Pentair THS Series Installation And User Manual page 8

STEP 3: Backwash Extension Installation
Place gasket of grooved coupling assembly on grooved
connection of the Tee assembly along with the effluent
valve. Install the backwash extension on to the system
as shown in picture. It may be necessary to turn the
valves or tee assembly slightly to ensure a proper fit.
Install groove coupling assembly. Snug the nuts to "hand
tight", but do not fully tighten.
STEP 4: Waste Extension Installation
Place gasket of grooved coupling assembly on grooved
connection of influent valve. Install the waste extension
on to the system as shown in picture. Install groove
coupling assembly. Snug the nuts to "hand tight", but do
not fully tighten.
Diaphragm Valve Face Piping Kit Installation Manual
5/31/12
Pg. 7 of 52
Rev. F