Details

FL (inch) & MFL (metric) Series Flange Disc Springs are elastic mechanical elements designed primarily for pipe flange applications. When used in bolt joints that are subject to thermal or mechanical shock, they deflect and move with the bolted joint. Hence, they compensate for developed looseness. The reactive power of the flange disc spring serves to keep the bolt joint tight under all conditions. Principal applications include piping construction, compression joints, steam piping joints, valve and pump connections, and others in the petrochemical field. Abnormally high loads, produced by thermal expansion and contraction of a bolted joint, are a principle cause of flange leakage. Generally, flanges are under static load conditions. However, in large piping systems there may also be mechanical shock from compressor related piping. Thermal and mechanical shock differential can cause variation and yielding in bolt loads. To protect against these conditions, always use flange spring discs under the nut or bolt head. Pre-stressing or torquing the bolt at factory installation is not sufficient to protect the flange joint under unexpected temperature variations and mechanical shock loads in the field. Flange spring discs absorb peak stresses, therefore preventing damage to the bolt, gasket, and joint.

Additional Information

Manufacturer: Century Spring Corp.

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