B&D Mfg., Inc. geothermal blog cover showing non-pressurized flow centers, GT Flow Center, QT Flow Center, and geothermal system components.
Who Invented the Non-Pressurized Flow Center? The Dallas Warnke Story

Who Invented the Non-Pressurized Flow Center? The Dallas Warnke Story

How Dallas Warnke founded B&D Mfg. in 1992 and invented the non-pressurized flow center, helping change geothermal system design.

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