Founded in 2002, Solar Manufacturing is a privately held U.S. company in Sellersville that designs, builds and services vacuum heat-treating furnaces and replacement hot zones. Its systems range from laboratory equipment to 50-ton car-bottom furnaces, while its engineers and metallurgists also support demanding aerospace, medical and industrial applications. The company works closely with affiliate Solar Atmospheres, drawing on that commercial heat treater’s operating experience to refine furnace designs, controls and energy-saving hot zones.
AMS 2750 compliant
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NFPA Standards
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Solar AtmospheresSolar Atmospheres is a family-owned commercial heat-treating company that provides vacuum heat treating and brazing, with more than 90 furnaces across seven U.S. facilities. Founded in 1984, it operates the world’s largest commercial vacuum furnace, capable of processing loads up to 48 feet long and 150,000 pounds. Its aerospace-focused work is supported by on-site metallurgical laboratories and ISO 9001, AS9100, and Nadcap accreditations.332811SOUDERTON, PA
Signature Vacuum Systems, IncFounded in 2002, employee-owned Signature Vacuum Systems is an Adamsville, Pennsylvania manufacturer known for tailoring industrial equipment to difficult thermal-processing requirements. Its engineers design custom vacuum furnace systems for manufacturers in the metals and ceramics industries, drawing on more than 100 years of combined heat-treating equipment experience.ADAMSVILLE, PA
L&L Special FurnaceBased just south of Philadelphia, L&L Special Furnace designs and builds industrial furnaces, ovens, kilns, quench tanks and complete heat-treating systems for industrial and laboratory use. The company keeps its engineering and manufacturing in-house at one location, then supports equipment worldwide with startup, repair and parts service. Its longstanding product line spans standard equipment and specially configured systems for demanding thermal applications.ASTON, PA
Surface Combustion, IncSince pioneering a patented heating concept in 1915, Maumee-based Surface Combustion has manufactured industrial heat-treat and thermal-processing furnaces, including its Allcase® batch integral quench system introduced in the early 1950s. The company pairs new standard and custom equipment with in-house controls, metallurgical testing, and engineering support for demanding applications such as aerospace and castings. Its long-running aftermarket operation also maintains historical drawings and bills of materials for nearly every furnace it has built, supporting repairs, rebuilds, and retrofits throughout the equipment’s service life.MAUMEE, OH