Closed Tank, Type H

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

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
	Float Rod Angle	Min. (in.)	Max. (in.)	Catalog No.	Catalog No.	Catalog No.
Right	45°	2	5	9037HG33	9037HW33	9037HR33
	90° Offset	2	5	9037HG35	9037HW35	9037HR35
			7	9037HG37	9037HW37	9037HR37
			8-1/4	9037HG39	9037HW39	—
			11-1/2	9037HG31	9037HW31	9037HR31
Left	45°	2	5	9037HG34	9037HW34	9037HR34
	90° Offset	2	5	9037HG36	9037HW36	9037HR36
			7	9037HG38	—	9037HR38
			8-1/4	9037HG30	9037HW30	9037HR30
			11-1/2	9037HG32	9037HW32	9037HR32
note For replacement floats, see Class 9049 Type H on Accessories for Float Switches. Types shaded in gray are available with Form Z19; see Available Modifications For Class 9037 Type H on Available Modifications For Class 9037 Type H. See Accessories and Renewal Parts on Accessories for Float Switches.

Type H Float Travel Distances

Float Rod Angle	R in. (mm)	H ^[1] in. (mm)	f1 in. (mm)		f2 in. (mm)		F in. (mm)
Float Rod Angle	R in. (mm)	H ^[1] 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)

Available Modifications For Class 9037 Type H ^[2]

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 Class 9037 Type H Contacts Close On Liquid Rise 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

Section 22: Pressure, Vacuum, and Float Switches

Section 22: Pressure, Vacuum, and Float Switches

Class 9037 / Refer to Catalog 9034CT9701

Type H Switches

Class 9037 Type H Contacts Close On Liquid Rise

note

Type H Float Travel Distances

Available Modifications For Class 9037 Type H ^[2]

Footnotes

Section 22: Pressure, Vacuum, and Float Switches

Section 22: Pressure, Vacuum, and Float Switches

Closed Tank, Type H

Class 9037 / Refer to Catalog 9034CT9701

Type H Switches

Class 9037 Type H Contacts Close On Liquid Rise

note

Type H Float Travel Distances

Available Modifications For Class 9037 Type H [2]

Footnotes

Available Modifications For Class 9037 Type H ^[2]