Rev
5
MN890570
23
of
30
INSTALLATION
Step
Nine
5.
Stand
Pipe:
A
standpipe
maybe
used
to
dampen
turbulence
or
when
foam
is
present
in
the
application.
a. Pipe
can
be
made
of
any
material.
b. Select
a
minimum
3”
ID
pipe
for
the
stand
pipe.
i. A
2”
pipe
is
usable
with
the
Series
ULSS
&
ULSM,
but
is
the
minimum.
ii. Pipes
larger
than
3”
can
also
be
used.
c. Use
a
coupling
and
reducer
bushing
to
attach
the
Series
ULS
to
the
pipe.
i. Be
sure
to
use
a
plastic
reducing
bushing
such
as
ULS
‐
ACC
‐
121
(2”
T
x
1”
T)
fitting
or
the
ULS
‐
ACC
‐
221
(2”
S
x
1”
T)
fitting.
ii. For
the
Series
ULSL,
use
a
reducer
bushing
such
as
ULS
‐
ACC
‐
131
(3”
T
x
2”
T)
fitting
or
the
ULS
‐
ACC
‐
231
(3”
S
x
2”
T)
fitting.
d. The
pipe
length
should
run
the
measurement
span
and
the
bottom
of
the
pipe
should
remain
submerged
at
all
times
to
prevent
foam
from
entering
the
pipe.
e. Cut
a
45°
notch
at
the
bottom
of
the
pipe
and
drill
a
1/4”pressure
equalization
hole
in
the
dead
band.
f. The
pumps
should
not
drive
liquid
past
the
open
end
of
the
stand
pipe
which
causes
the
liquid
in
the
pipe
to
oscillate.
