Pentair THS Series Installation And User Manual page 11

STEP 2: Flanged Tee Assembly Installation
Place gasket on top flange of the influent valve.
Install the flanged tee assembly on the top of the
influent valve, and orient it as shown in picture.
Install isoplast bolts and nuts. Snug the nuts to
"hand tight", but do not fully tighten.
STEP 3: Backwash Extension Installation
Place isoplast bolts through the bolt holes on
the backwash extension flanges, then place
flange gaskets on to the flanges with the bolts.
Install the backwash extension on to the
system as shown in picture. It may be
necessary to turn the valves or flanged tee
assembly slightly to ensure a proper fit. Install
isoplast nuts. Snug the nuts to "hand tight",
but do not fully tighten.
Diaphragm Valve Face Piping Kit Installation Manual
5/31/12
Pg. 10 of 52
Rev. F