Discount Boilers and Boiler Spare Parts

Here you will find discount Boilers for sale and discount Boiler Spare Parts for sale. If you are looking for discount boiler spares then please look what is available.

To search for particular discount boiler spare parts then you can use the search bar at the top. Just type in the name of the discount boiler spare part eg thermostat, then click the search button.

A boiler is a closed vessel in which water or other fluid is heated under pressure. The steam or hot fluid is then circulated out of the boiler for use in various process or heating applications. A safety valve is required to prevent over pressurisation and possible explosion of a boiler.

Construction of boilers is mainly limited to copper, steel and cast iron. In Live steam toys, brass is often used. Most new systems are fitted with condensing boilers for greater efficiency

Sources of heat for the boiler can be the combustion of fuels such as wood, coal, oil or natural gas. Electric boilers use resistance or immersion type heating elements. Nuclear fission is also used as a heat source for generating steam. Waste-heat boilers, or HRSGs use the heat rejected from other processes such as gas turbines.

Boilers can also be classified into fire-tube or water-tube boilers depending on whether the heat source is inside or outside the tubes. The goal in both cases is to maximise the heat transfer between the water and the hot gases heating it. For example, steam locomotives have fire-tube boilers, where the fire is inside the tube and the water on the outside. These usually take the form of a set of straight tubes passing through the boiler through which hot gas flows.

In water-tube boilers the water flows through a large number of narrow tubes around the fire. The tubes frequently have a large number of bends and sometimes fins to maximise the surface area. This type of boiler is generally preferred in high pressure applications since the high pressure water/steam is contained within narrow pipes which can contain the pressure with a thinner wall.

There are other types of boiler, largely of historical interest. For example, the Cornish boiler developed around 1812 by Richard Trevithick for generating steam for steam engines. This was both stronger and more efficient than the simple boilers which preceded it.

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