Company History

For 100 years, Watlow has grown in product capability, market experience and global reach. The company holds more than 1000 patents and employs 4200 employees working in nine manufacturing facilities and 5 technology centers in the United States, Mexico, Europe and Asia. Watlow also has sales coverage in 178 countries around the world. The company continues to grow, while the commitment remains the same - to provide customers with superior products and services for their individual needs. 


  • 1922 - Louis Desloge Sr. founds Watlow in St. Louis, Missouri to manufacture electric heating elements for the shoe industry. 之所以选择 Watlow 作为公司名称,其寓意是要用“低功率”(low-watt) 加热器来代替蒸汽加热。Watlow 在一家机械加工厂二楼租用的角落里生产出了第一批加热器。
  • 1923 - Watlow pioneers the use of electric heat in brick presses with strip heaters and standard cartridge heaters, replacing the more costly steam process.
  • 1924 - Watlow builds its first factory. 公司以 Queen Quality 为商标推出了消费产品系列,包括电熨斗和加热垫。
  • 1925 - Watlow improves the process of shaping the popular harvest hat by replacing gas heat - both hard to control and confine - with special electric heating units designed to fit the shape of the dies.


  • 1931 - Watlow introduces electric immersion heaters replacing cumbersome steam pipes and fire-hazardous gas.


  • 1945 - Watlow begins selling products outside the United States.
  • 1948 - George Desloge, Louis's son, joins Watlow. George 拥有航空工程学位。


  • 1950 - George Desloge invents the narrow band cylindrical heater with its patented clamping strap for use in plastics processing.
  • 1951 - Watlow expands into a larger manufacturing facility, which is more than 15,000 square feet.
  • 1954 - George Desloge invents, and later patents, the FIREROD cartridge heater, improving heat transfer efficiency in shoe manufacturing.
  • 1958 - Watlow opens a facility in California and begins manufacturing silicone rubber heaters to service the aerospace industry. Watlow 的 FIREROD 棒状加热器获得专利。

1960 年代

  • 1961 - Watlow builds a new 30,000 square foot facility on a 28-acre tract in St. Louis County, Missouri.
  • 1963 - Louis Desloge Jr., Louis's son, joins Watlow and proceeds to build an international network of direct sales engineers and distributors.
  • 1965 - George Desloge becomes president and Louis Desloge Jr. vice president of Watlow.
  • 1967 - Watlow designs and manufactures the first high watt density cartridge pressurized heater for use in nuclear power plants.
  • 1969 - Watlow expands its headquarters and St. Louis, Missouri, manufacturing location to 95,000 square feet.


  • 1970 - Watlow's radiant heater line, RAYMAX, is introduced.
  • 1972 - Watlow opens a manufacturing facility in Hannibal, Missouri, to produce tubular heaters.
  • 1973 - Watlow opens its first manufacturing facility outside of the U.S., in Germany, to produce metric diameter cartridge heaters.
  • 1974 - Watlow introduces its thermocouple product line for the plastics industry.
  • 1976 - Watlow purchases Waynco, Inc. of Winona, Minnesota, a manufacturer of electronic controllers. Watlow 收购了棒状加热器恒温器制造商 Scaico Controls。
  • 1977 - Watlow purchases Aten Limited and begins producing ceramic fiber heaters.
  • 1978 - Watlow acquires Magne-Cast, an aluminum mold foundry in Batavia, Illinois. Watlow 能够自主设计和制造完整的铸铝加热器。
  • 1979 - Watlow opens a new facility in Columbia, Missouri, to manufacture flexible and ceramic fiber heaters. Watlow 开始在西德维纳生产公制 FIREROD 棒状加热器。


  • 1981 - Watlow purchases Adlake's mercury displacement relay division, which adds power switching ability. Watlow expands its St. Louis, Missouri, manufacturing facility to over 185,000 square feet.
  • 1982 - The patented Lead Adapter (LA) manufacturing process allows same-day shipment on more than 150,000 configurations of stock FIREROD cartridge heaters and lead combinations.
  • 1983 - Watlow begins Pacific Heater Company in Pacific, Missouri, a manufacturer of cartridge heaters. Watlow 推出了高性能矿物绝缘加热圈和带状加热器产品线。
  • 1984 - Watlow doubles the size of its Winona, Minnesota, facility.
  • 1985 - Watlow acquires the Claud S. Gordon Company of Richmond, Illinois (founded 1914), the nation's leading manufacturer of temperature measurement devices. Watlow Gordon 公司推出了多点温度传感器。
  • 1986 - Watlow purchases IR-ONICS in Providence, Rhode Island, adding infrared temperature measurement capabilities. Watlow 在意大利的米兰成立了销售办事处。Watlow 生产出其第一款基于微处理器的温度控制器。
  • 1987 - Watlow opens a new sales office in Nottingham, England. Watlow 扩建了其在西德克罗瑙的工厂。
  • 1988 - Watlow opens a new sales office in France. Watlow 推出了获得专利的 FIREBAR 扁平管式加热器,可提高餐馆炸锅的油炸效率。Watlow opens a new 170,000 square foot facility in Hannibal, Missouri, for manufacturing tubular heaters and assemblies.
  • 1989 - Watlow purchases Loyola of Orange, California, an original developer of silicone controlled rectifier (SCR) control technology. Watlow 收购了其最大的英国分销商并具备了在英国生产的能力。在台湾高雄设立了新的销售办事处。Watlow 将其铸铝作业转移到更大的工厂中。在爱荷华州迪科拉开设了一家新的红外线温度传感器厂。


  • 1990 - Watlow opens a new facility in Troy, Missouri, dedicated to process system design and fabrication.  Watlow opens a new sales office in Seoul, South Korea. Watlow introduces the SERIES 945, a microprocessor-based controller.
  • 1991 - Gary Neal becomes president of Watlow. George Desloge 成为董事会主席,Louis Desloge Jr. 成为副主席。Watlow 收购了加利福尼亚州 Anaheim 的 AOV Industries,开始生产 MULTICELL 高温加热器。Watlow 在新加坡开设了销售办事处和生产厂。Watlow 将其在密苏里州哥伦比亚的工厂扩大了一倍。
  • 1992 - Watlow launches the new SERIES 92 limit/temperature controller and the SERIES 733 menu-driven cooking computer for the foodservice industry.
  • 1993 - Watlow introduces the SERIES 988 process controller and the new DIN-A-MITE power controller. FIREROD MI 耐高温和耐污染引线配置获得专利。Watlow 获得 NSF 批准的新款电阻式温度计 (RTD) 穿肉探针的额定温度可达 500°F (260°C)。
  • 1994 - Watlow dedicates a new facility to research and development in Fenton, Missouri. Watlow 在墨西哥克雷塔罗设立了销售办事处。Watlow's launches the new XACTEMP surface probe and the new SERIES 935 controller. Watlow 在伊利诺伊州巴特维亚的工厂通过了 ISO:9001 认证。推出了紧凑型、低成本的 IR Junior 红外线温度传感器。
  • 1995 - Watlow becomes a majority investor in Anafaze of Watsonville, California, a designer and manufacturer of multi-loop controllers and PC-based control operating software. Watlow 上海成立,是一家服务于中国大陆市场的合资企业。Watlow 在密苏里州蒙哥马利市成立了 Alliance Heaters Company,生产容量更高的管式加热器和组件。
  • 1996 - MINICHEF 2000, a foodservice industry controller, and the new MICRODIN DIN rail mount controller are introduced. Watlow 在墨西哥的工厂开始生产 FIREROD 棒状加热器。
  • 1997 - Watlow celebrates its 75th anniversary. 据 Venture Development Corporation 发布的全球工业温度控制器市场报告,Watlow 在北美的多回路和单回路模拟温度控制器供应商中名列首选。Watlow 推出用于半导体加工的泵管路加热器。Watlow 在日本开设了新的销售办事处。
  • 1998 - Watlow introduces FREEFLEX miniature heated tubing and the PPC-2000, a programmable process controller. Watlow 还对多种基材推出了厚膜加热技术。Watlow 收购了宾夕法尼亚州达拉斯的 Energy Converters, Inc. (Encon) 并成立了 Watlow Polymer Technologies, Inc.。
  • 1999 - Peter T. Desloge becomes chairman of the board and George B. Desloge becomes co-chairman of the Board. Watlow 推出了 MULTICOIL 加热器,这是第一款将多电阻线圈和热电偶与三相功能结合在一起的管式加热器。厚膜技术已扩展到包括用于腐蚀性化学品加热的直线石英管。Watlow 为半导体行业推出了高纯度铝底座加热器。Watlow 在澳大利亚开设了新的销售办事处。


  • 2000 - Watlow Polymer Technologies introduces its patented THERMOPOLYMER heaters to provide unique heated parts. Watlow 被南伊利诺伊大学艾德华兹维尔分校授予密西西比河谷年度家族企业密苏里州大型企业类别奖。Watlow 的制造、销售和研发 (R&D) 业务已扩展到新加坡。
  • 2001 - Watlow moves to a new 20,000 square foot silicone rubber heater manufacturing facility in Anaheim, California. Watlow 董事会董事任命 Peter Desloge 担任 Watlow 的首席执行官 (CEO)。
  • 2002 - Watlow Process Systems moves to a new 50,000 square foot facility. Watlow 在密苏里州芬顿成立了新的工程服务部门 Single Iteration。Watlow Engineering 被 Start Magazine 授予“技术与商业愿景”奖。
  • 2003 - Watlow opens Watlow Iberica S.L., a new sales office in Madrid, Spain.
  • 2004 - Watlow launches a smart sensing capability product line.
  • 2005 - Watlow acquires Austrian-Based RHV Heizsysteme GmbH,for facilitating thermal spray technology.
  • 2006 - Watlow introduces integrated controller technology with the new line of EZ-ZONEcontrollers. Watlow 在中国上海开设了一家新生产厂。Watlow 开发并推出了先进的 ULTRAMIC 陶瓷加热器技术。Watlow 开始在整个公司实行精益制造。
  • 2007 - Watlow opens a new Asia Application and Design Center in Singapore. Watlow 在加利福尼亚州的洛思加图斯开设了一家半导体技术设计中心。
  • 2008 - Watlow names Tom Lamantia as president.
  • 2009 - Watlow receives Caterpillar Inc. 的供应商质量卓越过程认证。


  • 2010 - Watlow introduces its EXACTSENSE  thermocouple for high-temperature exhaust gas temperature sensing.
  • 2011 - Watlow's Singapore facility receives ISO9001:2008 certification for compliant quality management systems. Watlow 荣获由 MEDRAD 颁发的最高质量奖和“总裁奖”。
  • 2012 - Watlow opens a new sales office in India.
  • 2012 - Watlow acquires Semiconductor Tooling Services, Inc. (STS),其在离子注入翻新、弹性体键合和高精度清洁技术方面处于领先地位。
  • 2013 - Watlow Introduces the HYDROSAFE compact indirect heat exchanger
  • 2014 - Watlow introduces fiber optic temperature measurement and control system for high RF environments. 
  • 2014 - Watlow introduces the F4T process controller with touch-screen technology. 
  • 2015 - Watlow introduces Adaptive Thermal Systems ATS
  • 2015 - Watlow develops OPTIMAX, a next generation heat exchanger
  • 2015 - Watlow introduces ECO-HEAT, an exhaust gas aftertreatment thermal management system. 
  • 2016 - Watlow introduces FLUENT in-line heaters
  • 2016 - Watlow opens its Advanced Technology Center (ATC) in St. Louis, MO. And rebrands Watlow to the current day logo
  • 2017 - Watlow introduces WATCONNECT pre-engineered control panels. 
  • 2018 - Watlow acquires Yarbrough Solutions Worldwide of Austin, TX to serve the end user semiconductor market.  


  • 2021 - Watlow was acquired by the Tinicum investment group to propel the company into the next century of innovation. 
  • 2022 -  Watlow introduces POWERSAFE Medium Voltage fully integrated control and heating system.