KegMaster
™
Series 4 User Manual
Page 10 of 17
Keg King is a registered business name of MCH Australia Pty Ltd
Setting up Commercial Keg Couplers
The gas enters the side of the coupler at about a 30-degree angle and the beer exits the keg coupler out
the top of the keg coupler. For that reason, you will need to connect your gas line from your CO
2
regulator to the side of the keg coupler and the beer line from your tap to the top of the keg coupler.
Inside the keg coupler there may be two “one
‐
way” valves. The one
on the left is the one-way gas valve and the one on the right is the
one-way beer valve. On a kegerator system these valves are not
strictly necessary, and you do not know how to use them it is best to
just take them out of the coupler.
If using barb-tails (pictured right), the keg coupler should include a hex nut, barb-tail,
and rubber washer (as shown to the right).
Always ensure that the rubber washer is between the barb-tail and the coupler body.
Home Brewing Kegs
Home Brewing Kegs, such as those on the left are used by home brewers or small
microbreweries. The sizes are typically 19L or 9.5L.
These kegs have 2 separate posts: one for the gas line (usually marked “IN”), and on
e for the
beer line (usually marked “
OUT
”).
The posts are typically either
“Ball Lock” or “Pin Lock”. The differences
between these two
types are explained as follows.
Ball Lock
Originally used by Pepsi for pre-mix syrups, about 85% of
home brewers use this type of keg because they are easy
to use, have a high availability of spare parts and are
inexpensive.
The 2 posts on the kegs look very similar but are not
compatible. As you can see on the photo to the left the
gas post is slightly different shape to the liquid post. The
gas post has a small ground notch (see arrow) which
signifies the post is a gas post.
Similarly, the ball lock disconnects are also different from
each other.
The grey should only be used for gas and the black
should only be used for liquid.
Ball Lock Posts
(on the keg)
Ball Lock
Disconnects
Pin Lock
Originally used by Coca Cola for pre-mix syrups, about
10% of home brewers use this type of keg.
The 2 posts on the kegs look similar but are not
compatible. As you can see on the photo to the left the
gas post has 2 pins on opposite sides of the post, and the
liquid post has 3 pins equally spaced around the side of
the post.
Similarly, the ball lock disconnects are also different from
each other.
The disconnect with the grey base should only be used
for gas and the disconnect with the black base should
only be used for liquid.
Pin Lock Posts
(on the keg)
Pin Lock
Disconnects
