P/N
06
‐
791
‐
4
(Rev.
4)
Page
37
704
SW
10
th
Street,
P.O.
Box
610,
Blue
Springs,
Missouri
64013
‐
0610
U.S.A.
●
Phone:
(816)
229
‐
3405
●
www.fike.com
2.18.
Piping
Network
Pipe
or
Tube
Piping
or
tubing
used
in
the
water
mist
system
shall
be
of
noncombustible
copper,
stainless
steel,
or
CPVC
material
to
minimize
the
risk
of
corrosion
and
clogging
of
the
pipes
and
other
system
components.
Bursting/failure
pressures
shall
be
no
less
than
four
times
the
maximum
system
pressure
determined
by
hydraulic
calculation.
Acceptable
pipe
or
tube
materials
and
grades
include:
Stainless
Steel
Pipe
Material
Schedule
(minimum)
Type
Grade
Joining
Method
304/304L
40
Seamless
ASTM
A
‐
312
Threaded,
Cut
Groove,
Welded,
Brazed
304/304L
40
Welded
ASTM
A
‐
312
Threaded,
Cut
Groove,
Welded,
Brazed
316/316L
40
Seamless
ASTM
A
‐
312
Threaded,
Cut
Groove,
Welded,
Brazed
316/316L
40
Welded
ASTM
A
‐
312
Threaded,
Cut
Groove,
Welded,
Brazed
Stainless
Steel
Tube
Material
Wall
Thickness
(minimum)
Type
Grade
Joining
Method
304/304L
0.049”
Seamless
ASTM
A
‐
213/A
‐
269
Welded,
Brazed,
Flared,
Compression
304/304L
0.049”
Welded
ASTM
A
‐
249/A
‐
269
Welded,
Brazed,
Flared,
Compression
316/316L
0.049”
Seamless
ASTM
A
‐
213/A
‐
269
Welded,
Brazed,
Flared,
Compression
316/316L
0.049”
Welded
ASTM
A
‐
249/A
‐
269
Welded,
Brazed,
Flared,
Compression
Copper
Tube
Type
Grade
Joining
Method
K
ASTM
B
‐
75/B
‐
88
Welded,
Brazed,
Flared,
Compression
L
ASTM
B
‐
75/B
‐
88
Welded,
Brazed,
Flared,
Compression
CAUTION
To
prevent
clogging
of
the
system
nozzles,
it
is
prohibited
to
use
components
with
black
iron,
hot
galvanized
or
electro
galvanized
pipe
and
system
components
used
in
traditional
sprinkler
systems,
because
of
corrosion
and
risk
of
loose
zinc
flakes.
When
using
CPVC
pipe
on
a
wet
pipe
system,
the
pipe
and
fittings
must
be
approved
per
FM
1635,
Approval
Standard
for
Plastic
Pipe
and
Fittings
for
Automatic
Sprinkler
Systems
.
CPVC
pipe
is
not
permitted
to
be
used
in
seismically
active
areas
in
accordance
with
FM
Global
Loss
Prevention
Data
Sheet
2
‐
8.
CPVC
pipe
must
be
shielded
from
the
fire
area
by
a
non
‐
removable
barrier
having
a
fire
rating
equal
to
or
greater
than
1
hour.
A
pressure
reducing
valve
(See
Section
2.14)
MUST
be
installed
in
the
system
pipe
network
just
prior
to
transitioning
to
CPVC.
The
PRV
is
required
to
regulate
the
inlet
pressure
supplied
to
the
CPVC
distribution
piping
to
a
maximum
service
pressure
of
175
psi
(12
bar)
in
order
to
prevent
over
‐
pressurization.
Refer
to
FM
Datasheet
3
‐
11
for
the
use
of
the
PRV.
NOTE:
From
this
point
forward,
where
the
word
pipe
is
used
it
shall
imply
tubing
as
well.
Fittings
Fittings
shall
have
a
minimum
rated
system
design
working
pressure
equal
to
or
greater
than
the
maximum
operating
pressure
of
the
water
mist
system
at
130°F
(54°C)
and
shall
have
corrosion
resistance
at
least
equivalent
to
wrought
copper
fittings
conforming
to
ASME/ANSI
B16.22,
Wrought
Copper
and
Alloy
Solder
Joint
Pressure
Fittings.
Galvanic
Corrosion
To
avoid
galvanic
corrosion
from
occurring
in
the
water
mist
system,
all
component
materials
incorporated
into
the
system
shall
be
compatible
so
no
galvanic
reaction
can
take
place,
or
as
a
minimum
be
electrically
insulated
from
the
pipe
materials
to
the
satisfaction
of
FM
Approval
and
the
authorities
having
jurisdiction.
Summary of Contents for DuraQuench
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