Brochure

22-27
schneider-electric.us
Closed Tank, Type H Float Switches
Class 9037 / Refer to Catalog 9034CT9701
Type H Switches
Type H switches are attached to the tank by means of a 2-1/2 in. screw-in bushing. An external pointer indicates the float position within the tank
when the unit is mounted. Switches come complete with stainless steel float and rod. A Buna N Quad-Ring
®
seal is used between the float rod
and sealing connector. Normal application is at atmospheric pressure, but where higher pressures are encountered, the switch will withstand
tank pressures up to 50 psi at temperatures up to +220 °F. Occasional replacement of the Quad-Ring seal may be necessary.
Ambient temperature ratings: Min. -30 °C (-22 °F); Max. +105 °C (+220 °F)
Type HG35
Float on Right, 90° Offset Rod
File No. E12158 and
E12443 Haz Loc
File LR25490,
File LR26817 Haz Loc
Table 22.77: Class 9037 Type H Contacts Close On Liquid Rise
Float Position
(viewed from front
of switch, facing
indicator scale)
Float Rod
Angle
Approximate
Water Level
Change
(Field Adjustable)
NEMA 1 NEMA 4 NEMA 7 & 9
Min. (in.)
Max.
(in.)
Type Type Type
Right
45° 2 5 HG33 HW33 HR33
90° Offset 2
5 HG35 HW35 HR35
7 HG37 HW37 HR37
8-1/4 HG39 HW39 —
11-1/2 HG31 HW31 HR31
Left
45° 2 5 HG34 HW34 HR34
90° Offset 2
5 HG36 HW36 HR36
7 HG38 — HR38
8-1/4 HG30 HW30 HR30
11-1/2 HG32 HW32 HR32
NOTE: For replacement floats, see Class 9049 Type H on page 22-30. Types
shaded in gray are available with Form Z19; see Table 22.79 on page 22-27.
See Accessories and Renewal Parts on page 22-30.
Table 22.78: Type H Float Travel Distances
Float Rod Angle
R
in. (mm)
H [6]
in. (mm)
f1
in. (mm)
f2
in. (mm)
F
in. (mm)
Minimum Maximum Minimum Maximum Minimum Maximum
45° —
6.22 (158) 2.25 (57) 4.50 (114) 2.00 (52) 4.50 (110) 4.25 (108) 9.00 (229)
90° offset
3.00 (76) 4.25 (108) 2.75 (70) 4.25 (108) 2.25 (57) 4.25 (108) 5.00 (127) 7.50 (191)
4.25 (108) 5.50 (140) 3.50 (89) 5.50 (140) 2.75 (70) 4.00 (102) 6.25 (159) 9.50 (241)
5.00 (127) 6.25 (159) 3.75 (95) 6.25 (159) 3.00 (76) 4.50 (110) 6.75 (171) 10.75 (273)
7.00 (178) 8.25 (210) 4.75 (121) 8.25 (210) 3.75 (95) 5.75 (146) 8.50 (216) 14.00 (356)
Table 22.79: Available Modifications For Class 9037 Type H [7]
Description
Form
Omit 2-1/2" tank connecting bushing
F3
Omit float L
Reverse action, contacts open on rise
R
Viton
®
packing: 5 oz. float (diesel fuel) for Types shaded in gray in Table 22.77 above.
Z19
Viton packing (suitable for applications up to +250 °F)
Z20
#316 stainless steel float and Viton packing
Z21
Type HG—45° Angle Dimensions Type HG—90° Offset Dimensions Type HR/HW—45° Angle Dimensions Type HR/HW—90° Offset Dimensions
4.44
113
3.89
99
0.44
12
0.38
10
2.5
64
2.5
64
1.06
27
6.22
158
14.66
372
6.22
158
12.44
316
2.0
51
3.86
98
1.22
31
2.56
65
Pipe
Thread
Dia.
6.94
176
Extreme Float Position – See Price Sheet
Across
Flats
Bushing
5.98
152
2.88
73
0.44
11
0.38
10
11.5
292
2.58
65
2.5" NPT
2.0
51
3.86
98
16.06
408
7.13
184
Across
Flats
Bushing
H
R
C
L
f2
f1
F
C
L
C
L
4.78
121
1.44
37
3.38
86
0.44
12
0.38
10
5.5
140
0.5
13
2.5
64
1.06
27
6.22
158
15.09
383
2.5
64
6.22
158
12.44
316
2.0
51
4.81
122
3.63
92
1.81
46
Pipe
Thread
Dia.
6.94
176
Extreme Float Position – See Price Sheet
Across
Flats
Bushing
0.66
17
0.66
17
0.66
17
0.66
17
Conduit
Openings
Two(2)
6.22
158
0.44
11
0.38
10
3.63
92
11.5
292
7.13
184
2.5" NPT
2.58
65
2.0
51
16.94
430
Across Flats
Bushing
H
f2
f1
F
C
L
C
L
4.75
122
R
C
L
22
PRESSURE, VACUUM, AND FLOAT
SWITCHES
[6] Clearance from the centerline of the hub to the side of the tank.
[7] Some product configurations are not available—contact your Schneider Electric representative for details.
© 2016 Schneider Electric
All Rights Reserved
9/24/2016