F
LOW
S
WITCHES
Flow Switches – Liquid
(continued)
Series FS7-4
®
Industrial Liquid Flow Switches
• Universal design serves the widest variety of large pipe
applications, including heating and hydronic systems,
air conditioning, refrigeration and process work
• 1
1
⁄
4
" (32mm) NPT
• Brass with sealed tube construction
• Single pole, double throw snap switch
• Magnetic switching mechanism eliminates need for
bellows
• Sensitivity adjusting screw makes flow adjustment easy
• Paddles can be trimmed to suit application needs
• Optional features
– Extended paddle arm
– Two SPDT switches to make or break two separate
circuits
– Stainless steel
– BSPT threads
– Sprinkler service (UL & ULC listed)
F
LOW
S
WITCHES
Series FS7-4
C
DIA. HOLE
FOR ELEC.
CONNECTION
A
B
HJ
F
G
N
D
HEX.
PADDLE FOR
1-1/4" & 1-1/2"
(32 & 40mm) TEES
PADDLE
FOR 2" TO 5"
(50-125mm) PIPE
Packed loose
in carton.
K
E
M
2
3
4
5
6
L
• Minimum temperature (fluid or ambient) 32°F (0°C)
• Maximum temperature 300°F (149°C)
• Maximum operating pressure
300 psi (7 kg/cm
2
)
1000 psi (70 kg/cm
2
) – Stainless Steel models
Series FS7-4L
Electrical Ratings
Voltage
120 VAC
240 VAC
Motor Switch Rating (Amperes)
Full Load
Locked Rotor
7.4
3.7
44.4
22.2
Pilot Duty
125 VA at
120 or 240 VAC
50 or 60 cycles
Dimensions, in. (mm)
A
2
7
⁄
8
(73)
H
4
1
⁄
8
(105)
15
B
1
7
⁄
16
(37)
J
7
C
D
1
3
⁄
4
(45)
K
3
7
⁄
16
(87)
L
2
5
⁄
8
(67)
E
13
9
⁄
16
(345)
F
5
13
⁄
16
(148)
M
NPT
1
1
⁄
4
(32)
G
3
3
⁄
8
(86)
N
9
1
⁄
2
(241)
⁄
8
(22)
⁄
16
(24)
116
F
LOW
S
WITCHES
Flow Rates
Size NPT
in. (mm)
1
1
⁄
4
(32)
1
1
⁄
2
(40)
Ordering Information
Mode of Operation
Flow
No Flow
gpm (lpm) gpm (lpm)
4.8
7.7
6.3
10
9.9
15.8
15.3
23.7
(18.2)
(29.1)
(23.8)
(37.9)
(37.5)
(59.8)
(57.9)
(89.7)
3
5.9
3.6
7
5.9
11
9.5
17
(11.4)
(22.3)
(13.6)
(26.5)
(22.3)
(41.6)
(36)
(64.3)
Model
Part
Number Number Description
FS7-4
FS7-4D
FS7-4DF
FS7-4DS
FS7-4F
FS7-4F CAN
FS7-4J
FS7-4L
FS7-4LJ
FS7-4S
FS7-4SJ
FS7-DSJ
119700
119750
119825
119760
119800
119801
120060
119900
119980
120160
120171
120174
Industrial flow switch
FS7-4 w/2 SPDT switches
FS7-4D for sprinkler service (UL listed)
FS7-4D w/Stainless steel
FS7-4 for sprinkler service (UL listed)
FS7-4F ULC listed
FS7-4 w/ BSPT threads
FS7-4 w/extended paddle arm
FS7-4L w/BSPT threads
FS7-4 w/Stainless steel
FS7-4S w/BSPT threads
FS7-4S w/2 SPDT switches & BSPT threads
Weight
lbs. (kg)
5.5
5.7
5.7
5.7
5.5
5.5
5.5
5.5
5.5
5.0
5.0
5.0
(2.5)
(2.6)
(2.6)
(2.6)
(2.5)
(2.5)
(2.5)
(2.5)
(2.5)
(2.3)
(2.3)
(2.3)
Model
Settings
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
Factory or
Minimum
Maximum
2
(50)
2
1
⁄
2
(60)
3
(80)
24.4 (92.4)
35.5 (134.4)
33.3 (126)
61.4 (232.4)
44.4 (168.1)
84 (317.9)
56.3 (213.1)
114.8 (434.5)
104 (393.6)
210 (794.9)
184 (696.4)
369 (1397)
289
582
387
753
513
998
520
780
(1094)
(2203)
(1465)
(2850)
(1942)
(3777)
(1968)
(2952)
15.4 (58.3)
29.2 (110.5)
21.1 (79.9)
37.7 (142.7)
31 (117.3)
51
(193)
48.7 (184.3)
71 (270.6)
89 (336.9)
131 (495.8)
157 (594.2)
231 (874.3)
247 (934.9)
363 (1374)
323 (1223)
495 (1874)
428 (1620)
656 (2483)
260 (984)
693 (2623)
376 (1423)
1002 (3793)
589 (2229)
1570(59842)
861 (3259)
2297 (8694)
4 (100)
NOTE: DO NOT USE LIQUID FLOW SWITCHES
ON SYSTEMS WITH FLOW GREATER
THAN 10 FEET (3M) PER SECOND.
F
LOW
S
WITCHES
FS7-4
5 (125)
6 (150)
8 (200)
*
10 (250)
*
12 (300)
*
14 (355)
*
16 (405)
*
20 (500)
*
24 (600)
*
FS7-4L
30 (760)
*
752 (2846)
1128 (4269)
1177 (4455)
1766 (6684)
1723 (6522)
2584 (9870)
36 (910)
*
Values are ± 10%
*
Equipped with a 6" (152mm) paddle
117
京公网安备 11010802033920号
EEWORLD
