Pentair THS Series Installation And User Manual page 12

STEP 4: Waste Extension Installation
Place isoplast bolts through bolt holes
on the waste extension flange (elbow
side), then place a flange gasket onto
the flange. Install waste extension onto
valve making sure it is oriented properly
with the flange on the elbow connecting
to the valve (see picture). Install
isoplast nuts. Snug the nuts to "hand
tight", but do not fully tighten.
STEP 5: Sightglass Installation
Assemble the sightglass by threading the glass portion into
the threaded saddle on the spool. Be sure to use pipe
thread sealant tape on the threads. Place isoplast bolts
through flange on the waste header, then place a flange
gasket on to the flange. Install the sightglass assembly on to
the waste flange. Orient the glass portion so it will be visible
during operation. Install isoplast nuts and snug them to
"hand tight", but do not fully tighten.
STEP 6: Final Adjustments
Once all piping is in place make any necessary adjustments and fully tighten all flange bolts.
Be sure to follow the bolt tightening pattern explained at the beginning of Section 2.0. Tighten
all Metallic type bolts to a maximum of 25 ft-lbs / Non Metallic to a maximum of 15 ft-
lbs / Non Metallic.
Note: All piping should be fully supported with adequate bracing and hangers
to prevent damage from weight and vibration.
STEP 7: Backwash Controller Installation
If a semi-automatic backwash controller was purchased, please refer to Section 3.1 of this
manual. If an automatic backwash controller was purchased, please refer to Section 3.3.
NOTE: There will be extra gaskets and isoplast hardware. This is to join the remaining
flanged connections of the filter system to any existing or new plumbing.
Diaphragm Valve Face Piping Kit Installation Manual
5/31/12
Pg. 11 of 52
Rev. F