| CPC F16L 55/1018 (2013.01) [F16K 1/24 (2013.01); F16K 27/12 (2013.01); F16L 55/115 (2013.01); F16L 55/1157 (2013.01)] | 13 Claims |

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1. A closure assembly for a fluid port having a fluid flow channel defined along an axis, the channel ending in a port opening, the closure assembly comprising:
a closure cap extending in a first plane arranged to seat across, and close the port opening, in use, in a closed state,
a guide arm extending from the cap in a second plane substantially perpendicular to the first plane;
a lifting guide to accommodate and retain the guide arm for movement of the guide arm in the second plane as the cap moves axially away from the opening; and
a pivot mechanism between the guide arm and the lifting guide about which the cap is able to pivot relative to the lifting guide to an open position;
wherein the lifting guide defines a receptacle to receive the guide arm such that the guide arm can move in and axially relative to the lifting guide.
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