P171942 P295056 P171541 Motor, three phase, TEFC 1
Common Part Numbers for TFW-20,-24, and -30

17
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-PTS-ACT:1/10
Parts
Valve Actuator
Series
TFW
Item Part # Description Qty
M870461 Actuator Only, 24 VAC 1
1 M870477 Switch, actuator 2
No other actuator parts sold separately

18
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-PTS-VLV:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW Parts
Valve Body
Series
TFW
Item Part # Description Qty
M870462 Valve Only, 3-way, CPVC, 2" 1
socket dimensions machined to pre-2/06
M870462X Valve Only, 3-way, CPVC, 2" 1
socket dimensions since 2/06
1 M870486 Handle knob 1
2 M870487 Handle 1
3 M870484 Cover 1
4 M870465 O-Ring, cover, 3" X 0.1 1
5 M870467 Spacer, split ring 1
6 M870466 O-Ring, shaft, 3/4" X 0.103 2
7 M870473 Diverter Assembly 1

19
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 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-FP20:2/10
Series
TFW Parts
Face Piping - TFW-20
Item Part Number Qty Description
1 M855828 .5 Nipple, PVC Sch 80, 1.5" x 6”
2 M826795 1 Coupling, reducer, PVC Sch 80, 2" x 1.5"
3 M860400 5’ Pipe, PVC Sch 80, 2"
3A M860380 .5' Pipe, PVC Sch 80, 1-1/2"
4 M833106 3 Elbow, PVC Sch 80, 2", SxS, 90˚
5 M870280R 5 Union, PVC Sch 80, 2" SxS
6 M868500 1 Tee, PVC, Sch 80, 2" SxSxS
7 M870460 2 Valve, 3-way, CPVC, 2", socket, with 24VAC actuator
M870461 - Actuator Only
M870462 - Valve Only (port depth dimension on units from11/97 to 2/06)
M870462X - Valve Only (new port depth dimension on units since 2/06)
8 M855795 1 Nipple, PVC Sch 80, 2”
9 P297610 2 Port Assembly, 1-1/2
10 M821216 2 Bushing, reducer, PVC, Sch 80, 2" x 1-1/2", slip
11 M827115 1 Coupling, PVC, Sch 80, 2", slip
Vessel Inflet
Connection
Vessel Outlet
Connection
Pump Discharge
Connection

Parts
Face Piping - TFW-24 & -30
20
United Industries, Inc.
P.O. Box 58
Sterling, KS 67579
800-835-3272 • 620-278-3160
Fax [phone] • 620-278-3115
www.towerflo.com
Form TFW-FP24/30:1/10
Data presented here is the best available at the
time of publicaton. United Industries and/or its
representatives assume no liability for its use.
Series
TFW
Item Part Number Qty Description
1 M855828 .5 Nipple, PVC Sch 80, 1.5" x 6”
2 M826795 1 Coupling, reducer, PVC Sch 80, 2" x 1.5"
3 M860400 5’ Pipe, PVC Sch 80, 2"
4 M833106 3 Elbow, PVC Sch 80, 2", SxS, 90˚
5 M870280R 5 Union, PVC Sch 80, 2" SxS
6 M868500 1 Tee, PVC, Sch 80, 2" SxSxS
7 M870460 2 Valve, 3-way, CPVC, 2", socket, with 24VAC actuator
M870461 - Actuator Only
M870462 - Valve Only (port depth dimension on units from11/97 to 2/06)
M870462X - Valve Only (new port depth dimension on units since 2/06)
8 M855795 1 Nipple, PVC Sch 80, 2”
9 P297615 2 Port Assembly, 2"
Vessel Inflet
Connection
Vessel Outlet
Connection
Pump Discharge
Connection