Watlow® Flange Heaters Comply with ASME's Revised Section IV Requirements

Watlow®, an industry leader in the design and manufacture of complete thermal systems, announced that it recently received a Certificate of Conformance from the American Society of Mechanical Engineers (ASME) designating that its flange heaters meet the Boiler and Pressure Vessel Code (BPVC), Section IV revised requirements, and can apply the H stamp to its flange heater assemblies.

Recently, the ASME revised its BPVC, Section IV, Rules for the Construction of Heating Boilers, requirements for boilers, including commercial boilers, industrial boilers, heating boilers and low pressure boilers. Boilers in which steam or other vapor is generated at pressures not exceeding 15 psig, and high temperature water boilers intended for operation at pressures not exceeding 160 psig and/or temperatures exceeding 250°F now require heaters from suppliers that are certified.

Watlows compliance with ASMEs recent Section IV revised requirements confirms our commitment to safety, said Bob Moore, Watlows director of product management. Our team works closely with The National Board of Boiler and Pressure Vessel Inspectors to ensure our products are designed and produced to the agencys strict specifications, assuring the best possible solution for our customers.

Watlows ASME certified flange heaters have long immersed length capability to help reduce costs by keeping the pipe and flange sizes to the smallest possible design size. This product is available with a variety of heating elements and flange materials (including square flanges) to meet specific requirements, and eyebolt holes or lift lugs are drilled and tapped to facilitate lifting for large units into the vessel.

Typical applications include boilers, high temperature water boilers and steam generators.

About Watlow

Watlow designs and manufactures industrial heaters, temperature sensors, controllers and supporting software  all of the components of a thermal system. The company partners with its customers to optimize thermal performance, decrease design time and improve efficiency of their products and applications.

Watlow brings its experience to numerous industries, including semiconductor processing, environmental chambers, energy processes, diesel emissions, medical and foodservice equipment.

Since 1922, Watlow has grown in product capability, market experience and global reach. The company holds more than 450 patents and employs 2,000 employees working in nine manufacturing facilities and three technology centers in the United States, Mexico, Europe and Asia. Watlow also has sales offices in 16 countries around the world. The company continues to grow, while the commitment remains the same to provide its customers with superior products and services for their individual needs.

For additional information call your nearest Watlow representative:


Phone: 1+ (800) WATLOW2, 1+ (314) 878-4600

Fax: 1+ (877) 893-1005, 1+ (314) 878-6814

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