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High Pressure Boilers

A reliable source for Industrial Boiler information and leading Industrial Boiler Companies & Manufacturers.

High temperatures in a sealed volume results in high pressure, which can be used to maximize efficiency and power. High pressure boilers have historically been misunderstood and were therefore considered dangerous; there are multiple recorded instances of exploding industrial steam engines or locomotives resulting in death and injury. Read More…

High Pressure Boilers High pressure boilers are tanks or vessels that facilitate the transfer of heat from its source to water or steam while maintaining a high internal pressure.
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Leading Manufacturers

Schenectady, NY  |  518-344-7490

We strive for the best at Unilux Advanced Manufacturing LLC. Our boilers are designed with superior materials. We are proud to say that we produced the world's first UL/FE boiler and our units provide the highest levels of safety and accountability.

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Unilux Advanced Manufacturing, LLC $$$

Pulaski, NY  |  315-298-5121

As the inventor of the vertical tubeless boiler, Fulton has a reputation for success dating back to 1949. We`re a global manufacturer of steam, hot water and hydronic boilers, thermal fluid heaters, and custom engineered systems.

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Fulton $$$

Fremont, CA  |  800-227-1966

Nationwide Boiler is a leading supplier of new and reconditioned boilers for industrial facilities worldwide. We’re a manufacturer’s representative and stocking distributor for B&W package watertube boilers and Superior package firetube boilers, and we have fully reconditioned boilers in a variety of types and sizes. With sales, service and equipment depots throughout the U.S., we strive to provide our customers with reliable equipment and superior service. Call today to learn more!

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Nationwide Boiler Inc. $$$

Brampton, ON  |  905-454-1331

At ProTherm, we provide complete turnkey installation, start-up, and testing of our water heating systems whether they are conventional or high-efficiency. We have experience providing water heating systems for a variety of industries. We believe that we only succeed when our customers succeed. That's why you won't find customer service like ours anywhere else.

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ProTherm Ltd. $$$

Danville, KY  |  859-535-9908

Founded in 1931, Sellers pioneered gas-fired equipment such as boilers, burners, water heating equipment and bakery equipment. We will continue to be an industry leader in boiler and burner development. Whether it is in the area of improved efficiency or cleaner emissions, we will meet these challenges with innovative technology without sacrificing the simplicity, dependability and longevity.

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Sellers Manufacturing Company $$$

Ferrysburg, MI  |  616-842-5050

Johnston Boiler Co has been manufacturing, designing, engineering and servicing gas, oil, coal, wood, solid waste, biomass & hybrid fuel-fired steam & hot water boilers since our inception. With installations across all industries worldwide, We are recognized for the highest code standards, innovative engineering and design, Energy Star rating, fully Integrated controls, and renewable, sustainable solutions for green building design and operational efficiency. Call us today for more information.

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Johnston Boiler Co. $$$
placeholder image Unilux Advanced Manufacturing, LLC Fulton Nationwide Boiler Inc. ProTherm Ltd. Sellers Manufacturing Company Johnston Boiler Co.

Technically, high pressure boilers are those that operate at pressures greater than 15 pounds per square inch (PSI) when special construction techniques are required. The usual industrial range is from around 250 PSI to up to 1,000 PSI. Like conventional boilers, high pressure boilers are made from steel, aluminum or cast iron. They are rectangular in shape with the components housed inside a box-like casing. Because of the massive output of steam or water, high pressure boilers are often quite large and can be multiple stories tall. They have a large footprint and occupy many square feet of space.

Three Unilux High Pressure Steam Boilers High Pressure Steam Boilers - Unilux Advanced Manufacturing, LLC

High pressure boilers are used in industrial, commercial, or manufacturing applications for central heating systems, autoclaves, hot water supply and other important factory or plant processes. Residences or average buildings do not require high pressure performance from their boilers nor could they fit high pressure boilers.

Conventional boilers use either fire-tubes or water-tubes to generate heat. To produce hot water or steam, a fuel such as coal or natural gas is burned inside the furnace and heats the water-filled steam generator tubes that line the inside of the boiler. The greater the difference between the temperature of the rising steam and the temperature of the steam when it leaves the boiler, the higher efficiency will be achieved. High pressure boilers use water-tubes because a normal fire-tube could not produce high enough temperatures or pressures even if it was bigger, stronger and fed more fuel. Though the external walls are stronger, the heat exchangers used in water-tube boilers have small diameters that allow more water to be heated quickly due to the ratio of surface area and volume.

Fire-tube boilers would have to increase the size and thickness of all components in order to withstand the pressure that hinders the heat exchange and transfer. Thicker walls and bigger tubes designed to increase the pressure would in fact inhibit it because the system would not be able to achieve high temperatures or complete heating. High pressure boilers always are equipped with multiple safety valves and gauges in order to prevent dangerous pressure levels.

High Pressure Boilers Informational Video