Condition Sensing Switches and Controls

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Temperature, Mechanical

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Approximate Dimensions

Dimensions in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.

Remote Bulb and Capillary Type

Click to enlarge - 837-17-14-1
Open Type
Approximate shipping weight 2-1/2 lb (1.1 kg)
Type 1
Approximate shipping weight 3 lb (1.4 kg)


Click to enlarge - 837-17-14-2
Types 7 & 9 and 4 & 13 combined
Approximate shipping weight 9 lb (4.1 kg)
Type 4 & 13
Approximate shipping weight 3 lb (1.4 kg)


¬ Dimension is 8.5 in. for Cat. Nos. 837-A3 and 837-A4 controls.


Dimensions in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.

Direct Vertical Immersion Type

Click to enlarge - 837-17-15-1
Type 4 & 13
Approximate shipping weight 3 lb (1.4 kg)
Type 1
Approximate shipping weight 3 lb (1.4 kg)


Direct Horizontal Immersion Type

Click to enlarge - 837-17-15-2
Type 1
Approximate shipping weight 4 lb (1.8 kg)


Dimensions in inches (millimeters). Dimensions are not intended to be used for manufacturing purposes.

Thermostat Wells and Packing Glands

Click to enlarge - 837-17-16-1    Click to enlarge - 837-17-16-2    Click to enlarge - 837-17-16-3
Figure A    Figure B    Figure C

Note:Packing gland can be used to form a seal anywhere along length of capillary.

Cat. No. Figure A B C D E F
837-N1 A 4-5/8 (117.6) 23/32 (18.3) 3-29/32 (99.2) 17/32 (13.5) 7/8 (22.2) 1/2 NPT
837-N2 B 3-27/32 (97.6) 27/32 (21.4) 3 (76.2) 27/32 (21.4) 1-1/8 (28.6) 3/4 NPT
837-N3 A 5-13/32 (137.3) 1-1/2 (38.1) 3-29/32 (99.2) 17/32 (13.5) 7/8 (22.2) 1/2 NPT
837-N4 C 2-5/32 (54.8) 1-21/32 (42.1) 7/16 (11.1) 3/4 (19.1) 7/8 (22.2) 1/2 NPT
837-N5 C 2-5/32 (54.8) 1-21/32 (42.1) 7/16 (11.1) 3/4 (19.1) 7/8 (22.2) 1/2 NPT
837-N6 A 9-5/8 (244.5) 13/16 (20.6) 8-13/16 (223.8) 5/8 (15.9) 7/8 (22.2) 1/2 NPT
837-N7 A 10-5/32 (258) 1-1/2 (38.1) 8-13/16 (223.8) 5/8 (15.9) 7/8 (22.2) 1/2 NPT
837-N12 A 4-5/8 (117.6) 23/32 (18.3) 3-29/32 (99.2) 17/32 (13.5) 7/8 (22.2) 1/2 NPT
837-N13 A 9-5/8 (244.6) 13/16 (20.6) 8-13/16 (223.8) 5/8 (15.9) 7/8 (22.2) 1/2 NPT
837-N14 A 5-13/32 (137.3) 1-1/2 (38.1) 3-29/32 (99.2) 17/32 (13.5) 7/8 (22.2) 1/2 NPT
837-N15 A 10-5/16 (262) 1-1/2 (38.1) 8-13/16 (223.8) 5/8 (15.9) 7/8 (22.2) 1/2 NPT
837-N16 B 3-27/32 (97.6) 3 (76.2) 27/32 (21.4) 27/32 (21.4) 1-1/8 (28.6) 3/4 NPT