Boiler / Gas Fire Parts
Boiler Parts

Air Pressure Switches
Air Pressure Switches for the most common boilers. An air pressure switch i..
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Auto Air Vents
Auto air vents are used in heating sytems to automatically release air in t..
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Clocks
Built in boiler clocks both digital and mechanical. Built in clocks are mou..
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Condensate Components
Condensate components used in condensing boilers..
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Control Knobs
Control Knobs for boilers and gas fires..
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Diaphragms
Diaphragms for diverter valves and hydraulics. Diaphragms are used in the h..
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Diverter Valves / Glands
A diverter valve is usually found in combi boilers. It allows for the water..
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Electrical Parts
Electrical parts used in boilers, ror example: transformers, coils, wiring ..
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Electrodes
Electrodes are used in boilers, gas fire and other gas appliance. There are..
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Expansion Vessels
An expansion vessel is a tank used in heating systems and in boilers. It's ..
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Fans
Most modern boilers incorporate a fan to expel the exhaust products of comb..
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Filling Loops
A filling loop is used to pressurise a sealed heating system. Some of the n..
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Flow Switches
A flow switch, also reffered to as a flow sensor or flow turbine is used to..
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Fuses
Fuses are safety devices used to protect against the flow of excessive curr..
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Gas Valves
Multifunctional gas valves for boilers and other gas appliances..
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Gauges - Tempertature / Pressure
Pressure and temperature gauges for measurement. Found in boilers and on ce..
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Heat Exchangers
Primary and secondary heat exchangers for gas boilers. Primary or main heat..
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Isolation Valves
Isolation Valves for boilers..
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Low Water Sensors
Low water pressure sensors / switches as the name suggests are used to tell..
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Piezo Ignitor/Spark Generator
Piezo Ignitors / spark generators are used to provide a very high voltage t..
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Printed Circuit Boards
Printed Circuit Boards or PCBs are the main control center of the boiler. I..
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Pumps
Pumps or circulators are used to pump the water around the central heating ..
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Repair Kits
Repair kits for diverter valves and hydraulic blocks in central heating boi..
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Safety Valves
Safety Valves or pressure relief valves for boilers and central heating sys..
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Thermisters
Thermisters are temperature sensors also known as NTC or PTC probes. They a..
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Thermocouples
Thermocouples for central heating boilers. A thermocouple is used to detect..
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Thermostats
Thermostats used in boilers to control the boiler or detect overheating. Co..
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Washers and Gaskets
We hold a range of the most popular fibre and rubber washers for most heati..
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Misc Spares
miscellaneous boiler parts..
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Tools & Consumables
Tools

Cutting Wheels
Pipe clice cutting wheels..
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Electrical
Electricians Tools..
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Hand Tools
Here we have a selcection of hand tools including screwdrivers, pliers,hamm..
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Nerrad Tools
Nerrad Tools..
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Packs
Tool packs..
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Pliers
Pliers and wrenches used plumbers..
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Plumbing
Plumbing Tools..
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Power Tool Accessories
Power tool accessories such as drill bits, screwdriver bits and jigsaw blad..
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Power Tools
Power Tools..
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Screwdrivers
Handy screwdrivers for the gas engineer. Stubby, long reach, flat,pozdrive ..
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Torches and Lamps
Led Torches and lamps to help you see the light...
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Tube Cutters
Copper and plastic tube cutters..
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Protection
Protection and safety products for plumbers and gas engineers..
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Electrical Testers
Electrical testers, multimeters and other testing equipment..
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Consumables

Aerosols
Aerosols used by gas engineers. Gas leak sprays, Air dusters..
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Lubricants
Lubricants such as silicone grease and gas cock grease..
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Report Pads
Report pads and labels used by gas engineers..
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Smoke Products
Smoke products such as smoke pellets and smoke matches..
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Heating & Plumbing

Filters
Central heating filters to protect your heating system and boiler component..
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Chemicals
Central heating chemicals to remove sludge and contaminants from your centr..
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Brassware
Brassware such as automaic bypass valves, pressure reducing valves, TRVs..
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Controls

Built in boiler clocks
Built in boiler clocks both digital and mechanical. Built in clocks are mou..
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External Timers / Programmers
External programmers and timers both digital and mechanical. External progr..
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Room Thermostats
Room thermostats for controlling the temperature in the house. Room thermos..
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Smoke / Co Alarms
Smoke alarms and carbon monoxide alarms for the protection of your property..
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Motorised Valves
Motorised valve for controlling the flow of water in central heating system..
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Manufacturer: Viessmann Product Code: VIEV8646

Viessmann Expansion Vessel 7828646

This part will fit the following appliances: Manufacturer Appliance Model Viessmann Vitodens 100 WB1B 26kW Combi - 7373061 Viessmann Vitodens 100 WB1B 26kW System - 7373060 Viessmann Vitodens 100 WB1B 30kW Combi - 73730..

£139.99

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