Low Pressure Boilers

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

Low pressure boilers are often box-like and constructed from stainless steel, aluminum, steel or cast iron. Inside the housing is a furnace to burn the fuel and an arrangement of pipes, valves and drums. The flue is the chimney that releases the steam into the system or atmosphere. Read Moreā€¦

Low Pressure Boilers Low pressure boilers are tanks or vessels that facilitate the transfer of heat from its source to water or steam at pressures below 15 PSI. Though high temperatures within an enclosed space result in increased pressure, these boilers are able to keep pressure at or below the atmospheric pressure of ~14.7 PSI.

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. Our systems feature large volumes of totally isolated positive circulation. Rest assured with our company and our 30 years of manufacturing experience! Contact us today!

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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; custom engineered systems; and a full range of ancillary equipment. We continue to make advancements in the boiler market and are committed to improving life through heat transfer solutions.

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Fulton $$$

Barberton, OH  |  330-753-4511

Babcock & Wilcox provides boilers ranging from small package boilers for commercial applications to large, high capacity utility boilers used to generate 1300 MW of electricity. We have the experience to burn virtually any fuel to produce steam efficiently, safely and reliably. Our products include drum boilers, fluidized bed boilers, once-through boilers, heaters and burners.

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Babcock & Wilcox $$$

Michigan City, IN  |  219-879-6561

Weil-McLain produces top-quality industrial and residential hot water boilers, steam boilers, gas fired boilers, oil fired boilers and electric boilers. We are the leading cast iron boiler manufacturer in the U.S. We offer them in five sizes from 80 to 310 MBH. Contact us with your needs.

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Weil-McLain $$$

Delanco, NJ  |  888-992-4134

Powerhouse Boiler Equipment sells, rents and services new & used boilers for all commercial and industrial needs. Our stock includes firetube, watertube, mobile and trailer-mounted boilers, available from 25 hp to 800 hp and 72,000 pph. Our boiler products can be delivered quickly across North and South America, and are used by business in a variety of industries.

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Powerhouse Boiler Equipment $$$
placeholder image Unilux Advanced Manufacturing, LLC Fulton Babcock & Wilcox Weil-McLain Powerhouse Boiler Equipment

Low pressure boilers are most frequently used for generating steam rather than for heating water. Because boilers do not control the pressure or flow of hot water into a shower head, for example, low pressure boilers would offer little difference from any other boiler like a combi boiler.

Low pressure boilers can range in size but generally do not require the large amount of space that high pressure boilers need. These boilers are typically used in industrial, commercial or manufacturing applications for jobs that require lower pressures, such as space heating. Residences, schools, offices and other average buildings generally do not rely on low or high pressure boilers for heating purposes.

There are two main ways boilers generate steam and hot water. Fire-tube boilers direct the heat produced from burning fuel such as wood, coal or natural gas through heat exchanging tubes that are immersed in water. Thermal energy is transferred from the tubes into the water; the steam is then collected or the water pumped out. Water-tube boilers have water that circulates inside tubes that are exposed to heat. Thermal energy from the tubes moves into the water, heating it and resulting in water vapor and hot water. Water-tube boilers are typically used in high pressure applications because they are capable of safely reaching 1,000 PSI.

Some facilities have both kinds, using water-tube boilers with high pressures for process loads while the low pressure fire-tube boilers are used for heating water and space heating. In fact, the two kinds can be combined in the same area. When high pressure or high temperature steam suddenly decreases in temperature, flash steam is formed and, if there is enough of a pressure difference, is used to supply steam to the low pressure boiler. Regardless of their power, all boilers have safety valves to keep the appliance from operating at dangerous levels.

Low Pressure Boilers Informational Video