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Watlow Bulb & Capillary Thermostat Ordering
To order, select the thermostat below , then click the "submit" button.
The part number and price will be displayed on the last page.
1. Watlow Thermostat - Select the Heater Thermostat you need.

Code No. Desc. Temp. Range (F°) Bulb Dimensions
Capillary Length
 Cross Reference Price
#1 SPST 30-100° F 4-13/16" x 0.250" 18" 202-0-21-1 $92.00
#2 SPST 30-250° F 3-1/4" x 0.250" 18" 202-0-21-4 $92.00
#2A SPST 30-250° F 3-1/4" x 0.250" 84" 202-0-21-5 $106.00
#3 SPST 175-550° F 3-3/8" x 0.250" 18" 202-0-21-3 $98.00
#3A SPST 175-550° F 2-3/4" x 0.250" 84" 202-0-21-6 $112.00
#4 DPST 30-110° F 6-1/4" x 0.375" 36" 202-0-4-2 $224.00
#5A DPST 60-250° F 6-1/2" x 0.250" 48" 202-0-4-17 $224.00
#7A DPST 100-550° F 7-1/16" x 0.250" 48" 202-0-4-16 $224.00
#8 DPST 60-250° F 6-1/2" x 0.375" 48" 202-0-3-1 $377.00
#9 DPST 100-550° F 12" x 0.188" 48" 202-0-3-3 $383.00
#11 SPST 350° F 3-1/2" x 0.250" 36" 202-0-29-2 $120.00
#12A SPST 60-160° F 4-3/8" x 0.250" 20" 202-0-41-2 $101.00

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