... , folding Angle valves. This is because pipeline in a 90 degree Angle valve in the corner of the shape, so called Angle valves, Angle ... use fixed number of yearRed rushed and the press in 10 years of above, the FanSha 5 to 8 years of alloy 3 years ... very brittle, might break to the pipeline and can't be replaced, copper is easier to change.How to calculate the triangle valve usageThe toilet one ...