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Quick industry note on waterworks flanges.

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The American Water Works Association has suspended the utilization of “hub” type flanges in their C207 and associated specifications. All flanges per AWWA specs are either “ring” type slip on flanges or “blind” type flanges. The aforementioned “hub” type flanges as outlined in AWWA C207 Class D and C207 Class E are derived from ASME specifications 125# Lightweight and 125# Slip On, respectively. We will still provide flanges as dual certified to both of these specifications, with the understanding that they will not be manufactured and stamped per the latest update of the AWWA standard.

 

 

As is standard from Texas Flange, you may request these flanges in any commercially available material grade you require. The most common are still carbon flanges, mild steel flanges and stainless steel flange variants. Please be advised that while many of these items are available in stock in carbon steel grades, most stainless, chrome, and nickel alloy type flanges are made to order, given the popularity of carbon steel flanges for the majority of water works flange and piping projects. Their lower pressure requirements and ambient temperature operation typically mean a more exotic alloy flange is not required. Any questions or concerns, please feel free to contact any of our trained sales staff here at Texas Flange.

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