Subscribe to the Viega Blog

How to Distinguish ProPress Copper Fittings

August 15, 2023 Viega
Share Article

Understanding how to identify and ask for Viega ProPress fittings is simple, with specific things to look for to ensure you're getting the highest quality Viega fittings.

Viega ProPress fittings are the #1 press fitting in the industry for a reason. When you’re looking to press ½″ to 4″ pipe, it’s a safe, clean, fast option. ProPress fittings are approved for water/liquids, fuels/oils/lubricants and gas applications. As one of the most widely installed fittings, ProPress sets the industry standard for high performance in a variety of jobsite conditions.

So, let’s break down a few ways you can tell the difference between ProPress and the competition.

  1. Smart Connect Technology

All Viega fittings come equipped with Smart Connect Technology, noted by a green dot and EPDM sealing element. This allows you to immediately pressure test on live systems, resulting in fewer leaks and maximum accuracy.

  1. EPDM and FKM Sealing Elements

    Viega ProPress fittings are manufactured with a high-quality, shiny black EPDM sealing element installed at the factory. EPDM (Ethylene Propylene Diene Monomer) is a synthetically manufactured and periodically cured all-purpose elastomer.

    The EPDM sealing element can be changed to a dull black FKM (Fluoroelastomer) sealing element. Engineered to last longer, EPDM and FKM sealing elements are crucial differentiators of Viega ProPress fittings.

  2. Physical Markers

Lastly, the most noticeable differences are the physical markers that signal a Viega fitting. As we mentioned earlier, each ProPress fitting is marked with a green dot that signals the EPDM sealing element and Smart Connect technology.

Viega ProPress fittings are also marked with the size of the fitting, manufacturer name, manufacturer batch code, CSA®, NSF®-61-372 and UPC.


When you’re at the checkout counter, just because you ask for ProPress fittings, doesn’t mean you’re getting it. Be sure to look out for these indicators and double-check with your distributor to make sure you’re getting the best quality fittings.

Want to learn more about the benefits of Viega ProPress? Visit

Subscribe to
the Viega Blog

Subscribe to the Viega Blog


Project Profiles

Find out how Viega is helping bring innovative projects to life—from the residential and commercial space to industrial and marine. Learn More