The Best Coupling HD Series has been engineered by an international team of plumbing experts. Best Coupling has built a heavy-duty, all stainless-steel coupling that gives the commercial trade a superior coupling that provides an incredibly rigid joint with added positive sealing. The coupling has been manufactured with a heavy-duty shield (.012 which is beyond current HD shield thickness requirement) and additional sealing clamps that result in a rigid, water-tight joint.
For job bids and engineers. Technical specifications for the Best Coupling