The Boilers ClipArt gallery offers 42 examples of large boilers used in various industrial processes.

Babcock and Wilcox Water-tube Boiler, longitudinal section

Babcock and Wilcox Water-tube Boiler

Babcock and Wilcox Water-tube Boiler, longitudinal section

Babcock and Wilcox Water-tube Boiler, section at AB-front elevation

Babcock and Wilcox Water-tube Boiler

Babcock and Wilcox Water-tube Boiler, section at AB-front elevation

Belleville Boiler

Belleville Boiler

Belleville Boiler

A galloway boiler, section beyond the bridge.

Boiler

A galloway boiler, section beyond the bridge.

A lancashire boiler

Boiler

A lancashire boiler

A simple vertical boiler

Boiler

A simple vertical boiler

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A vertical boiler with internal combustion chamber

Boiler

A vertical boiler with internal combustion chamber

A siimple ended marined boiler

Boiler

A siimple ended marined boiler

A siimple ended marined boiler

Boiler

A siimple ended marined boiler

A double ended marine boiler

Boiler

A double ended marine boiler

A normand boiler

Boiler

A normand boiler

A normand boiler

Boiler

A normand boiler

A Thornycroft-Shulz water-tube boiler

Boiler

A Thornycroft-Shulz water-tube boiler

A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits the boiler for use in various processes or heating applications. The pressure vessel in a boiler is usually made of steel.

Closed Vessel Boiler

A boiler is a closed vessel in which water or other fluid is heated. The heated or vaporized fluid exits…

The improved cornish or trentham boiler is a powerful boiler for heating great lengths of piping. It has two wrought iron cylinders.

Improved Cornish or Trentham Boiler

The improved cornish or trentham boiler is a powerful boiler for heating great lengths of piping. It…

The cruciform saddle boiler is a modification of a saddle boiler. It combines great heating power with economy of fuel.

Cruciform Saddle Boiler

The cruciform saddle boiler is a modification of a saddle boiler. It combines great heating power with…

"The Duplex is made in two equal parts, each being capable of being worked alone. Each section consists of a semicircle of upright tubes forming the boiler proper, fitted with the diaphragm a, horizontal pipes forming the furnace f, a flow pipe b and a return pipe c, and an outlet d for removing sedimentary deposits from the interior." — Encyclopedia Britannica, 1893

Duplex Tubular Boiler

"The Duplex is made in two equal parts, each being capable of being worked alone. Each section consists…

This design with natural induction used for marine purposes was the popular “Scotch” marine boiler, a scheme for a multi-tube one-pass horizontal boiler made up of two units: a firebox surrounded by water spaces and a boiler barrel consisting of two telescopic rings inside which were mounted 25 copper tubes; the tube bundle occupied much of the water space in the barrel and vastly improved heat transfer.

Steam Boiler Engine

This design with natural induction used for marine purposes was the popular “Scotch” marine boiler,…

The Flue and Terminal End Saddle is a wrought, welded boiler. These boilers are made in sizes varying in length from two to five feet.

Flue and Terminal End Saddle Boiler

The Flue and Terminal End Saddle is a wrought, welded boiler. These boilers are made in sizes varying…

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has a dome or arch a, and back water-way b; the heated products of combustion striking against this back are sent up the central flue c, and then diverted into the side flues d, d, before passing into the chimney shaft e." — Encyclopedia Britannica, 1893

Gold Medal Boiler

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has…

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has a dome or arch a, and back water-way b; the heated products of combustion striking against this back are sent up the central flue c, and then diverted into the side flues d, d, before passing into the chimney shaft e." — Encyclopedia Britannica, 1893

Gold Medal Boiler

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has…

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has a dome or arch a, and back water-way b; the heated products of combustion striking against this back are sent up the central flue c, and then diverted into the side flues d, d, before passing into the chimney shaft e." — Encyclopedia Britannica, 1893

Gold Medal Boiler

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has…

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has a dome or arch a, and back water-way b; the heated products of combustion striking against this back are sent up the central flue c, and then diverted into the side flues d, d, before passing into the chimney shaft e." — Encyclopedia Britannica, 1893

Gold Medal Boiler

"The Gold Medal Boiler is perhaps one of the best of these modified saddles, and like the others has…

The gold medal boiler is made of wrought iron. This boiler is virtually a flued saddle with a terminal end, the flue being in the form of three chambers instead of one.

Gold Medal Boiler

The gold medal boiler is made of wrought iron. This boiler is virtually a flued saddle with a terminal…

"A horizontal tubular, which is found to be extremely powerful as well as economical. It is a rectangular box 6 feet long, made of 2-inch iron pipes, fixed into hollow water spaces which form the ends; these pipes act as fire bars, and form the sides of the furnace. above the fire there are three series of horizontal pipes, each covered by a layer of tiles so placed as to convert the two intervening spaces into flues, along which the flames and smoke travel for 18 feet, the smoke escaping at the far end by an opening in the upper layer of tiles." — Encyclopedia Britannica, 1893

Ladds's Boiler

"A horizontal tubular, which is found to be extremely powerful as well as economical. It is a rectangular…

"The saddle boiler is a very efficient form, steady and sure in its working. in its improved forms it is, perhaps, the best for general purposes. It should be set over a furnace, the sides and end of which should be of fire-brick. It may be quite plain, or with the inner surface ribbed or corrugated, a modification adopted by Mr. Gray of Chelsea." — Encyclopedia Britannica, 1893

Saddle Boiler

"The saddle boiler is a very efficient form, steady and sure in its working. in its improved forms it…

"The saddle boiler is a very efficient form, steady and sure in its working. in its improved forms it is, perhaps, the best for general purposes. It should be set over a furnace, the sides and end of which should be of fire-brick. It may be quite plain, or with the inner surface ribbed or corrugated." — Encyclopedia Britannica, 1893

Saddle Boiler

"The saddle boiler is a very efficient form, steady and sure in its working. in its improved forms it…

"The fire is made under the principal arch a; the flame and smoke return through the flue b, and then turn back over the top of the boiler to the outlet c, which can be placed at whatever point is in each case most convenient. The other parts referred to are d, flow pipe; e, return pipes, f, soot-door for cleaning flues, g, furnace door." — Encyclopedia Britannica, 1893

Saddle Boiler

"The fire is made under the principal arch a; the flame and smoke return through the flue b, and then…

A vessel in which water is turned into steam by the process of boiling.

Boiler, Steam

A vessel in which water is turned into steam by the process of boiling.

A steam generator is the term used to describe a type of boiler used to produce steam for climate control and potable water heating in railroad passenger cars. The output of a railroad steam generator is low pressure, saturated steam that is passed through a system of pipes and conduits.

Steam Generator

A steam generator is the term used to describe a type of boiler used to produce steam for climate control…

This is a vaporizing apparatus with an attached boiler. A steam generator is a device used to boil water to create steam.

Boiler Combination Steam Generator

This is a vaporizing apparatus with an attached boiler. A steam generator is a device used to boil water…

"A very powerful and economical one, for large establishments especially. It is a modification of the well-known Cornish boiler, and consists of two wrought-iron cylinders substantially rivetted together, and having a water space of about 2 inches between them. The frame for the furnace doors d is attached to the front. It is supported by two cast-iron chairs a, a, the front chair forming the frame for the lower flue doors b, which fasten by a simple catch, and can readily be lifted off for cleaning the flues. The plug c, opened by unscrewing it, is for the purpose of clearing out all interior accumulation of dirt, which should be done thoroughly at short intervals. The flow pipe is at e, the return at f." — Encyclopedia Britannica, 1893

Trentham Boiler

"A very powerful and economical one, for large establishments especially. It is a modification of the…

This illustration shows a vacuum boiler in which liquid to become glue is boiled by steam, as well as a man testing the liquid in the manufacturing process.

Vacuum Boiler, Testing the Liquid (Glue)

This illustration shows a vacuum boiler in which liquid to become glue is boiled by steam, as well as…

In 1838, Nasmyth, of England, planned his really great invention — the steam-hammer. His idea was to use the piston-rod of an upright steam-engine as the handle of a hammer that could move up and down between vertical guides. So perfect is the operation of one of these Titan hammers that the engineer can crack an egg with it, or deliver terrific, smashing blows that will mold a ton of iron into any shape he wishes.

Vertical Steam Hammer

In 1838, Nasmyth, of England, planned his really great invention — the steam-hammer. His idea…

Machine for printing wall paper.

Wallpaper Printing Machine

Machine for printing wall paper.

Babcock and Wilcox water-tube boiler fitted with superheaters

Water-tube Boiler

Babcock and Wilcox water-tube boiler fitted with superheaters

Stirling Water-tube boiler

Water-tube Boiler

Stirling Water-tube boiler

Woodeson Boiler

Woodeson Boiler

Woodeson Boiler

Yarrow Water-tube Boiler

Yarrow Water-tube Boiler

Yarrow Water-tube Boiler