Recently,The steel flanges leakage has troubled many users. To offer better piping engineering service, we concluded the seven causes for pipe flange leakage. In this paper, the author would like make a brief introduction to the seven causes for the pipe flange leakage.
Seven Causes for the Pipe Flange Leakage:
1.Pipe and flange are out of the vertical, and in different cardiac, flange face is unparalleled. When interior medium pressure exceed gasket loading pressure, the steel flange will leak. This may caused by incorrect installation or maintenance, and it’s easy to be found. Just checking the steel flanges carefully.
2.Pipe are vertical with steel flange, but the two flanges are in different cardiac. This cause bolts can’t freely fit in the bolt holes. A simple way is broaching or changing a smaller bolt, but this method would lower the tightening force of pipe flanges.
3.Excessive steel flange gap. This may cause external load such as axial or bending load, gasket will lose pressing force by shock, gradually lack of sealing property and leak medium.
4.Pipe and steel flange are in the same cardiac, but bolt hole distance error between flange and flange is too large. This will cause stress, and the stress won’t disappear, shear force on bolt for a long time, and the shear force will cut off the bolt.
5.Stress influence. Under correct pipe flange installation, medium go through the pipe may cause temperature change within pipe, and this lead to pipe expansion or deformation.
6.Corrosion. Long-time corrosion to the gasket may do harm to the steel flange. Corrosive medium permeate to the gasket, gasket become soft and lose the pressing force, as well as causing the flange leakage.
7.Thermal expansion. Thermal expansion may cause the expansion or shrinkage to bolts, then gasket has gaps, and the pipe flange will has leakage.
The above mentioned text is the brief introduction to the seven causes for the pipe flange leakage. If you want o know more about this topic, please contact with us as soon as possible. Henan Lanphan is a qualified company, which boasts a fine reputation in the market both home and abroad. We are willing to provide with you more information. Please contact with the [email protected]