STRATUS Multi-Deck Display Case
15
Coupling Description
The following pages show the stages of coupling assembly as the swivel nut
and male fitting are drawn together.
The swivel nut end contains one diaphragm in the center post. The male
fitting contains the knife blades and its own diaphragm.
NOTE: 3/8 male ends have one knife blade.
No sealing takes place until the final stage, when the outer edge of the
center post in the swivel nut is forced against the bottom of the male fitting,
creating a mechanical seal.
Below appears to be a completed assembly with only two threads showing, but the diaphragms have just begun to
be pierced. This causes severe operational issues as well as refrigerant leaks.
Two Threads Showing
Knives Just Showing
Barely Pierced
Below shows an even more complete assembly, with only one thread showing. However, this assembly is still not
complete. If not tightened further, there will be refrigeration restrictions and leaks.
One Thread Showing
Knives Exposed
Partly Pierced
Rotate Swivel Nut 1/4 Turn More