· The Morgui circular acoustic silencer have been designed with an exterior helical tube and one interior tube made out of a perforated steel sheet. 
· The separation between the tubes is filled with mineral acoustic wool. There is a polyester fabric between the perforated steel sheet and the insulating material to avoid that the mineral wool will be dragged by the air flow. 
· The circular noise muzzle is supplied as a standard form with SPIRE ® system and standard measures of 300, 600, 900, 1.200 and 1.500 mm, depending on the diameter of connection.

Models:
· Circular noise muzzle SLU: 50 mm insulation.
· Circular noise muzzle SLGU: 10 0mm insulation.
· Circular noise muzzle SLBGU: central core and 100 mm insulation.

Technical Data Sheet