Pentair THS Series Installation And User Manual page 14

STEP 2: 4" 3-way Valve Installation
Place a gasket of grooved coupling assembly on
the influent grooved pipe connection of each tank.
Place valves on influent grooved pipe
connections, install groove coupling
assembly(Refer to page 5). See picture at right for
proper orientation. Snug the nuts to "hand tight",
but do not fully tighten. This will allow for
adjustments during the remainder of the
installation. Please note the orientation of the
valves. The arrows on the valve covers should
be pointing toward the tank.
STEP 3: Influent/Effluent Header Installation
Place a gasket of grooved coupling assembly on
top grooved connection of each valve and the
effluent grooved pipe connection of each tank.
Install headers on to the valve/tank connections
(see pictures). Install groove coupling assembly.
The headers can be installed with the terminating
flange facing either left or right depending on what
is needed for the application. Snug the nuts to
"hand tight", but do not fully tighten. This will allow
for adjustments during the remainder of the
installation.
Diaphragm Valve Face Piping Kit Installation Manual
5/31/12
Pg. 13 of 52
Rev. F