Sealed connection for fluid conduit parts

An assembly of fluid conduit parts having a sealed connection between the fluid conduit parts comprising:

• a blow molded part having a first portion;
• a second part including an outer section;
• a sealing flange extending from a first end of the first portion towards a central axis of the first portion at a distance, an end of said sealing flange defining an opening;
• said second part adapted to insert into the opening and at least part of a tapered section of the second part has a size larger than the opening;
• said sealing flange flexing upon insertion of said second part into said opening to define a contact surface between the outer section and the sealing flange such that the contact surface extends around a perimeter of the outer section where the sealing flange contacts the outer section;
• and
• a lock holding the blow molded part in place when a fluid is introduced into the blow molded part such that a pressure of the fluid presses against and the fluid directly contacts an inner surface of said sealing flange to thereby increase a sealing pressure between the contact surface and the outer section;
• a channel located between the first end of said first portion and another end of the blow molded part;
• a protrusion located on the second part and sized to fit in said channel such that the protrusion can move from a first position towards a second position, where the first position is closer to the end than the second position.

An assembly of fluid conduit parts having a sealed connection between the fluid conduit parts comprising:

• a blow molded part having a first portion;
• a second part including an outer section;
• a sealing flange extending from the first portion towards a central axis of the first portion at a distance, an end of said sealing flange defining an opening;
• said second part adapted to insert into the opening and at least part of a tapered section of the second part has a size larger than the opening;
• said sealing flange flexing upon insertion of said second part into said opening to define a contact surface between the outer section and the sealing flange such that the contact surface extends around a perimeter of the outer section where the sealing flange contacts the outer section;
• a channel located between a first end of said first portion and another end of the blow molded part;
• a protrusion located on the second part and sized to fit in said channel such that the protrusion can move from a first position towards a second position, where the first position is closer to the end than the second position;
• a catch located at an end of said channel such that when said protrusion is located at the second position, the blow molded part can be rotated relative to the second part to engage the protrusion against said catch;
• and
• a notch defined by said catch, said notch located between two peaks formed in the blow molded part such that upon rotation of blow molded part said protrusion presses against one of said two peaks to thereby allow the protrusion to advance past the one of said two peaks such that the protrusion is located within said notch.