Fluid housing of a fluid treatment system and fluid treatment system

A fluid housing of a fluid treatment system of a fluid system, the fluid housing comprising:

• at least one housing part of plastic material, wherein the at least one housing part comprises:
• at least one receiving chamber arranged in an interior of the at least one housing part and configured to accommodate at least one fluid treatment component for treating a fluid;
• at least one installation opening, closable by a closure housing part, enabling installation of the at least one fluid treatment component in the at least one receiving chamber;
• and
• wherein the at least one housing part has at least one housing connecting section surrounding the installation opening of the at least one housing part and configured to connect the at least one housing part to the closure housing part;
• at least one housing fastening section forming a connecting flange protruding radially outwardly from an outer side of the at least one housing part and configured to fasten the fluid housing to a holding component of the fluid system;
• at least one insert comprising metal and/or a composite material, the at least one insert at least partially embedded into the plastic material of the at least one housing connecting section of the at least one housing part, wherein the at least one insert comprises:
• at least one annular reinforcement region of the at least one insert is embedded into the plastic material of the at least one housing connecting section such the plastic material is arranged on both radially outer and radially inner sides of the annular reinforcement region of the at least one insert;
• and
• wherein the at least one insert comprises at least one fastening leg connected at a first end to the at least one annular reinforcement region of the at least one insert, the at least one fastening leg embedded, at least in sections, into plastic material of the connecting flange of the at least one housing fastening section.