pvc-coupling

6 лет назад

This video explains the history and use of no-hub couplings, also known as furnco couplings. The speaker discusses how these couplings were invented in the 1960s and became widely used in the late 1970s, replacing the labor-intensive method of joining cast iron pipes with oakum and lead. The video also explains how no-hub couplings work and their applications in various plumbing scenarios.