How much pressure will the Cryostop™ freeze plug hold?
• If this is so safe, why won’t Cryostop™ International Cryostop™ freeze plug over a joint weld or simple dent? • What aspect of Cryostop™ freeze plug makes pipe defects a concern? • So what are the mechanical hazards? • Why such an involved job procedure and rigorous safety monitoring? Why do accidentally frozen pipes break? Numerous scientific studies have proven that frozen pipes break when ice is uncontrollably formed inside the pipe near to a dead-end or closed valve. As the ice forms, it seals off the pipe I.D., and then expands longitudinally, along the center axis of the pipe, pushing on the trapped water. This push causes the pressure to rise in the entrapped unfrozen water area until it reaches a level that the pipe can no longer hold. The pipe then sometimes breaks. Highly involved testing has shown that radial expansion of the ice plug does not come close to exerting enough stress on normal piping systems to cause failure. So why won’t Cryostop International’s process cause
