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| High Limit Switches |
* Picture above does not necessarily depicts the actual product. |
High Limit Switches 
A High Temperature Limit Switch is used on hot water pressure washers to prevent excessive water temperature. The switch is a bi-metallic, non-adjustable thermostat. When the bi-metallic sensor expands and bends, it breaks an electrical circuit when the water reaches a pre-set temperature. When the switch cools, the metal contracts and the circuit is again completed.
The sensor consists of two strips of metal bonded together. The strips expand at different rates when the temperature increases. The differing expansion rate of the two metals allows the sensor to bend. Normally the bi-metallic sensor will touch another contact. The control circuit runs through this connection. As the temperature rises, the bi-metallic sensor bends away from the contact and the circuit is broken, cutting power to the fuel solenoid.
NOTE: The thermostat will not reset until all areas surrounding the part cool down. This may result in a temperature drop of up to 50° before the thermostat resets and starts the burner.
(Shipping charge of $7.95 will apply on this item if the total order is less than $59.00)
| MODEL |
DESCRIPTION |
TEMPERATURE |
PROBE |
PRICE |
| BN-3914 |
3/8" MPT High Limit Switch |
176° F |
Silver |
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| BN-1444 |
3/8" MPT High Limit Switch |
230° F |
Yellow |
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| BN-4533 |
3/8" MPT High Limit Switch |
320° F |
Red |
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| BN-3915 |
1/2" MPT High Limit Switch |
176° F |
Silver |
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| BN-3665 |
1/2" MPT High Limit Switch |
203° F |
Blue |
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| BN-1440 |
1/2" MPT High Limit Switch |
230° F |
Yellow |
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| BN-1441 |
1/2" MPT High Limit Switch |
320° F |
Red |
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| Adjustable Thermostats |
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Adjustable Thermostat
With panel mount controls.
- 4000 PSI
- 302° F
- 3 1/2" immersion bulb w/60° capillary tube
- Accuracy ± 2.5%
- Temperature change response within ± 6° F
- 16 Amps - 250 volt
- Large easy read dial
- Seal, nut & 1/2" transition coupling included
(Shipping charge of $7.95 will apply on this item if the total order is less than $59.00)
MODEL |
DESCRIPTION |
PRICE |
SM-8.904-556.0 |
0 -194°F Thermostat |
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SM-8.712-497.0 |
0-248°F Thermostat |
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SM-8.904-557.0 |
0-302°F Thermostat |
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Adjustable Flow Thru Thermostat
- Stainless Steel Case
- Silver Contacts
- Ceramic Insulation
- Stop Collar
- Tension Adjusting Screw
- 3000 PSI
- 10 Amps - 110 Volts
- 5 Amps - 220 Volts
- Adjustable 85° - 95°
- 1/2" inlet, 3/8" outlet
MODEL |
DESCRIPTION |
PRICE |
SM-8.904-555.0 |
Thermostat |
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SM-8.700-501.0 |
Switch Only |
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In Line controls for Pressure Washers and Steamers
- Positive bimetal temperature control
- 1/2" inlet/outlet FPT ports
- 2000 PSI max working pressure
- Universal 1/4" spade terminal connection
MODEL |
DESCRIPTION |
PRICE |
SM-8.712-492.0 |
60-250°F |
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SM-8.712-493.0 |
60-350°F |
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