P/N
06
‐
791
‐
4
(Rev.
4)
Page
29
704
SW
10
th
Street,
P.O.
Box
610,
Blue
Springs,
Missouri
64013
‐
0610
U.S.A.
●
Phone:
(816)
229
‐
3405
●
www.fike.com
2.10.
Waterflow
Alarm
Switch
The
Potter
Waterflow
Alarm
Switch
Model
VSR
is
a
vane
type
waterflow
switch
for
use
on
water
mist
systems.
It
is
UL
Listed
and
FM
Approved
for
use
on
steel
pipe;
schedules
10
through
40,
sizes
2"
thru
3"
(50
mm
thru
80
mm).
LPC
approved
sizes
are
2"
thru
3"
(50
mm
through
80
mm).
The
VSR
may
also
be
used
as
a
sectional
waterflow
detector
on
large
systems.
The
VSR
contains
two
single
pole,
double
throw,
snap
action
switches
and
an
adjustable,
instantly
recycling
pneumatic
retard.
The
switches
are
actuated
when
a
flow
of
10
GPM
(38
LPM)
or
more
occurs
downstream
of
the
device.
The
flow
condition
must
exist
for
a
period
of
time
necessary
to
overcome
the
selected
retard
period
.
The
VSR
switches
and
retard
device
are
enclosed
in
a
general
purpose,
die
‐
cast
housing.
The
cover
is
held
in
place
with
two
tamper
resistant
screws
which
require
a
special
key
for
removal.
A
field
installable
cover
tamper
switch
is
available
as
an
option
which
may
be
used
to
indicate
unauthorized
removal
of
the
cover.
Specifications
Part
Number
02
‐
15337
‐
1
(2”)
02
‐
15337
‐
2
(2
1/2”)
02
‐
15337
‐
3
(3”)
Service
Pressure
450
psi
(31
bar)
Flow
Sensitivity
Range
for
Signal
4
‐
10
gpm
(15
‐
38
lpm)
Maximum
Surge
18
fps
(5.5
m/s)
Contact
Ratings
(Two
sets
of
SPDT
(Form
C))
10.0
Amps
at
125/250VAC
2.0
Amps
at
30VDC
Resistive
10
mA
min.
at
24VDC
Conduit
Entrances
Two
knockouts
provided
for
1/2"
conduit
Enclosure
Rating
NEMA
4
/
IP54
(indoor
or
outdoor)
Temperature
Range
40°F
–
120°F,
(4.5°C
–
49°C)
Listing
/
Approval
FM
Approved
UL
Listed
LPCB
Approved
VdS
Approved
Figure
27:
Pressure
Switch
Summary of Contents for DuraQuench
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