Question:

Which of the following metals is generally used for fabricating homogenizer value ?

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Stellite alloys are widely used in extreme wear environments, such as cutting tools, valve seats, and homogenizer valves, where standard stainless steel would erode rapidly.
  • Stainless steel
  • High carbon steel
  • Stellite
  • Nichrome steel
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The Correct Option is C

Solution and Explanation

Step 1: Understanding the Concept:
Homogenizer valves are subjected to extreme operational stresses, including high fluid velocity, shear forces, impingement, cavitation, and erosion.
The material used for the valve must have exceptional wear resistance and hardness.

Step 2: Detailed Explanation:

While the body of a homogenizer is typically constructed from high-grade stainless steel for sanitary purposes, the valve assembly requires a much harder, wear-resistant material.
Stellite is a range of cobalt-chromium alloys designed for outstanding wear resistance, hardness, and corrosion resistance at high temperatures.
It is highly resistant to the severe erosion and cavitation damage that occurs inside a homogenizer valve during high-pressure processing.
Therefore, Stellite is the preferred material for fabricating homogenizer valves.

Step 3: Final Answer:

The material generally used for fabricating homogenizer valves is Stellite.
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