MAGNETROL B74-2C90-HB9

External Cage
Displacer Actuated
Liquid Level Switches
DESCRIPTION
High Pressure Liquid Level Switches are displacer
actuated units, utilizing a single switch mechanism for
level alarm or control functions. These units are
designed for service pressures up to 5000 psig (345 bar)
and liquids with specific gravities of 0.40 and above.
They utilize the Magnetrol magnetic principle to assure
dependable performance.
FEATURES
• Fabricated carbon steel cages are standard for all
models.
• B74 available with 304 & 316 SS cages
• Sealed or flanged cages available
• Inconel displacer spring and stainless steel trim
• Stainless steel displacers
• Pressures to 5000 psig (345 bar)
• Temperatures to +750° F (+399° C)
• Specific gravity down to 0.40
• Choice of switch mechanism:
Dry contact
Pneumatic
Hermetically sealed
• Choice of switch enclosure:
NEMA 1 carbon steel for pneumatics
TYPE 4X/7/9 Class I,
Div. 1, Groups C & D polymer coated aluminum
TYPE 4X/7/9 Class I,
Div. 1, Group B polymer coated aluminum
Model C74
Flanged External Cage
with TYPE 4X/7/9 Switch Housing
APPLICATIONS
• Hydraulic accumulators
• Choice of tank connections:
NPT
Socketweld
Side/side flanges
Side/bottom flanges
• Optional custom high temperature insulation available.
See bulletin 41-106 for details.
• Natural gas receivers
• H.P. scrubbers
• Hydrocarbon flash tanks
OPTIONS
• Special levels/body extensions
• Gold switch contacts
• 316/304 SS chambers
• Interface (except B74)
• NACE
• Vent and drain connections
TECHNOLOGY
The weight of the displacer Œ is supported by the spring .
Rising liquid level imparts buoyancy forces on the displacer
allowing the spring to compress. The attraction sleeve Ž,
attached to the spring, moves upward into the field of a
permanent magnet . Magnet motion causes the switch 
to actuate. A non-magnetic barrier tube ‘ provides a static
pressure boundary between the switch mechanism and the
displacer assembly.
5
5
4
3
6
3
4
6
2
1
1
SPECIFICATIONS
SWITCH
MECHANISMS
AND
ENCLOSURES
SERIES J & K PNEUMATIC SWITCHES
SERIES F, HS, H1 & 8 HERMETICALLY SEALED SWITCHES
• Suited for applications where
electrical power is not available
• Ideal for use in salt and other
corrosive atmospheres
• Bleed and non-bleed designs
• Series “HS” and “H1” are positively
pressurized capsules for entire
mechanism and contacts
• Process temperatures
to +400° F (+204° C)
• Process temperatures
to +750° F (+399° C)
SWITCH ENCLOSURES
SERIES B, C & D DRY CONTACT SWITCHES
• Designed for AC and DC
current applications
• TYPE 4X/7/9 aluminum enclosures
• Designed to meet Class I, Div. 1,
Groups C & D and Class I, Div. 1
Group B
• Series C for process temperatures
to +450° F (+232° C)
• Optional housing heaters and drains
available for some enclosures
• Pneumatic switch mechanisms
available with a NEMA 1 enclosure
BASIC ELECTRICAL RATINGS
Voltage
120 VAC
240 VAC
24 VDC
120 VDC
240 VDC
2
B
15.00
15.00
6.00
0.50
0.25
Switch Series and Non-Inductive Ampere Rating
C
D
F
HS
H1
15.00
15.00
10.00
1.00
0.50
10.00
—
10.00
10.00
3.00
0.25
—
4.00
0.30
—
5.00
5.00
5.00
0.50
0.25
1.00
1.00
1.00
0.40
—
8
1.00
—
3.00
—
—
AGENCY
APPROVALS
AGENCY
APPROVED MODEL
AREA CLASSIFICATION
FM
All with an electric switch mechanism and a housing
listed as TYPE 4X/7/9
Class I, Div 1, Groups C & D
Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing
listed as TYPE 4X/7/9 Class I, Div 1, Group B
Class I, Div 1, Groups B, C & D
Class II, Div 1, Groups E, F & G
All with a Series F, H1, HS or 8 electric switch
mechanism and a housing listed as CSA TYPE 4X
Class I, Div 2, Groups B, C & D
All with an electric switch mechanism and a housing
listed as TYPE 4X/7/9
Class I, Div 1, Groups C & D
Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and a housing
listed as TYPE 4X/7/9 Class I, Div 1, Group B
Class I, Div 1, Groups B, C & D
Class II, Div 1, Groups E, F & G
All with an electric switch mechanism and an
ATEX housing
ATEX II 2 G EEx d IIC T6
94/9/EC
IEC Ex Ex d IIC T6
IP 66
Low Voltage Directives 2006/95/EC
Per Harmonized Standard:
EN 61010-1/1993 & Amendment No. 1
Installation Category II
Pollution Degree 2
CSA
ATEX / IEC Ex Œ
CE
ΠIEC Installation Instructions:
The cable entry and closing devices shall be Ex d certified suitable for the conditions of use and correctly installed.
For ambient temperatures above +55° C or for process temperatures above +150° C, suitable heat resistant cables shall be used.
Heat extensions (between process connection and housing) shall never be insulated.
Special conditions for safe use:
When the equipment is installed in process temperatures higher than +85° C the temperature classification must be reduced
according to the following table as per IEC60079-0.
Maximum Process
Temperature
Temperature
Classification
< 85° C
T6
< 100° C
T5
< 135° C
T4
< 200° C
T3
< 300° C
T2
< 450° C
T1
These units are in conformity with IECEx KEM 05.0020X
Classification Ex d IIC T6
Tambient -40° to +70° C
3
ACTUATION
SEALED
INCHES
CAGE
LEVELS
DESIGN
(MM)
HL
HL
LL
Sealed Chamber w/NPT or Socket weld
Side/Bottom Connections
(B74, H13, H31, H51)
LL
Sealed Chamber w/NPT or Socket weld
Side/Side Connections
(H13, H31, H51)
HL
LL
Sealed Chamber
Side/Side Flange Connections
(B74 only)
HL
HL
Sealed Chamber
Side/Side Flange Connections
(H13, H31, H51)
4
LL
Sealed Chamber
Side/Bottom Flange Connections
(B74, H13, H31, H51)
LL
ACTUATION
SEALED
INCHES
CAGE
LEVELS
DESIGN
(MM)
Specific Gravity
0.40
Model
Code
B74
H13
H31
H51
0.50
0.60
0.70
0.80
0.90
1.00
Process
Temp
°F (°C)
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
100
(38)
1.30
(33)
4.77
(121)
2.17
(55)
5.00
(127)
2.73
(69)
5.16
(131)
3.13
(80)
5.28
(134)
3.44
(87)
5.37
(136)
3.67
(93)
5.45
(138)
3.86
(98)
5.51
(140)
200
(93)
1.24
(31)
4.70
(119)
2.13
(54)
4.95
(126)
2.70
(69)
5.11
(130)
3.11
(79)
5.24
(133)
3.42
(87)
5.34
(136)
3.66
(93)
5.41
(137)
3.85
(98)
5.48
(139)
300
(149)
1.18
(30)
4.62
(117)
2.09
(53)
4.88
(124)
2.67
(68)
5.06
(129)
3.09
(78)
5.19
(132)
3.40
(86)
5.30
(135)
3.64
(92)
5.38
(137)
3.84
(98)
5.45
(138)
100
(38)
5.09
(129)
9.04
(230)
6.26
(159)
9.50
(241)
7.04
(179)
9.81
(249)
7.59
(193)
10.03
(255)
8.01
(203)
10.20
(259)
8.33
(212)
10.33
(262)
8.59
(218)
10.43
(265)
200
(93)
4.73
(120)
8.63
(219)
5.97
(152)
9.17
(233)
6.79
(172)
9.54
(242)
7.38
(187)
9.80
(249)
7.82
(199)
9.99
(254)
8.17
(208)
10.14
(258)
8.44
(214)
10.27
(261)
300
(149)
4.31
(109)
8.15
(207)
5.63
(143)
8.79
(223)
6.51
(165)
9.22
(234)
7.14
(181)
9.53
(242)
7.62
(194)
9.76
(248)
7.98
(203)
9.93
(252)
8.28
(210)
10.08
(256)
400
(204)
4.06
(103)
7.69
(195)
5.25
(133)
8.31
(211)
6.19
(157)
8.81
(224)
6.88
(175)
9.19
(233)
7.38
(187)
9.50
(241)
7.75
(197)
9.69
(246)
8.06
(205)
9.88
(251)
500
(260)
n/a
n/a
4.81
(122)
7.88
(200)
5.81
(148)
8.44
(214)
6.56
(167)
8.88
(226)
7.06
(179)
9.19
(233)
7.50
(191)
9.44
(240)
7.88
(200)
9.63
(245)
100
(38)
3.06
(78)
6.50
(165)
4.63
(118)
7.44
(189)
5.69
(145)
8.06
(205)
6.44
(164)
8.50
(216)
6.94
(176)
8.88
(226)
7.38
(187)
9.13
(232)
7.75
(197)
9.31
(236)
200
(93)
n/a
n/a
4.06
(109)
6.81
(181)
5.19
(138)
7.56
(198)
6.00
(157)
8.06
(211)
6.56
(171)
8.44
(219)
7.06
(1.83)
8.75
(227)
7.44
(192)
9.00
(232)
300
(149)
n/a
n/a
3.38
(86)
6.19
(157)
4.63
(118)
7.00
(178)
5.50
(140)
7.56
(192)
6.19
(157)
8.06
(205)
6.69
(170)
8.38
(213)
7.13
(181)
8.63
(219)
400
(204)
n/a
n/a
n/a
n/a
4.06
(103)
6.38
(162)
5.00
(127)
7.06
(179)
5.75
(146)
7.56
(192)
6.31
(160)
7.94
(202)
6.75
(171)
8.25
(210)
500
(260)
n/a
n/a
n/a
n/a
3.38
(86)
5.69
(145)
4.44
(113)
6.44
(164)
5.25
(133)
7.06
(179)
5.88
(149)
7.50
(191)
6.38
(162)
7.88
(200)
100
(38)
2.75
(70)
6.25
(159)
4.31
(109)
7.19
(183)
5.38
(137)
7.75
(197)
6.13
(156)
8.19
(208)
6.63
(168)
8.56
(217)
7.06
(179)
8.81
(224)
7.44
(189)
9.00
(229)
200
(93)
n/a
n/a
3.75
(95)
6.56
(167)
4.88
(124)
7.25
(184)
5.69
(145)
7.81
(198)
6.31
(160)
8.19
(208)
6.75
(171)
8.50
(216)
7.13
(181)
8.69
(221)
300
(149)
n/a
n/a
3.13
(80)
5.88
(149)
4.38
(111)
6.69
(170)
5.25
(133)
7.31
(186)
5.88
(149)
7.75
(197)
6.44
(164)
8.13
(207)
6.81
(173)
8.38
(213)
400
(204)
n/a
n/a
n/a
n/a
3.75
(95)
6.06
(154)
4.75
(121)
6.75
(171)
5.44
(138)
7.25
(184)
6.00
(152)
7.69
(195)
6.50
(165)
8.00
(203)
500
(260)
n/a
n/a
n/a
n/a
3.13
(80)
5.38
(137)
4.19
(106)
6.19
(157)
4.94
(125)
6.75
(171)
5.56
(141)
7.19
(183)
6.06
(154)
7.56
(192)
Levels ±0.25" (6 mm)
5
DIMENSIONAL
SEALED
INCHES
CAGE
SPECIFICATIONS
DESIGN
(MM)
F
F
G
G
7.94*
(201)
7.94*
(201)
E Plugged
E Plugged
E
E
HL
C
F
LL
HL
C
Rotation
clearance
G
LL
A
A
7.94
(201)
E
E
plugged
Bottom
connection
D
B
B
1" NPT
drain
Sealed Chamber w/NPT or Socket weld
Side/Bottom Connections
(B74, H13, H31, H51)
HL
Sealed Chamber w/NPT or Socket weld
Side/Side Connections
(H13, H31, H51)
LL
C
A
F
G
F
G
7.94*
(201)
B
7.94*
(201)
E Plugged
E Plugged
E
Sealed Chamber
Side/Side Flange Connections
(B74 only)
E
HL
HL
C
LL
LL
C
A
A
D
1" NPT
drain
B
B
Sealed Chamber
Side/Bottom Flange Connections
(B74, H13, H31, H51)
Sealed Chamber
Side/Side Flange Connections
(H13, H31, H51)
Conduit Connections E
Housing
Electric Switches:
NEMA 1
Type 4X/7/9:
Group B:
1" NPT
1" NPT
Pneumatic Switches:
NEMA 1:
6
⁄4" NPT
TYPE 4X/7/9*
TYPE 4X/7/9 Group B*
F
G
4.69 (119) 5.00 (127)
5.93 (151)
3.78 (96)
1
* These dimensions increase by 2.19 (56) when used
with Series HS switches with terminal blocks.
DIMENSIONAL
SEALED
INCHES
CAGE
SPECIFICATIONS
DESIGN
(MM)
Dimensions–Upper Side/Bottom
NPT or SW
Model Connection
Code
Size
A
B
1"
B74
H13
1–1 ⁄2"
8.32 (211)
3.69 (94)
2"
3.81 (97)
1"
2.77 (70)
1–1 ⁄2"
1
14.25 (362)
3.19 (81)
2"
1"
H31
H51
C
3.27 (83)
1
1–11⁄2"
Flanges
A
B
C
10.56 (268) 12.87 (327) 6.38 (162) 15.12 (384)
11.56 (295)
12.56 (319) 6.61 (168) 14.81 (376)
12.43 (316) 6.68 (170) 14.69 (373)
6.39 (162)
20.63 (524) 17.75 (451) 6.69 (170) 24.12 (613)
3.31 (84)
6.81 (173)
4.40 (112)
7.90 (201)
14.25 (362) 4.53 (115) 21.13 (537) 17.50 (444) 7.84 (199) 24.38 (619)
2"
4.91 (125)
10.00 (254)
1"
4.50 (114)
8.00 (203)
1–1 ⁄2"
1
15.60 (396) 4.63 (118) 23.01 (584) 19.47 (495) 7.93 (201) 26.89 (683)
2"
5.00 (127)
10.00 (254)
Dimensions–Side/Side
NPT or SW
Model Connection
Code
Size
A
Std.
14"
B
Flanges
C
Std.
14"
D
1–11⁄2"
n/a
n/a
n/a
n/a
n/a
n/a
H31
H51
13.31
(338)
n/a
2.77
(70)
1"
1–11⁄2"
14"
13.18
(335)
2"
H13
Std.
13.62
(346)
1"
B74
A
11.50
(292)
14.00
(356)
3.19
(81)
B
15.88
(403)
6.61
(168)
15.56
(395)
6.68
(170)
15.44
(392)
20.63
(524)
23.12
(587)
2.75
(70)
11.50
(292)
14.00
(356)
6.69
(170)
6.81
(173)
1"
4.40
(112)
7.90
(201)
14.00
(356)
4.53
(115)
21.13
(537)
23.63
(600)
2.75
(70)
11.50
(292)
14.00
(356)
7.84
(199)
2"
4.91
(125)
10.00
(254)
1"
4.50
(114)
8.00
(203)
1–11⁄2"
2"
11.64
(296)
14.00
(356)
4.63
(118)
5.00
(127)
14"
D
n/a
n/a
20.63
(524)
23.12
(587)
2.75
(70)
21.13
(537)
23.63
(600)
2.75
(70)
23.01
(584)
23.57
(599)
3.96
(101)
6.39
(162)
3.31
(84)
11.50
(292)
Std.
6.38
(162)
2"
1–11⁄2"
C
23.01
(584)
23.57
(599)
3.96
(101)
11.64
(296)
14.00
(356)
7.93
(201)
10.00
(254)
7
ACTUATION
FLANGED
INCHES
TOP
LEVELS
CAGE
DESIGN
(MM)
HL
LL
HL
Flanged Top Chamber w/NPT or
Socket weld Side/Bottom Connections
(C74, H15, H32, H52)
LL
Flanged Top Chamber w/NPT or
Socket weld Side/Side Connections
(H15, H32, H52)
HL
LL
Flanged Top Chamber
Side/Side Flange Connections
(C74 only)
HL
LL
HL
Flanged Top Chamber
Side/Bottom Flange Connections
(C74, H15, H32, H52)
8
Flanged Top Chamber
Side/Side Flange Connections
(H15, H32, H52)
LL
ACTUATION
FLANGED
INCHES
TOP
LEVELS
CAGE
DESIGN
(MM)
Specific Gravity
0.40
Model
Code
C74
H15
H32
H52
0.50
0.60
0.70
0.80
0.90
1.00
Process
Temp
°F (°C)
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
HL
LL
100
(38)
4.38
(111)
8.24
(209)
5.56
(141)
8.74
(222)
6.35
(161)
9.07
(230)
6.92
(176)
9.31
(236)
7.34
(186)
9.49
(241)
7.67
(195)
9.63
(245)
7.94
(202)
9.74
(247)
200
(93)
4.01
(102)
7.83
(199)
5.27
(134)
8.41
(214)
6.11
(155)
8.80
(224)
6.71
(170)
9.08
(231)
7.16
(182)
9.28
(236)
7.51
(191)
9.44
(240)
7.79
(198)
9.57
(243)
300
(149)
3.59
(91)
7.44
(189)
5.00
(127)
8.04
(204)
5.83
(148)
8.49
(216)
6.47
(164)
8.81
(224)
6.95
(177)
9.05
(230)
7.32
(186)
9.24
(235)
7.62
(194)
9.39
(239)
400
(204)
n/a
n/a
4.63
(118)
7.62
(194)
5.52
(140)
8.14
(207)
6.25
(159)
8.51
(216)
6.72
(171)
8.79
(223)
7.12
(181)
9.00
(229)
7.50
(191)
9.18
(233)
500
(260)
n/a
n/a
4.15
(105)
7.15
(182)
5.18
(132)
7.75
(197)
5.91
(150)
8.18
(208)
6.46
(164)
8.50
(216)
6.89
(175)
8.75
(222)
7.23
(184)
8.94
(227)
100
(38)
2.47
(63)
5.93
(151)
3.90
(99)
6.74
(171)
4.86
(123)
7.29
(185)
5.54
(141)
7.67
(195)
6.05
(154)
7.96
(202)
6.44
(164)
8.19
(208)
6.76
(172)
8.37
(213)
200
(93)
2.12
(54)
5.54
(141)
3.62
(92)
6.43
(163)
4.62
(117)
7.02
(178)
8.34
(136)
7.45
(189)
5.87
(149)
7.77
(197)
6.29
(160)
8.02
(204)
6.62
(168)
8.21
(209)
300
(149)
n/a
n/a
3.30
(84)
6.07
(154)
4.36
(111)
6.73
(171)
5.11
(130)
7.19
(183)
5.67
(144)
7.55
(192)
6.11
(155)
7.82
(199)
6.46
(164)
8.04
(204)
400
(204)
n/a
n/a
2.94
(133)
5.63
(211)
4.00
(157)
6.38
(224)
4.81
(175)
6.88
(233)
5.44
(187)
7.25
(241)
5.88
(197)
7.56
(246)
6.25
(205)
7.81
(251)
500
(260)
n/a
n/a
2.50
(64)
5.19
(132)
3.69
(94)
6.00
(152)
4.56
(116)
6.56
(167)
5.19
(132)
7.00
(178)
5.69
(145)
7.31
(186)
6.06
(154)
7.63
(194)
100
(38)
2.75
(70)
6.25
(159)
4.31
(109)
7.19
(183)
5.38
(137)
7.75
(197)
6.13
(156)
8.19
(208)
6.63
(168)
8.56
(217)
7.06
(179)
8.81
(224)
7.44
(189)
9.00
(229)
200
(93)
n/a
n/a
3.75
(95)
6.56
(167)
4.88
(124)
7.25
(184)
5.69
(145)
7.81
(198)
6.31
(160)
8.19
(208)
6.75
(171)
8.50
(216)
7.13
(181)
8.69
(221)
300
(149)
n/a
n/a
3.13
(80)
5.88
(149)
4.38
(111)
6.69
(170)
5.25
(133)
7.31
(186)
5.88
(149)
7.75
(197)
6.44
(164)
8.13
(207)
6.81
(173)
8.38
(213)
400
(204)
n/a
n/a
n/a
n/a
3.75
(95)
6.06
(154)
4.75
(121)
6.75
(171)
5.44
(138)
7.25
(184)
6.00
(152)
7.69
(195)
6.50
(165)
8.00
(203)
500
(260)
n/a
n/a
n/a
n/a
3.13
(80)
5.38
(137)
4.19
(106)
6.19
(157)
4.94
(125)
6.75
(171)
5.56
(141)
7.19
(183)
6.06
(154)
7.56
(192)
100
(38)
2.75
(70)
6.25
(159)
4.31
(109)
7.19
(183)
5.38
(137)
7.75
(197)
6.13
(156)
8.19
(208)
6.63
(168)
8.56
(217)
7.06
(179)
8.81
(224)
7.44
(189)
9.00
(229)
200
(93)
n/a
n/a
3.75
(95)
6.56
(167)
4.88
(124)
7.25
(184)
5.69
(145)
7.81
(198)
6.31
(160)
8.19
(208)
6.75
(171)
8.50
(216)
7.13
(181)
8.69
(221)
300
(149)
n/a
n/a
3.13
(80)
5.88
(149)
4.38
(111)
6.69
(170)
5.25
(133)
7.31
(186)
5.88
(149)
7.75
(197)
6.44
(164)
8.13
(207)
6.81
(173)
8.38
(213)
400
(204)
n/a
n/a
n/a
n/a
3.75
(95)
6.06
(154)
4.75
(121)
6.75
(171)
5.44
(138)
7.25
(184)
6.00
(152)
7.69
(195)
6.50
(165)
8.00
(203)
500
(260)
n/a
n/a
n/a
n/a
3.13
(80)
5.38
(137)
4.19
(106)
6.19
(157)
4.94
(125)
6.75
(171)
5.56
(141)
7.19
(183)
6.06
(154)
7.56
(192)
Levels ±0.25" (6 mm)
9
DIMENSIONAL
FLANGED
INCHES
TOP
SPECIFICATIONS
CAGE
DESIGN
(MM)
F
F
G
7.94*
(201)
G
7.94*
(201)
E Plugged
E
E Plugged
E
F
G
HL
C
7.94
(201)
LL
E
HL
C
A
LL
A
E
Plugged
D
Bottom
connection
B
1'' NPT
drain
HL
LL
C
Flanged Top Chamber w/NPT or
Socket weld Side/Bottom Connections
(C74, H15, H32, H52)
A
B
Flanged Top Chamber w/NPT or
Socket weld Side/Side Connections
(H15, H32, H52)
F
G
F
G
7.94*
(201)
E Plugged
7.94*
(201)
B
E
Flanged Top Chamber
Side/Side Flange Connections
(C74 only)
HL
C
E Plugged
E
LL
HL
C
LL
A
A
D
B
1" NPT
drain
Flanged Top Chamber
Side/Bottom Flange Connections
(C74, H15, H32, H52)
Flanged Top Chamber
Side/Side Flange Connections
(H15, H32, H52)
Conduit Connections E
Housing
Electric Switches:
NEMA 1
Type 4X/7/9:
Group B:
1" NPT
1" NPT
Pneumatic Switches:
NEMA 1:
10
B
⁄4" NPT
TYPE 4X/7/9*
TYPE 4X/7/9 Group B*
F
G
4.69 (119) 5.00 (127)
5.93 (151)
3.78 (96)
1
* These dimensions increase by 2.19 (56) when used
with Series HS switches with terminal blocks.
DIMENSIONAL
FLANGED
INCHES
TOP
SPECIFICATIONS
CAGE
DESIGN
(MM)
Dimensions–Upper Side/Bottom
NPT or SW
Model Connection
Code
Size
C74
300#
C74
600#
A
B
C
1"
15.65 (398)
2.77 (70)
22.69 (576)
1
1–1 ⁄2"
15.77 (401)
3.19 (81)
22.81 (579) 18.33 (466) 6.19 (157) 25.38 (645)
2"
15.90 (404)
3.31 (84)
22.94 (583)
6.25 (159)
1"
15.65 (398)
2.77 (70)
23.06 (586)
5.45 (138)
1
1–1 ⁄2"
15.77 (401)
3.19 (81)
23.19 (589) 18.33 (466) 6.19 (157) 26.38 (670)
2"
15.90 (404)
3.31 (84)
23.31 (592)
1"
H15
H32
H52
Flanges
1–1 ⁄2"
1
14.85 (377)
3.69 (91)
3.81 (97)
1"
4.40 (112)
1–1 ⁄2"
4.91 (125)
1"
4.50 (114)
1–1 ⁄2"
C
5.45 (138)
6.25 (159)
23.12 (587) 18.33 (466) 9.50 (241) 26.63 (676)
14.25 (362) 4.53 (115) 21.38 (543) 17.50 (444) 10.00 (254) 24.63 (626)
2"
1
B
3.62 (89)
2"
1
A
15.60 (396) 4.63 (118) 23.88 (607) 19.21 (488) 10.00 (254) 27.50 (698)
2"
5.00 (127)
Dimensions–Side/Side
NPT or SW
Model Connection
Code
Size
A
Std.
14"
B
Flanges
C
Std.
14"
D
A
Std.
14"
1"
C74
300#
1–11⁄2"
2"
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
18.97
(482)
n/a
23.12
(587)
25.63
(651)
3.35
(85)
11.50
(292)
14.00
(356)
9.50
(241)
23.12
(587)
25.63
(651)
3.35
(85)
21.38
(543)
23.88
(607)
2.75
(70)
11.50
(292)
14.00
(356)
10.00
(254)
21.38
(543)
23.88
(607)
2.75
(70)
23.88
(607)
26.25
(667)
3.96
(101)
11.64
(296)
14.00
(356)
10.00
(254)
23.88
(607)
26.25
(667)
3.96
(101)
11.50
(292)
14.00
(356)
11.50
(292)
14.00
(356)
11.64
(296)
14.00
(356)
1"
1–11⁄2"
26.38
(670)
18.97
(482)
2"
H52
n/a
n/a
1"
1–11⁄2"
n/a
n/a
2"
H32
26.00
(660)
n/a
1"
1–11⁄2"
14"
n/a
2"
H15
D
Std.
n/a
1"
1–11⁄2"
5.45
(138)
6.19
(157)
6.25
(159)
5.45
(138)
6.19
(157)
6.25
(159)
C
n/a
2"
C74
600#
B
3.62
(92)
3.69
(94)
3.81
(97)
4.40
(112)
4.53
(115)
4.91
(125)
4.50
(114)
4.63
(115)
5.00
(127)
11
MODEL
NUMBER
STANDARD
PRESSURE
Models available for quick shipment, usually within one week after factory
receipt of a complete purchase order, through the Expedite Ship Plan (ESP).
SPECIFIC GRAVITY AND PRESSURE RATING CODE
Model
Cage
Style
Cage
Material
B74
Pressure Rating at given Temperature – psi (bar)
+100° F
+300° F
+500° F Œ
(+38° C)
(+149° C)
(+260° C)
1480
1315
n/a
(102)
(91)
1440
1200
n/a
(99)
(83)
1440
1240
n/a
(99)
(85)
1500
1500
1350
(103)
(103)
(93)
740
740
740
(51)
(51)
(51)
1480
1400
1190
(102)
(97)
(82)
1500
1500
1350
(103)
(103)
(93)
Minimum
S.G.
Carbon Steel
B74
304 Stainless Steel
0.40
Sealed
B74
316 Stainless Steel
H13
Carbon Steel
C74
(300#)
C74
(600#)
See Chart
Below
300# Carbon steel
Flanged
See Chart
Below
600# Carbon steel
H15
Carbon steel
Minimum Specific Gravity
Up to Temperature Shown
Model
+100° F
(+38° C)
+200° F
(+93° C)
+300° F
(+149° C)
+400° F
(+204° C)
+500° F
(+260° C)
H13
0.40
0.40
0.40
0.41
0.44
H15
0.40
0.43
0.46
0.48
0.50
C74
0.40
0.40
0.40
0.42
0.44
Sleeve
400 SS
400 SS
316 SS
316 SS
316 SS
Spring Trim
Inconel & 316 SS
316 SS
Inconel & 316 SS
Inconel & 316 SS
Inconel & 316 SS
MATERIALS OF CONSTRUCTION
Code
1
2
2
3
4
Applicable Models
B74, C74, H13, H15
H13, H15
B74, C74
B74
B74
Cage
Carbon Steel
Carbon Steel
Carbon Steel
304 Stainless Steel
316 Stainless Steel
TANK CONNECTION TYPE AND SIZE
B74
1" 11⁄2"
C74 300 lb
2"
1"
11⁄2"
2"
11⁄2"
2"
H13 & H15
1"
11⁄2" 2"
Connection Type
B20 C20 D20 B70 C70 D70 B90 C90 D90 B20 C20 D20
NPT
B30 C30 D30 B80 C80 D80 B01 C01 D01 B30 C30 D30
Socketweld
N30 P30 Q30
—
—
—
N40 P40 Q40 N40 P40 Q40
N50 P50 Q50
—
—
—
N30 P30 Q30 150 lb ANSI flanges
—
—
—
N40 P40 Q40 300 lb ANSI flanges
—
—
—
—
—
—
—
—
—
—
—
—
B40 C40 D40
—
—
—
—
—
—
—
—
—
B44 C44 D44
—
—
—
—
—
—
—
—
—
B50 C50 D50
—
—
—
—
—
—
—
—
—
B54 C54 D54
—
—
—
—
—
—
S30 T30 V30
—
—
—
—
—
—
S34 T34 V34
—
—
—
S40 T40 V40
—
—
—
S44 T44 V44
S30 T30 V30
—
—
—
S40 T40 V40 S40 T40 V40
—
—
—
S50 T50 V50
—
12
C74 600 lb
1"
—
—
—
—
—
—
—
—
—
—
—
C/C
Location
Std
side/bottom
N50 P50 Q50 N50 P50 Q50 600 lb ANSI flanges
S50 T50 V50 S50 T50 V50
—
—
—
S54 T54 V54
NPT
Socketweld
150 lb ANSI flanges
300 lb ANSI flanges
600 lb ANSI flanges
Std
14"
Std
14"
Std
14"
Std
14"
Std
14"
side/side
MODEL
NUMBER
STANDARD
CONTINUED
PRESSURE
ELECTRIC SWITCH MECHANISM AND ENCLOSURE Ž
TYPE 4X/7/9 Aluminum Enclosure
Maximum Process 
Temperature ° F (° C)
One
Set Point
Series B Snap Switch
250
(121)
Series C Snap Switch
Switch Description 
Class I, Div. 1,
Groups C & D
Class I, Div. 1,
Group B
ATEX
Ex II 2G
EEx d IIC T6
SPDT
DPDT
BKQ
BNQ
BKS
BNS
BA9
BB9
450
(232)
SPDT
DPDT
CKQ
CNQ
CKS
CNS
CA9
CB9
Series D Snap Switch for
DC Current Application
250
(121)
SPDT
DPDT
DKQ
DNQ
DKS
DNS
DA9
DB9
Series F Hermetically Sealed
Snap Switch
500
(260)
SPDT
DPDT
FKQ
FNQ
FKS
FNS
FA9
FB9
SPDT
DPDT
HMC
HMF
SPDT
DPDT
SPDT
DPDT
Series HS 5 Amp Hermetically ‘
Sealed Snap Switch w/Wiring Leads
Series HS 5 Amp Hermetically ‘
Sealed Snap Switch w/Terminal Block
Series 8 Hermetically Sealed
Snap Switch
500 ’
(260)
500 ’
(260)
500
(260)
HM3
HM7
HEK “
HET “
HM4
HM8
HA9
HB9
8KQ
8NQ
8KS
8NS
8A9
8B9
N/A
PNEUMATIC SWITCH MECHANISM AND ENCLOSURE
Switch
Description
Maximum
Supply
Pressure
Series J
100 psig
(7 bar)
Bleed Type
60 psig
(4 bar)
Series k
Non-Bleed
100 psig
(7 bar)
Œ

Ž


‘
’
“
Maximum
Process
Temperature
+400° F
(+204° C)
+400° F
(+204° C)
Bleed
Orifice
Diameter
NEMA 1
B74,C74-1,
300# C74-2
H13, H15
600# C74-2
.063
(1.6 mm)
JDE
JKE
JKE
.094
(2.4 mm)
JEE
JLE
JLE
—
KOE
KOE
KPE
Consult factory for temperatures up to +750° F (+399° C).
Maximum temperature rating +200° F (+93° C) with type 316 SS spring.
Consult factory for TYPE 4X/7/9 cast iron housings.
Uncontrolled housing heater or drain available in TYPE 4X/7/9 enclosures.
Consult factory for switch codes.
Process temperature based on +100° F (+38° C) ambient.
HS switch not available on 600# C74 model with materials of construction
code –2.
On condensing applications, temperature down-rated to +400° F (204° C)
process at +100° F (+38° C) ambient.
CSA approval does not apply to Series HE switches.
13
MODEL
HIGH
NUMBER
PRESSURE
SPECIFIC GRAVITY AND PRESSURE RATING CODE
Model
Cage
Style
Cage
Material
Minimum
S.G.
Carbon Steel
See Chart
Below
Pressure Rating at given Temperature – psi (bar)
+100° F
+300° F
+500° F Œ
(+38° C)
(+149° C)
(+260° C)
4150
3920
—
(286)
(270)
5000
5000
4475
(345)
(345)
(309)
4150
3920
—
(286)
(270)
5000
5000
4475
(345)
(345)
(309)
H31
Sealed
H51
H32
Flanged
H52
Minimum Specific Gravity
Up to Temperature Shown
+100° F
(+38° C)
+200° F
(+93° C)
+300° F
(+149° C)
+400° F
(+204° C)
+500° F
(+260° C)
0.40
0.44
0.47
0.51
0.56
MATERIALS OF CONSTRUCTION
No.
1
Cage
Carbon Steel
Sleeve
400 SS
Spring Trim
Inconel & 316 SS
TANK CONNECTION TYPE AND SIZE
H31 & H32
14
H51 & H52
1"
11⁄2"
2"
1"
11⁄2"
2"
Connection Type
B20
C20
D20
B20
C20
D20
NPT
B30
C30
D30
B30
C30
D30
Socketweld
N50
P50
Q50
—
—
—
600 lb ANSI flanges
N60
P60
Q60
N60
P60
Q60
900 lb ANSI flanges
N70
P70
Q70
N70
P70
Q70
1500 lb ANSI flanges
2500 lb ANSI flanges
—
—
—
N80
P80
Q80
B40
C40
D40
B40
C40
D40
B44
C44
D44
B44
C44
D44
B50
C50
D50
B50
C50
D50
B54
C54
D54
B54
C54
D54
S50
T50
V50
—
—
—
S54
T54
V54
—
—
—
S60
T60
V60
S60
T60
V60
S64
T64
V64
S64
T64
V64
S70
T70
V70
S70
T70
V70
S74
T74
V74
S74
T74
V74
—
—
—
S80
T80
V80
—
—
—
S84
T84
V84
NPT
Socketweld
600 lb ANSI flanges
900 lb ANSI flanges
1500 lb ANSI flanges
2500 lb ANSI flanges
C/C
Location
Std
side/bottom
Std
14"
Std
14"
Std
14"
Std
14"
Std
14"
Std
14"
side/side
MODEL
HIGH
NUMBER
CONTINUED
PRESSURE
ELECTRIC SWITCH MECHANISM AND ENCLOSURE 
Type 4X/7/9 Aluminum Enclosure
Maximum Process 
Temperature ° F (° C)
One
Set Point
Series B Snap Switch
250
(121)
Series C Snap Switch
Switch Description Ž
Class I, Div. 1,
Groups C & D
Class I, Div. 1,
Group B
ATEX
Ex II 2G
EEx d IIC T6
SPDT
DPDT
BKQ
BNQ
BKS
BNS
BA9
BB9
450
(232)
SPDT
DPDT
CKQ
CNQ
CKS
CNS
CA9
CB9
Series D Snap Switch for
DC Current Application
250
(121)
SPDT
DPDT
DKQ
DNQ
DKS
DNS
DA9
DB9
Series F Hermetically Sealed
Snap Switch
500
(260)
SPDT
DPDT
FKQ
FNQ
FKS
FNS
FA9
FB9
500
(260)
SPDT
DPDT
HMC
HMF
500
(260)
SPDT
DPDT
HM3
HM7
HM4
HM8
HA9
HB9
500
(260)
SPDT
DPDT
8KQ
8NQ
8KS
8NS
8A9
8B9
Series HS 5 Amp Hermetically ‘
Sealed Snap Switch w/Wiring Leads
Series HS 5 Amp Hermetically ‘
Sealed Snap Switch w/Terminal Block
Series 8 Hermetically Sealed
Snap Switch
HEK ’ ’
HET ’ ’
N/A
PNEUMATIC SWITCH MECHANISM AND ENCLOSURE
Switch
Description
Maximum
Supply
Pressure
Series J
100 psig
(7 bar)
Bleed Type
60 psig
(4 bar)
Series k
Non-Bleed
100 psig
(7 bar)
Maximum
Process
Temperature
+400° F
(+204° C)
+400° F
(+204° C)
Bleed
Orifice
Diameter
NEMA 1
H31, H32
H51, H52
.063
(1.6 mm)
JKE
JKE
.094
(2.4 mm)
JLE
JLE
—
KOE
KPE
Œ Consult factory for temperatures up to +750° F (+399° C).
 Consult factory for TYPE 4X/7/9 cast iron housings.
Ž Uncontrolled housing heater or drain available in TYPE 4X/7/9 enclosures.
Consult factory for switch codes.
 Process temperature based on +100° F (+38° C) ambient
 HS switch not available on models H51 or H52.
‘ On condensing applications, temperature down-rated to +400° F (204° C)
process at +100° F (+38° C) ambient.
’ CSA approval does not apply to Series HE switches.
15
QUALITY
The quality assurance system in place at
Magnetrol guarantees the highest level of
quality throughout the company. Magnetrol
is committed to providing full customer
satisfaction both in quality products and
quality service.
The Magnetrol quality assurance system is
registered to ISO 9001 affirming its commitment to known international quality
standards providing the strongest assurance
of product/service quality available.
Several External Cage Switches are available
for quick shipment, usually within one week
after factory receipt of a complete purchase
order, through the Expedite Ship Plan (ESP).
ESP service may not apply to orders of ten units
or more. Contact your local representative for
lead times on larger volume orders, as well as
other products and options.
ESP
Expedite
Ship
Plan
To take advantage of ESP, match the color coded
model number codes in the selection charts
(standard dimensions apply).
WARRANTY
All Magnetrol mechanical level and flow controls are warranted free of defects in materials
or workmanship for five full years from the date
of original factory shipment.
If returned within the warranty period; and,
upon factory inspection of the control, the cause
of the claim is determined to be covered under
the warranty; then, Magnetrol will repair or
replace the control at no cost to the purchaser
(or owner) other than transportation.
Magnetrol shall not be liable for misapplication,
labor claims, direct or consequential damage or
expense arising from the installation or use of
equipment. There are no other warranties
expressed or implied, except special written
warranties covering some Magnetrol products.
5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com
145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306
Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93
Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317
Copyright © 2011 Magnetrol International, Incorporated. All rights reserved. Printed in the USA.
Performance specifications are effective with date of issue and are subject to change without notice.
Magnetrol & Magnetrol logotype are registered trademarks of Magnetrol International.
BULLETIN: 46-121.22
EFFECTIVE: August 2010
SUPERSEDES: July 2009