CPC F16K 41/02 (2013.01) [F16J 15/3284 (2013.01)] | 24 Claims |
1. A packing ring for a fluid valve comprising:
a top layer and a bottom layer, both the top layer and the bottom layer comprising a flexible graphite material; and
one or more mid-layers comprising the flexible graphite material or a perfluoroalkoxy alkane (PFA) material;
wherein the one or more mid-layers are disposed between the top layer and the bottom layer;
wherein respective one or more mid-layers are disposed parallel to an adjoining layer;
wherein the plurality of mid-layers, top layer, and bottom layer are bonded together forming a cylindrical shape; and
wherein the cylindrical shape comprises an open center, wherein the open center extends through the formed cylindrical shape, and has an axis perpendicular to the plurality of mid-layers, top layer, and bottom layer.
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