| http://www.w3.org/ns/prov#value | - However,advantageously, and unlike traditional locking quick-connect couplings, the fittings 452 and 454 can be detached from one another, without manipulating a pin, collar, or other locking element, simply by applying a sufficient separation force to thefittings 452 and 454 to overcome the retention forces imposed by the O-ring 550.The O-ring 550 comprises a co
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