One of the more innovative products to emerge on the plumbing scene in the past 20 years or so (in my opinion) is the flexible supply connector. A lot of people have seen but probably not paid much attention to them under their sink or perhaps from the toilet supply valve to the toilet tank. Most have (more…)
Stress corrosion cracking involves the slow growth of small, often microscopic, cracks through a metal part in a corrosive environment. The cracking can continue to the point that the part fails suddenly and unexpectedly even though it still appears new and in good condition.
My first experience with stress corrosion cracking happened in the Charleston harbor when the stainless steel rudder suddenly separated from a sailboat during moderate winds. What had been a pleasant evening sail turned instantly into being in a difficult to control boat in the middle of the busy shipping channel. The rudder remained attached only (more…)
Graphitic corrosion is a process that may happen in equipment made of iron, particularly grey cast iron, but also ductile cast iron. Graphitic corrosion can lead to unexpected catastrophic failure of the affected part because the cast iron can lose its strength without a visible warning such as a change in size, shape, or appearance. (more…)
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