Patent ID: 6488318
Filing Date: 2002-12-03
Classification: F16L

Abstract:
A piping joint comprising a joint body having a connecting portion where a pipe end is inserted, comprising a bush screwed inside the connecting portion and a first packing ring inserted therein, characterized in that:the connecting portion includes a first cylindrical opening having a first diameter where the pipe end is inserted, a second cylindrical opening having a second diameter where the first packing ring is inserted and a third cylindrical opening of third diameter, the first diameter being greater than the second diameter and the second diameter being greater than the third diameter; a second packing ring is inserted in the third opening, the third opening has a female thread, and a bush is inserted in the third opening between the female thread and the second packing ring for compressing the second packing ring; there is a wall between the second and third openings, one end of the second packing ring contacts the first packing ring, and the first packing ring includes an abutment which presses against the wall to prevent the second packing ring from overinsertion; the bush has a first slanted edge, and the second packing ring has a tapered portion, one side of which contacts the slanted edge of the bush and the other side of which has a projection for compressing the pipe, and the bush has a male thread and several slots along its length to facilitate connection with the connecting portion.