This part is fitted to the older standard efficiency boilers that have a permanent pilot light, they work in a way by making a small electrical charge which activates an electromagnet to open a valve to allow gas or water to go through the system. they are an early way of detecting if there is a flame present. They are made from 2 dissimilar metals that when heated generates a small electrical current that is then sent down to the gas valve to hold in the pilot solenoid on the gas valve allowing the user to let go of the knob.

If the pilot light goes out for any reason the thermocouple cools down, the electrical current decreases allowing the pilot solenoid to drop out. Once the pilot solenoid has dropped out the gas to the burner is extinguished and the boiler is switched off for safety.

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Alpha 6.5625660 240 & 280 Thermocouple

Part: 6.5625660

Price: £11.00
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Alpha Ocean Thermocouple 6.5614721

Part: 6.5614721

Price: £16.98
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Valor 0549509 Homeflame, Uniflame Thermocouple

Part: 0549509

Price: £12.12
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Valor Thermocouple 0547319

Part: 0547319

Price: £13.26
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Baxi Q309A2788 Thermocouple

Part: Q309A2788

Price: £8.37
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Baxi 786/9641 Thermocouple

Part: 786/9641

Price: £7.85
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Baxi 402S2460 Thermocouple

Part: 402S2460

Price: £6.64
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Baxi 5110886 Main Multipoint Thermocouple

Part: 5110886

Price: £52.09
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Myson 402905 Housewarmer Thermocouple

Part: 402905

Price: £9.95
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Baxi 243215 Brazillia Thermocouple

Part: 243215

Price: £23.95
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Baxi 232159BAX Solo 2 Thermocouple

Part: 232159BAX

Price: £7.95
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Baxi 225496BAX Solo Wm Rs Thermocouple

Part: 225496BAX

Price: £9.45
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Baxi 230677 Arena & Bermuda Thermocouple

Part: 230677

Price: £7.45
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Baxi 226262 Ebony & Gasflame Thermocouple

Part: 226262

Price: £14.25
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Baxi 102005 Bermuda Thermocouple

Part: 102005

Price: £8.95
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Baxi 092136 Bermuda & Gasflame Thermocouple

Part: 092136

Price: £6.35
images/products/Potterton_Thermo_5123a7d5aab2d
Potterton Thermocouple 786/9641

Part: 786/9641

Price: £7.85
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Potterton Thermocouple 402S2460

Part: 402S2460

Price: £6.64
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Potterton Kingfisher Thermocouple 402905

Part: 402905

Price: £9.95
images/products/Potterton__Therm_507d2a3bafc1f
Potterton Thermocouple 2500M120

Part: 2500M120

Price: £4.79
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Potterton Thermocouple 243644

Part: 243644

Price: £10.45
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Potterton Thermocouple 243215

Part: 243215

Price: £23.95
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Potterton Thermocouple 230677

Part: 230677

Price: £7.45
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Potterton Thermocouple 226262

Part: 226262

Price: £14.25
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Potterton Thermocouple 225496BAX

Part: 225496BAX

Price: £9.45
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Thorn Apollo Thermocouple 102005

Part: 102005

Price: £8.95
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Potterton 10/17461 Thermocouple

Part: 10/17461

Price: £10.75
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Potterton Thermocouple 10/13848

Part: 10/13848

Price: £10.75
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Potterton Thermocouple Nut 092136

Part: 092136

Price: £6.35
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Potterton Thermocouple 0549509

Part: 0549509

Price: £12.12
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Potterton 5110886 Thermocouple

Part: 5110886

Price: £52.09
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Potterton Prima Thermocouple 402918

Part: 402918

Price: £8.95
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Potterton Flamingo & Kingfisher Thermocouple Q309A2788

Part: Q309A2788

Price: £8.37
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Saunier Duval Thermocouple S900001

Part: S900001

Price: £12.95
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Saunier Duval S202445 Thermocouple

Part: S202445

Price: £10.95
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Saunier Duval S202435 Thermocouple

Part: S202435

Price: £10.50
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Saunier Duval S202432 Thermocouple

Part: S202432

Price: £15.18
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Ravenheat 5012076 Thermocouple

Part: 5012076

Price: £26.30
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Chaffoteaux 60035083 Corvec Thermocouple

Part: 60035083

Price: £23.60
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Chaffoteaux 60031243 Flexiflame Thermocouple

Part: 60031243

Price: £28.39
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Chaffoteaux 60074432 Celt Star Thermocouple

Part: 60074432

Price: £32.09
images/products/Chaffoteaux_Ther_4e8ef5d6226be
Chaffoteaux 60057703 Flexiflue Thermocouple

Part: 60057703

Price: £15.20
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Chaffoteaux 60035087 Britony 2T Water Heater Thermocouple

Part: 60035087

Price: £11.00
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Chaffoteaux 60028297 Miniflame Thermocouple

Part: 60028297

Price: £40.37
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Ferroli 39801490 Optima 900 Thermocouple

Part: 39801490

Price: £21.64
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Ferroli 36702070 Optima Thermocouple

Part: 36702070

Price: £9.00
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Vokera 4961 Excell & Flowmatic Thermocouple

Part: 4961

Price: £9.52
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Ariston 60031243 Maxiflame Thermocouple

Part: 60031243

Price: £28.39
Chaffoteaux_Ther_4e8ef5d6226be
Ariston Thermocouple 60057703

Part: 60057703

Price: £15.20
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Ariston - Thermocouple - 60035087

Part: 60035087

Price: £18.61
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