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Viega PEX Fittings Receive ASTM Certification

September 28, 2019

Viega LLC is proud to announce that fittings for its PureFlow®Press system have received ASTM International certification.

Viega’s fittings have always met ASTM standards, and listed its PureFlow Press fittings under the ASTM F877 standard, but the company now has pioneered a new standard for itsr PureFlow Press connections, ASTM F3347 and ASTM F3348. Viega then submitted its products to NSF International in order to receive the official certifications, said Seth Larson, products manager, plastics, at Viega.

“Everyone in the field is familiar with the quality of Viega fittings, but the ASTM certifications provide an additional level of reassurance for contractors, as well as a standardized fitting that is easier for engineers to specify,” Larson said.

The specifications, published as ASTM F3347 (Zero Lead bronze press fittings with stainless steel press sleeves) and F3348 (plastic press insert fittings with stainless steel press sleeves), are for PEX tubes that distribute potable water and that support hydronic plumbing systems for homes and businesses.

About Viega

The Viega Group, with a tradition of innovation for 120 years, has more than 4,000 employees worldwide and is among the leading manufacturers of pipe fitting installation technology. In metal press systems for industrial, commercial and residential projects, the company is the global market leader. In the U.S., Viega LLC employs over 650 people and offers more than 3,000 products. These include Viega ProPress® for copper and stainless, Viega MegaPress® for carbon steel and stainless pipe, the Viega PureFlow® System including PEX and fittings in high-performance polymer and Zero Lead bronze, as well as MegaPress CuNi and SeaPress® systems for marine applications. Viega also specializes in the design, production and installation of radiant heating and cooling systems, and offers Viega Flushing System Technology including carriers and flush plates. For more information, visit