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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 gasket of grooved coupling assembly on to the
waste extension Install the sightglass assembly on to
the waste flange. Orient the glass portion so it will be
visible during operation. Install groove coupling
assembly. Snug the nuts 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. 8 of 52
Rev. F
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