Apparatus for venting and/or degassing a pipeline system

Apparatus for venting and/or degassing such as the absorption degassing of a pipeline system including a liquid circuit, in particular a water circuit, comprising an upwardly extending casing having an upper end and a lower end, a valve mounted in said casing adjacent the upper end thereof with said valve communicating between the interior and exterior of said casing, a valve needle mounted in said valve and extending into said casing adjacent the upper end thereof, said valve needle extending transversely of the upward direction of said casing, an upwardly extending float needle located within said casing and disposed in contacting engagement with said valve needle, a float suspended on and movable in the upward direction on said float needle, wherein the improvement comprises that said casing comprises an upwardly extending top part forming the upper end of said casing and a bottom part extending downwardly from the lower end of said top part, said top part containing said valve float needle and float, a cap extending transversely of the upward direction of said casing in the region of the lower end of said top part, said cap having at least one opening therethrough affording communication between the interior of said bottom part and top part, said float needle extending upwardly from the region of said cap to said valve needle, and said top part and float needle being dimensioned so that said float moves upwardly and downwardly freely on said float needle from the region of said cap toward said valve needle so that during a pressure increase within said casing up to a predetermined value an accurate safety distance is maintained between the liquid surface in said casing and said valve, and said valve having a labyrinth outlet port for preventing valve damage or contamination from the exterior of said casing.