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Expansion Springs / Breather Spring
MPI Expansion Springs 4" are stainless steel Type 304 flat expansion springs used to secure insulation over small diameter insulated piping, tanks, vessels, and equipment subject to expansion and contraction. They can be used with any common width of strapping up to 3/4"
APPLICATION
CHIL-SPRING /Expansion springs are simply attached to strapping with stainless steel wing seals. The strapping is slipped through the seal and then through the spaced opening at either end of the CHIL-SPRING. The strapping is then bent back and the wings of the seal are flattened. Strapping is then extended completely around the insulated object, or to the next spring, and the same routine is repeated until the entire circumference has been encircled. Maximum expansion of the 4" spring should not exceed 2-1/2" beyond its original length; it is recommended that each spring be stretched 1/2" upon installation. This allows an additional 2" expansion capability per spring. The number and size of CHIL-SPRING / Expansion springs to be used should have an Expansion capability of at least twice that of the expected expansion of the object. Extreme care should be taken to assure that stresses are evenly distributed around the insulation