Abstract: A kit is described for use in freezing liquid within a first pipe of a given first diameter and a second pipe of a given second diameter less than the given first diameter. The kit includes a multi-section refrigerant chamber adapted for attachment around a pipe, the chamber having end mounting walls with openings having a diameter greater than the first given diameter; a pair of first adapter plates attachable to the outer faces of the end walls of the chamber sections, the first adapter plates having central pipe receiving openings with a diameter equal to the first given diameter; and a pair of second adapter plates attachable to the outer faces of the end walls of the chamber sections, the second adapter plates having central pipe receiving opening with a diameter equal to the second given diameter. A compressible gasket can be inserted between the chamber sections.

Abstract: A kit is described for use in freezing liquid within a first pipe of a given first diameter and a second pipe of a given second diameter less than the given first diameter. The kit includes a multi-section refrigerant chamber adapted for attachment around a pipe, the chamber having end mounting walls with openings having a diameter greater than the first given diameter; a pair of first adapter plates attachable to the outer faces of the end walls of the chamber sections, the first adapter plates having central pipe receiving openings with a diameter equal to the first given diameter; and a pair of second adapter plates attachable to the outer faces of the end walls of the chamber sections, the second adapter plates having central pipe receiving opening with a diameter equal to the second given diameter. A compressible gasket can be inserted between the chamber sections.