<p>The arrangement has a melt flow-path (82) for filling a coupling housing, and provided with a closure (132). The closure is provided for releasing the flow path during an operating condition by opening the closure. The closure enables a delayed lowering of internal pressure and a filling volume on the coupling housing after the operating condition by closing the closure. The closure is formed by a valve device i.e. throttle check valve, arranged within a flow passage (55).</p>
