Adapter for connecting concentric heater exhaust and air supply pipes on inlet side to parallel exhaust and air supply pipes on outlet side is connected by bolt to hook passed through gap between concentric pipes

摘要

The adapter for connecting concentric heater exhaust (2) and air supply (3) pipes on the inlet side to parallel exhaust (4) and air supply (5) pipes on the outlet side is connected by a bolt (6) to a hook (7). This is passed through the annular gap (8) between the concentric pipes.