Plastic beer keg

A plastic beer keg including:

• a container having an outer wall to at least partially define a container interior;
• a lid secured to the outer wall of the container, the lid having an opening;
• a liner including a neck portion and a body portion, the body portion of the liner in the container interior, the neck portion at least partially disposed outward of the opening through the lid;
• a valve at least partially disposed within the neck portion of the liner;
• a locking ring non-removably connected to the liner to secure the lid to the liner, the locking ring having internal threads;
• and
• a retainer connected to the neck portion of the liner, the locking ring non-removably secured directly to the retainer, wherein the internal threads of the locking ring are secured to external threads of the retainer, the internal threads of the locking ring and the external threads of the retainer including a ratcheting mechanism permitting attachment of the locking ring to the retainer and inhibiting removal of the locking ring from the retainer, wherein the retainer and the neck portion each include threads and wherein the threads on at least one of the retainer and the neck portion includes gaps for controllably releasing pressure in the liner.

A plastic beer keg including:

• a container having an outer wall to at least partially define a container interior;
• a lid secured to the outer wall of the container, the lid having an opening;
• a liner including a neck portion and a body portion, the body portion in the container and an uppermost surface of the neck portion above the lid proximate the opening of the lid;
• a retainer threadably secured to the neck portion of the liner and aligned with the opening in the lid, wherein threads on at least one of the retainer and the neck portion includes gaps for controllably releasing pressure in the liner;
• and
• a locking ring non-removably securable to the retainer, the locking ring contacting the lid, wherein rotation of the locking ring imparts relative rotation between the retainer and neck portion and releases pressure in the liner via the gaps.