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Limit Rods
 

It is sometimes desirable to limit the axial expansion or compression of the expansion joint. Limit rods, shown above, provide freedom of movement over a range determined by the location of nut stops along the rods. In the event of a main anchor failure, limit rods are designed to prevent bellows over-extension while restraining the full pressure thrust of the system. This device prevents damage to the expansion joint.

 
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U.S. Bellows, Inc. Designed and Fabricated 50 Universal Expansion Joints for an Air Force Base in New Mexico (Ref#91376-A1, EA) 11/14/2007
U.S. Bellows, Inc. fabricated 50 expansion joints from 304L stainless steel. The expansion joints were 6" and 8" sizes. The 6" expansion joints are 24" face to face and the 8" expansion joints are 26" face to face. All of the expansion joints are fabricated with liners that are also made with 304L stainless steel. The design temperature was 200°F and the design pressure was 200 PSIG. The expansion joints were dye-penetrant tested and hydro tested at 300 PSIG. U.S. Bellows, Inc. provides 100% customer satisfaction in terms of quality and delivery.

 

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