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 TFH-INSTALL2/4:11/07
Installation
Series
TFH
Backwash Sight Glass
*TOWER-FLO
recommends the installation
of unions and/or valves in these three plumb-
ing connections for ease of isolation or
removal, should it become necessary for any
reason.
NOTE: All plumbing connections should fol
-
low accepted plumbing procedures. Pipe
joints should be sealed using teflon tapes
without adhesive backings or with com-
pounds suitable for use with PVC and ABS
plastics.
FILTER
FLOW
SIDE VIEW OF BACKWASH LINE
ALTERNATE METHOD OF
INSTALLING SIGHT GLASS
END VIEW
SIGHT GLASS TAPPED
DIRECTLY INTO PIPE
BACKWASH LINE VALVE
AND FILTER LOCATED
UPSTREAM OF BACKWASH
SIGHT GLASS
1/2 OF 1-1/2" COUPLING WELDED TO PIPE
SIGHT GLASS SCREWED INTO COUPLING HALF
SIGHT GLASS SHOULD BE
LOCATED ON SIDE OF BACKWASH
PIPE. DEFLECTOR VANE MUST BE
PLACED PERPENDICULAR TO THE
FLOW OF WATER AND MUST BE IN
THE WATER.
DEFLECTOR VANE
STEP 3. PLUMBING
A) Fabricate and install sweeper piping system in water source with holes sized according to the Sweeper Pipe
Sizing tables and formula found on page 10 of this manual; or if using
TOWER-FLO
®
Sweeper-Eductor Nozzles,
follow directions supplied with the nozzles. The sweeper piping system should be designed so that water return-
ing from the filter sweeps particulate matter toward the suction line to the filter which is usually installed at or near
the lowest point in the source water basin.
B) Install the automatic air release valve on the nipple on the top of the vessel.
C) Connect piping from water source to strainer inlet*.
D) Install return piping from filter’s effluent (filtered water) valve outlet to water source*.
E) Install waste piping from backwash outlet valve to drain. The backwash sight glass shipped with the unit should
be installed in the waste line (as shown below) in a position which allows convenient observation of backwash
flow. Make certain the disposal point will handle the unit's stated backwash flow.
G) To permit drainage of filter system for winterization, add drain valve at lowest point in side stream piping.
