Abstract: A sound attenuator for a separator device for gas and a separator device are described. The sound attenuator comprises at least one tubular member having at least one gas inlet opening in the area of one end and at least one gas outlet opening in the area of the other end. The at least one gas outlet opening is placed in the circumferential wall of the at least one tubular member near the one end and the end face at this end of the at least one tubular member is closed by a closing part.

Abstract: A filter insert to be installed in a housing of a liquid separator has a hollow cylindrical separation element in the form of a coalescer for separating a liquid from a gas flow. A flange at an end face of the hollow cylindrical separation element can be arranged exchangeably between a cover and a cylindrical body of the housing. The flange has a support surface at a radially outer rim of the flange to be supported on an upper support region of the housing facing the cover of the housing. The flange has a guide structure determining a position of the flange on the upper support region of the housing. The guide structure is to receive a counter structure of the liquid separator. The guide structure has an axial elevation projecting away from the end face of the separation element. A liquid separator is provided with such a filter insert.

Abstract: A connection adapter for connecting a treatment apparatus to a connection head of a treatment device for a fluid is provided with a connecting section that connects to the connection head. A threaded socket section coaxial to an imaginary connecting axis is provided to screw on the treatment apparatus. The threaded socket section has at least one fluid passage channel connecting a fluid-conducting space of the treatment apparatus to a fluid-conducting space of the connection head. The connecting section has at least two screw holes for receiving screws or threaded bolts or the connecting section has a central thread that connects to a connection head-associated central thread. An assembly of connection head and connection adapter is provided. A treatment device provided with connection head and connection adapter is provided.

Abstract: A connection adapter for connecting a treatment apparatus to a connection head of a treatment device for a fluid is provided with a connecting section that connects to the connection head. A threaded socket section coaxial to an imaginary connecting axis is provided to screw on the treatment apparatus. The threaded socket section has at least one fluid passage channel connecting a fluid-conducting space of the treatment apparatus to a fluid-conducting space of the connection head. The connecting section has at least two screw holes for receiving screws or threaded bolts or the connecting section has a central thread that connects to a connection head-associated central thread. An assembly of connection head and connection adapter is provided. A treatment device provided with connection head and connection adapter is provided.