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.

Chaffoteaux 60057703 Flexiflue Thermocouple

Part: 60057703

Price: £29.81
Vaillant 171165 Thermocompact Thermocouple

Part: 171165

Price: £10.81
Baxi 230677 Arena & Bermuda Thermocouple

Part: 230677

Price: £7.45
Potterton Thermocouple 242157BAX

Part: 242157BAX

Price: £13.39
Chaffoteaux 60035083 Corvec Thermocouple

Part: 60035083

Price: £23.60
Myson Apollo Thermocouple 102005

Part: 102005

Price: £8.95
Myson 402905 Housewarmer Thermocouple

Part: 402905

Price: £8.95
Vaillant 171125 Mag Sine Thermocouple

Part: 171125

Price: £16.81
Main Thermocouple 402S2460

Part: 402S2460

Price: £6.64
Main Thermocouple 786/9641

Part: 786/9641

Price: £7.85
Potterton 10/17461 Thermocouple

Part: 10/17461

Price: £10.75
Baxi 5110886 Main Multipoint Thermocouple

Part: 5110886

Price: £52.09
Ravenheat 5012076 Thermocouple

Part: 5012076

Price: £24.59
Potterton 5110886 Thermocouple

Part: 5110886

Price: £52.09
Chaffoteaux 60028297 Miniflame Thermocouple

Part: 60028297

Price: £40.37
Potterton Thermocouple 243215

Part: 243215

Price: £23.95
Main Mersey, Medway Thermocouple 10/13848

Part: 10/13848

Price: £10.75
Ideal 111880 Classic Thermocouple

Part: 111880

Price: £8.95
Baxi 225496BAX Solo Wm Rs Thermocouple

Part: 225496BAX

Price: £6.95
Baxi Q309A2788 Thermocouple

Part: Q309A2788

Price: £8.37
Ideal 003876 Mexico Thermocouple

Part: 003876

Price: £8.95
Ideal 002937 Concord Thermocouple

Part: 002937

Price: £12.95
Main Thermocouple Nut 092136

Part: 092136

Price: £6.35
Ideal 056249 Concord Thermocouple

Part: 056249

Price: £27.30
Chaffoteaux 60031243 Flexiflame Thermocouple

Part: 60031243

Price: £28.39
Main Thermocouple 402905

Part: 402905

Price: £8.95
Ideal 173228 Concord Lead For Thermocouple

Part: 173228

Price: £44.62
Potterton Thermocouple 786/9641

Part: 786/9641

Price: £7.85
Baxi 243215 Brazillia Thermocouple

Part: 243215

Price: £23.95
Glowworm S202445 Swiftflow Thermocouple

Part: S202445

Price: £10.95
Main Thermocouple 2500M120

Part: 2500M120

Price: £4.79
Saunier Duval S202445 Thermocouple

Part: S202445

Price: £10.95
Alpha 6.5625660 240 & 280 Thermocouple

Part: 6.5625660

Price: £11.00
Ideal 002700 Concord & Elan Thermocouple

Part: 002700

Price: £8.95
Main Thermocouple 0549509

Part: 0549509

Price: £11.18
Potterton Kingfisher Thermocouple 402905

Part: 402905

Price: £8.95
Worcester Bosch 87072020180 Thermocouple

Part: 87072020180

Price: £21.05
Ariston - Thermocouple - 60065964

Part: 60065964

Price: £21.84
Potterton Thermocouple 226262

Part: 226262

Price: £14.25
Potterton Thermocouple 243644

Part: 243644

Price: £10.45
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