Single Tank Face Piping Installation (Ths 3461) - Pentair THS Series Installation And User Manual

IMPORTANT: Installation of the face piping should occur after the filter vessels have been
positioned in their permanent location. Please refer to the Tank Owner's/Operator's Manual
section on locating the filter vessels. For dual tank systems, it is very important that the "C-
C" dimension listed in Figure 1 on page 5 of that manual is followed. Please refer to the
Tank Owner/Operators Manual for more information.
Diaphragm valve style face piping kits come in either one or two tank kits. All piping is pre-
glued, which means the only connections that need to be made are flanged connections (with the
exception of THS3461 tanks which are 4" grooved connections) between mating sections. Please
refer to the appropriate drawings in the Appendix section at the end of this manual for aid in
assembly.
IMPORTANT: When tightening flange bolts, it is important to follow a diametrically opposed
pattern. This will ensure that a proper seal between the flanges is obtained. Refer to Figure
1 below for proper tightening sequence. Torque all Metallic type bolts to a maximum of 25
ft-lbs / Non Metallic to a maximum of 15 ft-lbs/Non Metallic. Also, it may be beneficial to
apply a lubricant to each bolt or nut to help relieve stress due to friction.
Prior to Installation see "Grooved Coupling Assembly Instruction" found on page 6.
2.1 Single Tank Face Piping Installation – THS 3461 (4" Grooved
Connections)
The single tank face piping kit consists of:
(1) V3-04A, 4" 3-way diaphragm valve
without Flanges
(1) V3-04B, 4" 3-way diaphragm valve
with Flange, Thru port only.
(1) Tee Assembly
(1) Waste pipe extension
(1) Backwash extension
(1) Sightglass assembly (not shown)
(7) 4" Grooved Coupling Assembly
(3) 4" Flange gaskets
(24) 4" ¾-10 x 3 1/2" Zinc Plated Bolts
(48) Flat Washer, Zinc Plated
(24) Lock Washer, Zinc Plated
(24) Hex Nut, ¾-10, Zinc Plated
(1) Semi-automatic backwash controller
(See Controller Installation Section)
Verify that all parts listed above were supplied before beginning installation. Replacement parts
can be ordered through your local distributor.
Diaphragm Valve Face Piping Kit Installation Manual
5/31/12
Pg. 4 of 52
Rev. F