A containment vessel, comprising: a first chamber portion having a first chamber portion flange, wherein the first chamber portion flange includes a plurality of teeth, and wherein at least a subplurality of the plurality of first chamber portion teeth have first chamber portion teeth wedges attached thereto; a second chamber portion having a second chamber portion flange, wherein the second chamber portion flange includes a plurality of teeth, wherein at least a subplurality of the plurality of second chamber portion teeth have second chamber portion teeth wedges attached thereto; and a nut portion for wedgeably abutting the first chamber portion and the second chamber portion, the nut portion including a first plurality of teeth and a second plurality of teeth, characterised in that a first subplurality of the first plurality of nut portion teeth having a first nut teeth wedges attached thereto, and wherein a second subplurality of the second plurality of nut portion teeth have second nut teeth wedges attached thereto; wherein, the first plurality of nut portion teeth, the second plurality of nut portion teeth, the plurality of first chamber portion teeth, and the plurality of second chamber portion teeth are spaceably distributed, such that the plurality of first chamber portion teeth are able to pass between the first plurality of nut portion teeth, and such that the plurality of second chamber portion teeth are able to pass between the second plurality of nut portion teeth; and wherein the subplurality of first chamber portion teeth wedges, the subplurality of second chamber portion teeth wedges, the first plurality of nut portion teeth wedges, and the second plurality of nut portion teeth wedges are each situated and oriented so as to slidably engage, such that the first chamber portion and the second chamber portion are drawn together by directional motion of the nut portion relative to the first chamber portion and the second chamber portion. a first chamber portion having a first chamber portion flange, wherein the first chamber portion flange includes a plurality of teeth, and wherein at least a subplurality of the plurality of first chamber portion teeth have first chamber portion teeth wedges attached thereto; a second chamber portion having a second chamber portion flange, wherein the second chamber portion flange includes a plurality of teeth, wherein at least a subplurality of the plurality of second chamber portion teeth have second chamber portion teeth wedges attached thereto; and a nut portion for wedgeably abutting the first chamber portion and the second chamber portion, the nut portion including a first plurality of teeth and a second plurality of teeth, characterised in that a first subplurality of the first plurality of nut portion teeth having a first nut teeth wedges attached thereto, and wherein a second subplurality of the second plurality of nut portion teeth have second nut teeth wedges attached thereto; wherein, the first plurality of nut portion teeth, the second plurality of nut portion teeth, the plurality of first chamber portion teeth, and the plurality of second chamber portion teeth are spaceably distributed, such that the plurality of first chamber portion teeth are able to pass between the first plurality of nut portion teeth, and such that the plurality of second chamber portion teeth are able to pass between the second plurality of nut portion teeth; and wherein the subplurality of first chamber portion teeth wedges, the subplurality of second chamber portion teeth wedges, the first plurality of nut portion teeth wedges, and the second plurality of nut portion teeth wedges are each situated and oriented so as to slidably engage, such that the first chamber portion and the second chamber portion are drawn together by directional motion of the nut portion relative to the first chamber portion and the second chamber portion.