| 摘要 |
. A fluid coupling particularly suitable for use with pressurized systems such as refrigeration circuits wherein the coupling parts may be quickly interconnected solely by axial insertion of the male part into the female part. Yet separation of the parts is controlled by a threaded nut. An annular radially expandable and contractible retainer ring is axially positioned relative to the female part by a nut threaded on the female part and the male part includes an annular shoulder which radially expands the retainer during insertion into the female part. Upon complete insertion of the male part the retainer engages the shoulder and prevents withdrawal of the male part due to abutment of the retainer against the nut. The nut includes a retainer engaging surface for reinforcing the retainer configuration, while in another embodiment the nut aids in withdrawing the male part from the female part during uncoupling.
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